Works (89)

Updated: April 4th, 2024 02:26

2024 journal article

Hybrid Laser Cavity Design for Improved Photon Lifetime and Performance

IEEE PHOTONICS TECHNOLOGY LETTERS, 36(7), 516–519.

By: Y. Mehta n, K. Chien*, L. Lei n, K. Gundogdu n, C. Chang* & F. So n

author keywords: Silver; Mirrors; Reflectivity; Perovskites; Lasers; Optical feedback; Optical films; Metal halide perovskites; amplified spontaneous emission (ASE); cavity photon lifetime
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: March 25, 2024

2023 article

Coherent Phonon-Induced Modulation of Charge Transfer in 2D Hybrid Perovskites

Seyitliyev, D., Qin, Xixi, Jana, M. K., Janke, S. M., Zhong, X., You, W., … Gundogdu, K. (2023, March 31). ADVANCED FUNCTIONAL MATERIALS, Vol. 3.

author keywords: coherent phonons; charge transfer; hybrid perovskites; density functional theory
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
13. Climate Action (Web of Science)
Sources: ORCID, Web Of Science, NC State University Libraries
Added: April 1, 2023

2023 journal article

High-Efficiency Linearly Polarized Organic Light-Emitting Diodes

ACS PHOTONICS, 10(9), 3342–3349.

By: Q. Dong n, L. Zhu n, S. Yin n, L. Lei n, K. Gundogdu n & F. So n

author keywords: organic light-emitting diodes; polarized emission; diffractive grating; Bragg diffraction
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: October 16, 2023

2023 article

Metal-Halide Perovskite Lasers: Cavity Formation and Emission Characteristics

Moon, J., Mehta, Y., Gundogdu, K., So, F., & Gu, Q. (2023, July 25). ADVANCED MATERIALS, Vol. 7.

By: J. Moon*, Y. Mehta n, K. Gundogdu n, F. So n & Q. Gu n

author keywords: emission mechanisms in perovskites; metal-halide perovskites; patterning of perovskite cavities; perovskite lasers
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: August 7, 2023

2023 journal article

Sustainable materials acceleration platform reveals stable and efficient wide-bandgap metal halide perovskite alloys

MATTER, 6(9), 2963–2986.

By: T. Wang n, R. Li*, H. Ardekani n, L. Serrano-Lujan*, J. Wang n, M. Ramezani n, R. Wilmington n, M. Chauhan n ...

UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: October 10, 2023

2022 journal article

Author Correction: Room-temperature superfluorescence in hybrid perovskites and its origins

Nature Photonics, 4.

By: M. Biliroglu n, G. Findik n, J. Mendes n, D. Seyitliyev n, L. Lei n, Q. Dong n, Y. Mehta n, V. Temnov*, F. So n, K. Gundogdu n

Source: ORCID
Added: April 21, 2022

2022 journal article

Cavity Engineering of Perovskite Distributed Feedback Lasers

ACS Photonics, 9(9), 3124–3133.

By: Q. Dong n, X. Fu n, D. Seyitliyev n, K. Darabi n, J. Mendes n, L. Lei n, Y. Chen*, C. Chang* ...

author keywords: perovskite lasers; distributed feedback lasers; cavity fabrication; cavity engineering
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries, ORCID, Crossref
Added: August 19, 2022

2022 article

Importance of Electric-Field-Independent Mobilities in Thick-Film Organic Solar Cells

Ho, C. H. Y., Pei, Y., Qin, Y., Zhang, C., Peng, Z., Angunawela, I., … So, F. (2022, October 11). ACS APPLIED MATERIALS & INTERFACES, Vol. 10.

By: C. Ho n, Y. Pei n, Y. Qin n, C. Zhang*, Z. Peng n, I. Angunawela n, A. Jones*, H. Yin* ...

Contributors: C. Ho n

author keywords: organic photovoltaic; fill factor; thick film; mobility; field dependence; electric field
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: October 23, 2022

2022 journal article

Room-temperature superfluorescence in hybrid perovskites and its origins

NATURE PHOTONICS, 16(4), 324-+.

By: M. Biliroglu n, G. Findik n, J. Mendes n, D. Seyitliyev n, L. Lei n, Q. Dong n, Y. Mehta n, V. Temnov*, F. So n, K. Gundogdu n

Sources: ORCID, Web Of Science, NC State University Libraries
Added: April 14, 2022

2022 article

Spintronic Terahertz Emission in Ultrawide Bandgap Semiconductor/Ferromagnet Heterostructures

Comstock, A., Biliroglu, M., Seyitliyev, D., McConnell, A., Vetter, E., Reddy, P., … Sun, D. (2022, October 31). ADVANCED OPTICAL MATERIALS, Vol. 10.

By: A. Comstock n, M. Biliroglu n, D. Seyitliyev n, A. McConnell n, E. Vetter n, P. Reddy*, R. Kirste*, D. Szymanski* ...

author keywords: spintronics; terahertz; two-dimensional electron gas; ultrawide bandgap semiconductors
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: November 14, 2022

2021 journal article

Broadband micro-transient absorption spectroscopy enabled by improved lock-in amplification

REVIEW OF SCIENTIFIC INSTRUMENTS, 92(10).

By: H. Ardekani n, R. Wilmington n, M. Vutukuru*, Z. Chen*, R. Brandt*, A. Swan*, K. Gundogdu n

TL;DR: This work presents an affordable and easy-to-implement solution to expand the maximum sensitivity of lock-in detection systems used in transient absorption spectroscopy by multiple orders of magnitude by implementation of a tuned RC circuit to the output of an avalanche photodiode. (via Semantic Scholar)
Sources: ORCID, Web Of Science, NC State University Libraries
Added: October 10, 2021

2021 journal article

Enhanced Dielectric Screening and Photoluminescence from Nanopillar-Strained MoS2 Nanosheets: Implications for Strain Funneling in Optoelectronic Applications

ACS APPLIED NANO MATERIALS, 4(8), 8101–8107.

author keywords: mulitlayer molybdenum disulfide; nonlocal strain engineering; exciton funneling; PL enhancement; charge and exciton screening
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: ORCID, Web Of Science, NC State University Libraries
Added: August 4, 2021

2021 journal article

Fermi liquid theory sheds light on hot electron-hole liquid in 1L-MoS2

PHYSICAL REVIEW B, 103(7).

By: R. Wilmington n, H. Ardekani n, A. Rustagi n, A. Bataller n, A. Kemper n, R. Younts*, K. Gundogdu n

Sources: ORCID, Web Of Science, NC State University Libraries
Added: February 12, 2021

2021 journal article

High-temperature superfluorescence in methyl ammonium lead iodide

Nature Photonics, 15(9), 676–680.

By: G. Findik n, M. Biliroglu n, D. Seyitliyev n, J. Mendes n, A. Barrette n, H. Ardekani n, L. Lei n, Q. Dong n, F. So n, K. Gundogdu n

Sources: ORCID, Web Of Science, NC State University Libraries, Crossref
Added: June 22, 2021

2021 review

Metal Halide Perovskites for Laser Applications

[Review of ]. ADVANCED FUNCTIONAL MATERIALS, 31(16).

By: L. Lei n, Q. Dong n, K. Gundogdu n & F. So n

author keywords: amplified spontaneous emission; electron– phonon coupling; halide perovskites; lasers; quasi‐ 2D perovskites
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: March 8, 2021

2021 journal article

Timescales of excited state relaxation in alpha-RuCl3 observed by time-resolved two-photon photoemission spectroscopy

PHYSICAL REVIEW B, 103(24).

By: D. Nevola n, A. Bataller n, A. Kumar n, S. Sridhar n, J. Frick n, S. O'Donnell n, H. Ade n, P. Maggard n ...

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: June 2, 2021

2021 article

Ultra-High Alignment of Polymer Semiconductor Blends Enabling Photodetectors with Exceptional Polarization Sensitivity

Schrickx, H. M., Sen, P., Booth, R. E., Altaqui, A., Burleson, J., Rech, J. J., … Brendan T. O'Connor. (2021, October 7). ADVANCED FUNCTIONAL MATERIALS, Vol. 10.

By: H. Schrickx n, P. Sen n, R. Booth n, A. Altaqui n, J. Burleson n, J. Rech*, J. Lee*, M. Biliroglu n ...

author keywords: all-polymer bulk heterojunctions; organic photodetectors; polarization detection; polymer alignment
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: October 18, 2021

2020 journal article

Critical Role of Polymer Aggregation and Miscibility in Nonfullerene-Based Organic Photovoltaics

ADVANCED ENERGY MATERIALS, 10(8).

By: X. Yi n, Z. Peng n, B. Xu*, D. Seyitliyev n, C. Ho n, E. Danilov n, T. Kim n, J. Reynolds* ...

author keywords: charge generation; charge transport; morphology; nonfullerene acceptors; polymer aggregation
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: February 10, 2020

2020 journal article

Efficient Energy Funneling in Quasi-2D Perovskites: From Light Emission to Lasing

ADVANCED MATERIALS, 32(16).

By: L. Lei n, D. Seyitliyev n, S. Stuard n, J. Mendes n, Q. Dong n, X. Fu n, Y. Chen n, S. He n ...

author keywords: amplified spontaneous emission; distributed-feedback lasers; energy funneling; light-emitting diodes; quasi-2D perovskites
TL;DR: The results show that it is important to control the morphology of the quasi-2D films to achieve efficient energy transfer, which is a critical requirement for light-emitting devices. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: March 16, 2020

2020 journal article

Multi-mode Organic Light-Emitting Diode to Suppress the Viewing Angle Dependence

ACS APPLIED MATERIALS & INTERFACES, 12(28), 31667–31676.

By: C. Dong n, X. Fu n, L. Cao*, S. Amoah n, K. Gundogdu n, J. Li*, F. So n

author keywords: white OLED; top-emitting OLED; cavity effect; multiple cavity modes; angular color shift
TL;DR: A multi-mode OLED structure having dual-dielectric spacer layers, which completely eliminates the intrinsic cavity effect caused by the top and bottom boundaries respectively and provides freedom for the organic layer thickness. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: August 10, 2020

2020 journal article

Thermodynamic Properties and Molecular Packing Explain Performance and Processing Procedures of Three D18:NFA Organic Solar Cells

ADVANCED MATERIALS, 32(49).

By: Z. Wang, Z. Peng n, Z. Xiao*, D. Seyitliyev n, K. Gundogdu n, L. Ding*, H. Ade n

author keywords: chain extension; molecular packing; polymer solar cells; processing procedures; thermodynamic properties
TL;DR: This work reveals several unique property-performance relations of D18-based photovoltaic devices and helps guide design or fabrication of yet higher efficiency OSCs. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: November 24, 2020

2020 journal article

Towards radiation detection using Cs2AgBiBr6 double perovskite single crystals

Materials Letters, 269, 127667.

By: Z. Zhang n, C. Chung n, Z. Huang n, E. Vetter n, D. Seyitliyev n, D. Sun n, K. Gundogdu n, F. Castellano n, E. Danilov n, G. Yang n

Contributors: Z. Zhang n, C. Chung n, Z. Huang n, E. Vetter n, D. Seyitliyev n, D. Sun n, K. Gundogdu n, F. Castellano n, E. Danilov n, G. Yang n

author keywords: Double perovskite; Bandgap energy; Space charge limited current; Mobility-lifetime product; Radiation detector
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries, ORCID, Crossref
Added: April 20, 2020

2020 journal article

Understanding the Role of Ion Migration in the Operation of Perovskite Light-Emitting Diodes by Transient Measurements

ACS APPLIED MATERIALS & INTERFACES, 12(43), 48845–48853.

By: Q. Dong n, J. Mendes n, L. Lei n, D. Seyitliyev n, L. Zhu n, S. He n, K. Gundogdu n, F. So n

author keywords: ion migration; perovskite light-emitting diodes; transient electroluminescence; transient current; device physics; charge injection
TL;DR: A combined analysis of both charge injection and recombination dynamics shows that the slow response of the efficiency is attributed to enhanced charge injection facilitated by ion migration, which leads to an increased carrier density favoring bimolecular radiative recombination. (via Semantic Scholar)
UN Sustainable Development Goal Categories
10. Reduced Inequalities (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: December 21, 2020

2019 journal article

Correction to Dense Electron–Hole Plasma Formation and Ultralong Charge Lifetime in Monolayer MoS2 via Material Tuning

Nano Letters, 19(7), 4816–4816.

By: A. Bataller, R. Younts, A. Rustagi, Y. Yu, H. Ardekani, A. Kemper, L. Cao, K. Gundogdu*

Source: ORCID
Added: June 29, 2019

2019 journal article

Dense Electron–Hole Plasma Formation and Ultralong Charge Lifetime in Monolayer MoS2 via Material Tuning

Nano Letters, 19(2), 1104–1111.

By: A. Bataller n, R. Younts n, A. Rustagi n, Y. Yu n, H. Ardekani n, A. Kemper n, L. Cao n, K. Gundogdu n

author keywords: Two-dimensional materials; MoS2; transition metal dichalcogenides; dense electron-hole plasma; bandgap renormalization; direct to indirect bandgap transition
TL;DR: This work studied the formation and dissipation of EHP in monolayer MoS2, finding a stable dense plasma state that is sustained with modest optical photoexcitation and paving the way for novel applications based on dense plasma states in two-dimensional semiconductors. (via Semantic Scholar)
Sources: ORCID, Crossref
Added: February 20, 2019

2019 journal article

Direct-Bandgap 2D Silver-Bismuth Iodide Double Perovskite: The Structure-Directing Influence of an Oligothiophene Spacer Cation

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 141(19), 7955–7964.

By: M. Jana*, S. Janke*, D. Dirkes*, S. Dovletgeldi n, C. Liu*, Qin, . gundogdu n, W. You* ...

TL;DR: This work demonstrates the first example of a 2D Ag-Bi iodide DP with a direct bandgap of 2.00(2) eV, templated by a layer of bifunctionalized oligothiophene cations, i.e., (bis-aminoethyl)bithiophene, through a collective influence of aromatic interactions, hydrogen bonding, bidentate tethering, and structural rigidity. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: June 4, 2019

2019 journal article

Low temperature cathodoluminescence study of Fe-doped β-Ga2O3

Materials Letters, 257, 126744.

By: I. Hany, G. Yang, C. Zhou n, C. Sun*, K. Gundogdu n, D. Seyitliyev n, E. Danilov n, F. Castellano n ...

Contributors: I. Hany, G. Yang, C. Zhou n, C. Sun*, K. Gundogdu n, D. Seyitliyev n, E. Danilov n, F. Castellano n, D. Sun n, E. Vetter n

UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (OpenAlex)
Sources: Web Of Science, NC State University Libraries, ORCID, Crossref
Added: November 18, 2019

2019 journal article

Near Band‐Edge Optical Excitation Leading to Catastrophic Ionization and Electron–Hole Liquid in Room‐Temperature Monolayer MoS2

Physica Status Solidi (b).

By: R. Younts n, A. Bataller n, H. Ardekani n, Y. Yu n, L. Cao n & K. Gundogdu n

author keywords: 2D materials; electron-hole liquid; MoS2; Mott transition
Source: ORCID
Added: August 12, 2019

2019 journal article

Phase-Pure Hybrid Layered Lead Iodide Perovskite Films Based on a Two-Step Melt-Processing Approach

CHEMISTRY OF MATERIALS, 31(11), 4267–4274.

By: T. Li, A. Zeidell*, G. Findik n, W. Dunlap-Shohl, J. Euvrard, K. Gundogdu n, O. Jurchescu*, D. Mitzi

UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: July 1, 2019

2019 journal article

Reversible Photoluminescence Tuning by Defect Passivation via Laser Irradiation on Aged Monolayer MoS2

ACS Applied Materials & Interfaces, 11(41), 38240–38246.

By: H. Ardekani n, R. Younts n, Y. Yu n, L. Cao n & K. Gundogdu n

author keywords: MoS2; photoluminescence; Raman; reversible defect passivation; exciton; oxygen; laser annealing
TL;DR: The enhancement of PL on aged 1L-MoS2 by laser treatment is associated with efficient adsorption of oxygen on existing sulfur vacancies preceded by removal of adsorbates from the sample's surface, resulting in a 6-8 fold increase in PL emission. (via Semantic Scholar)
Source: ORCID
Added: October 2, 2019

2019 journal article

Rigid valence band shift due to molecular surface counter-doping of MoS2

SURFACE SCIENCE, 679, 254–258.

By: D. Nevola n, B. Hoffman n, A. Bataller n, H. Ade n, K. Gundogdu n & D. Dougherty n

Sources: Web Of Science, NC State University Libraries
Added: January 21, 2019

2019 journal article

Room-Temperature Electron-Hole Liquid in Monolayer MoS2

ACS NANO, 13(9), 10351–10358.

By: Y. Yu n, A. Bataller n, R. Younts n, Y. Yu n, G. Li n, A. Puretzky*, D. Geohegan*, K. Gundogdu n, L. Cao n

author keywords: electron-hole plasma; exciton; phase transition; molybdenum disulfide; transitional metal dichalcogenides; TMDC
TL;DR: This work demonstrates the potential for the liquid-like state of charge excitations to be a useful platform for the studies of macroscopic quantum phenomena and the development of optoelectronic devices. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: October 14, 2019

2019 journal article

Tunable internal quantum well alignment in rationally designed oligomer-based perovskite films deposited by resonant infrared matrix-assisted pulsed laser evaporation

MATERIALS HORIZONS, 6(8), 1707–1716.

By: W. Dunlap-Shohl*, E. Barraza*, A. Barrette n, S. Dovletgeldi n, G. Findik n, D. Dirkes*, C. Liu*, M. Jana* ...

UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: October 7, 2019

2018 journal article

Aqueous Soluble Fullerene Acceptors for Efficient Eco-Friendly Polymer Solar Cells Processed from Benign Ethanol/Water Mixtures

CHEMISTRY OF MATERIALS, 30(16), 5663–5672.

By: Y. Kim*, J. Choi*, C. Lee*, Y. Kim*, C. Kim*, T. Nguyen*, B. Gautam*, . gundogdu n ...

UN Sustainable Development Goal Categories
Sources: Web Of Science, ORCID, NC State University Libraries
Added: October 19, 2018

2018 journal article

Charge generation dynamics in polymer nonfullerene solar cells with low energy loss

JOURNAL OF PHOTONICS FOR ENERGY, 8(3).

By: R. Younts n, E. Danilov n, K. Gundogdu n & B. Gautam*

author keywords: nonfullerene acceptors; charge transfer; charge separation; energy loss; heterojunction
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: February 11, 2019

2018 journal article

Every Atom Counts: Elucidating the Fundamental Impact of Structural Change in Conjugated Polymers for Organic Photovoltaics

CHEMISTRY OF MATERIALS, 30(9), 2995–3009.

By: C. Lo*, B. Gautam n, P. Selter*, Z. Zheng*, S. Oosterhout*, I. Constantinou n, R. Knitsch*, R. Wolfe* ...

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2018 journal article

Increased Exciton Delocalization of Polymer upon Blending with Fullerene

Advanced Materials, 30(30), 1801392.

By: B. Gautam n, E. Klump n, X. Yi n, I. Constantinou n, N. Shewmon n, A. Salehi n, C. Lo*, Z. Zheng* ...

author keywords: charge transfer states; electroabsorption; exciton delocalization; Frenkel exciton; polarizability
TL;DR: It is found that excited-state polarizability of polymer excitons in the blends is a strong function of blend nanomorphology and is a key parameter for efficient free carrier generation and should be considered in the design and development of high-performance polymer solar cells. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Crossref, NC State University Libraries
Added: December 5, 2019

2018 journal article

MAPbI(3) Solar Cells with Absorber Deposited by Resonant Infrared Matrix-Assisted Pulsed Laser Evaporation

ACS ENERGY LETTERS, 3(2), 270–275.

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2018 journal article

Polymer non-fullerene solar cells of vastly different efficiencies for minor side-chain modification: impact of charge transfer, carrier lifetime, morphology and mobility

JOURNAL OF MATERIALS CHEMISTRY A, 6(26), 12484–12492.

By: O. Awartani n, B. Gautam n, W. Zhao*, R. Younts n, J. Hou*, K. Gundogdu n, H. Ade n

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2018 journal article

The Role of FRET in Non-Fullerene Organic Solar Cells: Implications for Molecular Design

JOURNAL OF PHYSICAL CHEMISTRY A, 122(15), 3764–3771.

By: B. Gautam n, R. Younts n, J. Carpenter n, H. Ade n & K. Gundogdu n

TL;DR: It is shown that when charge transfer and exciton transfer processes are both present, the coexistence of excites in both domains can cause a loss mechanism and excitons in low-bandgap material should have a relatively long lifetime compared to the transfer time of exciton population in the larger bandgap acceptor domains. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2017 journal article

A near-infrared non-fullerene electron acceptor for high performance polymer solar cells

ENERGY & ENVIRONMENTAL SCIENCE, 10(7), 1610–1620.

By: Y. Li*, L. Zhong*, B. Gautam n, H. Bin*, J. Lin*, F. Wu*, Z. Zhang*, Z. Jiang* ...

UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2017 journal article

Efficient generation of long-lived triplet excitons in 2D hybrid perovskite

Advanced Materials, 29(9).

By: R. Younts, H. Duan, B. Gautam, B. Saparov, J. Liu, C. Mongin, F. Castellano, D. Mitzi, K. Gundogdu

Source: NC State University Libraries
Added: August 6, 2018

2017 journal article

Enhancing Multifunctionalities of Transition-Metal Dichalcogenide Monolayers via Cation Intercalation

ACS Nano, 11(9), 9390–9396.

By: Y. Yu*, G. Li*, L. Huang*, A. Barrette, Y. Cai*, Y. Yu*, K. Gundogdu*, Y. Zhang*, L. Cao*

author keywords: hydrogen ion; lithium ion; intercalation; molybdenum sulfide; tungsten sulfide; molybdenum selenide; tungsten selenide
TL;DR: It is demonstrated that multiple functionalities of transition-metal dichalcogenide (TMDC) monolayers may be substantially improved by the intercalation of small cations between the monolayer and underlying substrates, including photoluminescence efficiency and catalytic activity. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries, Web Of Science
Added: August 6, 2018

2017 journal article

Impact of highly crystalline, isoindigo-based small-molecular additives for enhancing the performance of all-polymer solar cells

JOURNAL OF MATERIALS CHEMISTRY A, 5(40), 21291–21299.

By: H. Cho*, G. Han*, R. Younts n, W. Lee*, B. Gautam*, S. Lee*, C. Lee*, T. Kim* ...

UN Sustainable Development Goal Categories
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2017 journal article

Impact of the photo-induced degradation of electron acceptors on the photophysics, charge transport and device performance of all-polymer and fullerene-polymer solar cells

JOURNAL OF MATERIALS CHEMISTRY A, 5(42), 22170–22179.

By: T. Kim*, R. Younts n, W. Lee*, S. Lee*, K. Gundogdu n & B. Kim*

UN Sustainable Development Goal Categories
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2017 journal article

Monitoring Charge Separation Processes in Quasi-One-Dimensional Organic Crystalline Structures

Nano Letters, 17(10), 6056–6061.

By: A. Popescu*, R. Younts, B. Hoffman, T. McAfee*, D. Dougherty*, H. Ade*, K. Gundogdu*, I. Bondarev*

author keywords: Crystalline phthalocyanines; Frenkel excitons; charge-transfer excitons; polarization
TL;DR: The transient absorption spectroscopy experiments investigate the dynamics of the low-energy collective electron-hole excitations in α-copper phthalocyanine thin films and find that, initially excited in the molecular plane, the intramolecular Frenkel exciton polarization reorients with time to align along the molecular chain direction to form coupled Frenkel-charge-transfer exciton states. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: January 25, 2020

2017 journal article

Single Component Organic Solar Cells Based on Oligothiophene-Fullerene Conjugate

Advanced Functional Materials, 27(39), 1702474.

author keywords: charge transfer; energy loss; organic photovoltaics; single component solar cells; transient absorption spectroscopy
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Crossref, NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2017 journal article

Strong polymer molecular weight-dependent material interactions: impact on the formation of the polymer/fullerene bulk heterojunction morphology

Journal of Materials Chemistry A, 5(25), 13176–13188.

By: J. Kim n, A. Gadisa n, C. Schaefer, H. Yao*, B. Gautam n, N. Balar n, M. Ghasemi n, I. Constantinou n ...

UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries, Crossref
Added: August 6, 2018

2017 journal article

The Impact of Sequential Fluorination of π-Conjugated Polymers on Charge Generation in All-Polymer Solar Cells

Advanced Functional Materials, 27(29), 1701256.

By: K. Kranthiraja*, S. Kim*, C. Lee*, K. Gunasekar*, V. Sree*, B. Gautam n, K. Gundogdu n, S. Jin*, B. Kim*

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Source: Crossref
Added: January 25, 2020

2017 journal article

The impact of sequential fluorination of pi-conjugated polymers on charge generation in all-polymer solar cells

Advanced Functional Materials, 27(29).

By: K. Kranthiraja, S. Kim, C. Lee, K. Gunasekar, V. Sree, B. Gautam, K. Gundogdu, S. Jin, B. Kim

Source: NC State University Libraries
Added: August 6, 2018

2016 journal article

A PCBM Electron Transport Layer Containing Small Amounts of Dual Polymer Additives that Enables Enhanced Perovskite Solar Cell Performance

ADVANCED SCIENCE, 3(9).

By: Z. Zhu*, Q. Xue*, H. He*, K. Jiang*, Z. Hu*, Y. Bai*, T. Zhang*, S. Xiao* ...

TL;DR: A polymer/PCBM hybrid electron transport layer is reported that enables high‐performance perovskite solar cells with a high power conversion efficiency of 16.2% and with negligible hysteresis. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2016 journal article

Charge photogeneration in organic photovoltaics: Role of hot versus cold charge-transfer excitons

Advanced Energy Materials, 6(1).

By: B. Gautam n, R. Younts n, W. Li*, L. Yan*, E. Danilov n, E. Klump n, I. Constantinou n, F. So n ...

Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2016 journal article

Controlling Energy Levels and Blend Morphology for All-Polymer Solar Cells via Fluorination of a Naphthalene Diimide-Based Copolymer Acceptor

MACROMOLECULES, 49(17), 6374–6383.

By: M. Uddin*, Y. Kim*, R. Younts n, W. Lee*, B. Gautam n, J. Choi*, C. Wang*, . gundogdu n ...

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2016 journal article

Design and synthesis of BODIPY sensitizers with long alkyl chains tethered to N-carbazole and their application for dye sensitized solar cells

MATERIALS CHEMISTRY AND PHYSICS, 184, 57–63.

By: H. Cheema n, R. Younts n, B. Gautam n, K. Gundogdu n & A. El-Shafei n

Contributors: H. Cheema n, R. Younts n, B. Gautam n, K. Gundogdu n & A. El-Shafei n

author keywords: Electronic materials; Interfaces; Optical materials; Surfaces; Electrochemical techniques
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: August 6, 2018

2016 journal article

Effects of Cd Diffusion and Doping in High-Performance Perovskite Solar Cells Using CdS as Electron Transport Layer

JOURNAL OF PHYSICAL CHEMISTRY C, 120(30), 16437–16445.

By: W. Dunlap-Shohl*, R. Younts n, B. Gautam n, K. Gundogdu n & D. Mitzi*

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2016 journal article

Efficient Charge Transfer and Fine-Tuned Energy Level Alignment in a THF-Processed Fullerene-Free Organic Solar Cell with 11.3% Efficiency

Advanced Materials, 29(5), 1604241.

By: Z. Zheng*, O. Awartani n, B. Gautam n, D. Liu*, Y. Qin*, W. Li*, A. Bataller n, . gundogdu n ...

TL;DR: Fullerene-free organic solar cells show over 11% power conversion efficiency, processed by low toxic solvents, and the applied donor and acceptor in the bulk heterojunction exhibit almost the same highest occupied molecular orbital level, yet exhibit very efficient charge creation. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries, Crossref
Added: August 6, 2018

2016 journal article

Efficient Generation of Long-Lived Triplet Excitons in 2D Hybrid Perovskite

Advanced Materials, 29(9), 1604278.

By: R. Younts n, H. Duan*, B. Gautam n, B. Saparov*, J. Liu*, C. Mongin n, F. Castellano n, D. Mitzi*, K. Gundogdu n

Contributors: R. Younts n, H. Duan*, B. Gautam n, B. Saparov*, J. Liu*, C. Mongin n, F. Castellano n, D. Mitzi*, K. Gundogdu n

TL;DR: Triplet excitons form in quasi-2D hybrid inorganic-organic perovskites and diffuse over 100 nm before radiating with >11% photoluminescence quantum efficiency (PLQE) at low temperatures. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Crossref, ORCID, NC State University Libraries
Added: January 25, 2020

2016 journal article

Engineering Substrate Interactions for High Luminescence Efficiency of Transition-Metal Dichalcogenide Monolayers

ADVANCED FUNCTIONAL MATERIALS, 26(26), 4733–4739.

UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2016 journal article

Fast charge separation in a non-fullerene organic solar cell with a small driving force

Nature Energy, 1(7).

By: J. Liu*, S. Chen*, D. Qian*, B. Gautam n, G. Yang*, J. Zhao*, J. Bergqvist*, F. Zhang* ...

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Crossref, NC State University Libraries
Added: June 30, 2019

2016 journal article

Fundamental limits of exciton-exciton annihilation for light emission in transition metal dichalcogenide monolayers

Physical Review B, 93(20).

Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2016 journal article

Lowest energy Frenkel and charge transfer exciton intermixing in one-dimensional copper phthalocyanine molecular lattice

APPLIED PHYSICS LETTERS, 109(21).

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2015 journal article

A femtosecond study of the anomaly in electron injection for dye-sensitized solar cells: the influence of isomerization employing Ru(II) sensitizers with anthracene and phenanthrene ancillary ligands

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 17(4), 2750–2756.

By: H. Cheema n, R. Younts n, L. Ogbose*, B. Gautam n, K. Gundogdu n & A. El-Shafei n

Contributors: H. Cheema n, R. Younts n, L. Ogbose*, B. Gautam n, K. Gundogdu n & A. El-Shafei n

TL;DR: Analysis of photo-induced spectral features measured by femtosecond transient absorption spectroscopy showed that excited electrons in HD-7 are prone to ISC (intersystem crossing) much more than HD-8 and those triplet electrons are not injected into TiO2 efficiently. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries, ORCID
Added: August 6, 2018

2015 journal article

Charge Generation Dynamics in Efficient All-Polymer Solar Cells: Influence of Polymer Packing and Morphology

ACS APPLIED MATERIALS & INTERFACES, 7(50), 27586–27591.

By: B. Gautam*, C. Lee*, R. Younts*, W. Lee*, E. Danilov*, B. Kim*, K. Gundogdu*

author keywords: all polymer solar cells; charge generation/recombination; nanomorphology; polymer packing; ultrafast spectroscopy
TL;DR: Measurement of exciton relaxation and charge separation dynamics using ultrafast spectroscopy in polymer/polymer blends with different molecular packing and morphology indicates that preferential face-on configuration with intermixed nanomorphology increases the charge generation efficiency. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2015 journal article

Charge Photogeneration in Organic Photovoltaics: Role of Hot versus Cold Charge-Transfer Excitons

Advanced Energy Materials, 6(1), 1301032.

By: B. Gautam n, R. Younts n, W. Li*, L. Yan*, E. Danilov n, E. Klump n, I. Constantinou n, F. So n ...

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Crossref, NC State University Libraries
Added: January 25, 2020

2015 journal article

Direct Optical Observation of Stimulated Emission from Hot Charge Transfer Excitons in Bulk Heterojunction Polymer Solar Cells

JOURNAL OF PHYSICAL CHEMISTRY C, 119(34), 19697–19702.

By: B. Gautam n, A. Barrette n, C. Mai n, L. Yan*, Q. Zhang*, E. Danilov n, W. You*, H. Ade n, K. Gundogdu n

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2014 journal article

Exciton valley relaxation in a single layer ofWS2measured by ultrafast spectroscopy

Physical Review B, 90(4).

By: C. Mai n, Y. Semenov n, A. Barrette n, Y. Yu n, Z. Jin n, L. Cao n, K. Kim n, K. Gundogdu n

Sources: Web Of Science, NC State University Libraries, Crossref
Added: August 6, 2018

2014 journal article

Influence of mono versus bis-electron-donor ancillary ligands in heteroleptic Ru(II) bipyridyl complexes on electron injection from the first excited singlet and triplet states in dye-sensitized solar cells

JOURNAL OF MATERIALS CHEMISTRY A, 2(34), 14228–14235.

By: H. Cheema n, A. Islam*, L. Han*, B. Gautam n, R. Younts n, K. Gundogdu n, A. El-Shafei n

Contributors: H. Cheema n, A. Islam*, L. Han*, B. Gautam n, R. Younts n, K. Gundogdu n, A. El-Shafei n

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: August 6, 2018

2014 journal article

Intrinsic and extrinsic effects on the electrostatic field at the surface of Bi2Se3

Journal of Applied Physics, 116(4), 043519.

By: C. Xu n, A. Hewitt n, J. Wang n, T. Guan n, J. Boltersdorf n, P. Maggard n, D. Dougherty n, K. Gundogdu n

Sources: Crossref, NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2014 journal article

More stable and more efficient alternatives of Z-907: carbazole-based amphiphilic Ru(II) sensitizers for dye-sensitized solar cells

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 16(48), 27078–27087.

Contributors: H. Cheema n, A. Islam*, R. Younts n, B. Gautam n, I. Bedja*, R. Gupta*, L. Han*, K. Gundogdu n, A. El-Shafei n

TL;DR: HDR-15 was strikingly stable to light soaking conditions when employed in the presence of an ionic liquid electrolyte, which paves the way for widespread applications of dye-sensitized solar cells with long term stability. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: August 6, 2018

2014 journal article

Spatial temperature mapping within polymer nanocomposites undergoing ultrafast photothermal heating via gold nanorods

NANOSCALE, 6(24), 15236–15247.

By: S. Maity n, W. Wu n, C. Xu n, J. Tracy n, K. Gundogdu n, J. Bochinski n, L. Clarke n

Contributors: S. Maity n, W. Wu n, C. Xu n, J. Tracy n, K. Gundogdu n, J. Bochinski n, L. Clarke n

MeSH headings : Gold / chemistry; Gold / radiation effects; Hot Temperature; Light; Materials Testing / methods; Metal Nanoparticles / chemistry; Metal Nanoparticles / radiation effects; Metal Nanoparticles / ultrastructure; Nanoconjugates / chemistry; Nanoconjugates / radiation effects; Nanoconjugates / ultrastructure; Nanotubes / chemistry; Nanotubes / radiation effects; Nanotubes / ultrastructure; Spectrometry, Fluorescence / methods; Thermography / methods
TL;DR: These observations definitively demonstrate the presence of a steady-state temperature gradient and indicate that localized heating via the photothermal effect within materials enables nanoscale thermal manipulations without significantly altering the bulk sample temperature in these systems. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: August 6, 2018

2014 conference paper

Ultrafast valley relaxation dynamics in single layer semiconductors

Ultrafast nonlinear imaging and spectroscopy ii, 9198.

By: A. Barrette, C. Mai, Y. Yu, Y. Semenov, Z. Jin, K. Kim, L. Cao, K. Gundogdu

Source: NC State University Libraries
Added: August 6, 2018

2013 journal article

Many-Body Effects in Valleytronics: Direct Measurement of Valley Lifetimes in Single-Layer MoS2

Nano Letters, 14(1), 202–206.

By: C. Mai n, A. Barrette n, Y. Yu n, Y. Semenov n, K. Kim n, L. Cao n, K. Gundogdu n

author keywords: MoS2; valley relaxation; transient absorption; many-body interactions; transition metal dichalcogenides; two-dimensional materials
TL;DR: Direct measurements of valley relaxation dynamics in single layer MoS2 are reported by using ultrafast transient absorption spectroscopy, showing that strong Coulomb interactions significantly impact valley population dynamics and biexcitons form with more than an order of magnitude larger binding energy compared to conventional semiconductors. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries, Crossref
Added: August 6, 2018

2012 journal article

Control of the oxidation kinetics of H-terminated (111)Si by using the carrier concentration and the strain: a second-harmonic-generation investigation

JOURNAL OF THE KOREAN PHYSICAL SOCIETY, 60(10), 1685–1689.

By: B. Gokce n, K. Gundogdu n & D. Aspnes*

author keywords: Oxidation; Silicon; Second harmonic generation
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2012 journal article

Effect of p-type doping on the oxidation of H-Si(111) studied by second-harmonic generation

Journal of Vacuum Science & Technology. A, Vacuum, Surfaces, and Films, 30(4).

By: B. Gokce, D. Dougherty & K. Gundogdu

Source: NC State University Libraries
Added: August 6, 2018

2011 article

Back-reflection Second-harmonic Generation of (111)Si: Theory and Experiment

Gokce, B., Gundogdu, K., Adles, E. J., & Aspnes, D. E. (2011, May). JOURNAL OF THE KOREAN PHYSICAL SOCIETY, Vol. 58, pp. 1237–1243.

By: B. Gokce*, K. Gundogdu*, E. Adles & D. Aspnes n

author keywords: Second-harmonic generation; (111)Si; Anisotropic bond model
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2011 journal article

Bond-specific reaction kinetics during the oxidation of (111) Si: Effect of n-type doping

Applied Physics Letters, 98(2), 021904.

By: B. Gokce n, D. Aspnes n, G. Lucovsky n & K. Gundogdu n

Sources: Crossref, NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2011 journal article

Effect of strain on bond-specific reaction kinetics during the oxidation of H-terminated (111) Si

Applied Physics Letters, 98(12), 121912.

By: B. Gokce n, D. Aspnes n & K. Gundogdu n

Sources: Crossref, NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2011 journal article

Invited Article: The coherent optical laser beam recombination technique (COLBERT) spectrometer: Coherent multidimensional spectroscopy made easier

Review of Scientific Instruments, 82(8), 081301.

By: D. Turner*, K. Stone*, K. Gundogdu* & K. Nelson*

TL;DR: An efficient spectrometer capable of performing a wide variety of coherent multidimensional measurements at optical wavelengths is developed, using the exciton states of a semiconductor nanostructure as a working example. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: September 9, 2020

2011 article

Measurement and Control of In-Plane Surface Chemistry During Oxidation of H-Terminated (111)Si

PHYSICS OF SEMICONDUCTORS: 30TH INTERNATIONAL CONFERENCE ON THE PHYSICS OF SEMICONDUCTORS, Vol. 1399.

By: B. Gokce*, E. Adles*, D. Aspnes* & K. Gundogdu*

author keywords: Silicon; nonlinear optics; oxidation; second-harmonic generation
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2010 journal article

Measurement and control of in-plane surface chemistry during the oxidation of H-terminated (111) Si

Proceedings of the National Academy of Sciences, 107(41), 17503–17508.

By: B. Gokce n, E. Adles n, D. Aspnes n & K. Gundogdu n

author keywords: silicon; hyperpolarizability; ellipsometry; metrology; optical
MeSH headings : Anisotropy; Chemistry / methods; Hydrogen / chemistry; Models, Chemical; Molecular Conformation; Nonlinear Dynamics; Oxidation-Reduction; Silicon / chemistry
TL;DR: This work demonstrates both control and measurement of the oxidation of H-terminated (111) Si by externally applying uniaxial strain, and measurement by second-harmonic generation (SHG) together with the anisotropic-bond model of nonlinear optics. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries, Crossref
Added: August 6, 2018

2009 article

Application of non-linear optical second harmonic generation and X-ray absorption and spectroscopies to defect related properties of Hf silicate and Hf Si oxynitride gate dielectrics

MICROELECTRONIC ENGINEERING, Vol. 86, pp. 1654–1657.

By: K. Gundogdu*, G. Lucovsky*, K. Chung*, J. Kim* & D. Nordlund

author keywords: Hf oxide based dielectrics; Phase separated Hf silicates; Hf Si oxynitrides; Non-linear optical second harmonic generation; X-ray absorption spectroscopy; Vacancy defects; Elimination of macroscopic strain
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2009 journal article

Efforts toward Developing Probes of Protein Dynamics: Vibrational Dephasing and Relaxation of Carbon–Deuterium Stretching Modes in Deuterated Leucine

The Journal of Physical Chemistry B, 113(23), 7991–7994.

By: J. Zimmermann*, K. Gundogdu*, M. Cremeens*, J. Bandaria*, G. Hwang*, M. Thielges*, C. Cheatum*, F. Romesberg*

MeSH headings : Carbon / chemistry; Deuterium / chemistry; Leucine / chemistry; Proteins / chemistry
TL;DR: The first time-resolved experiments characterizing the population and dephasing dynamics of selectively excited C-D bonds in a deuterated amino acid are presented, demonstrating the potential utility of C- D bonds as probes of dynamics and IVR within a protein. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: September 9, 2020

2009 journal article

Exciton−Exciton Correlations Revealed by Two-Quantum, Two-Dimensional Fourier Transform Optical Spectroscopy

Accounts of Chemical Research, 42(9), 1452–1461.

By: K. Stone*, D. Turner*, K. Gundogdu*, S. Cundiff* & K. Nelson*

TL;DR: A novel optical technique, 2Q 2D FTOPT, which allows direct observation of the dynamics of multiple exciton states that reflect the correlations of their constituent electrons and holes, and presents results from a prototype GaAs quantum well system, which reveals distinct coherences of biexcitons. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: September 9, 2020

2009 chapter

Three-Dimensional Electronic Four Wave-Mixing Spectroscopy in GaAs Quantum Wells

In Springer Series in Chemical Physics (pp. 286–288).

By: D. Turner*, K. Stone*, K. Gundogdu* & K. Nelson*

Sources: Crossref, NC State University Libraries
Added: September 9, 2020

2009 journal article

Three-dimensional electronic spectroscopy of excitons in GaAs quantum wells

The Journal of Chemical Physics, 131(14), 144510.

By: D. Turner*, K. Stone*, K. Gundogdu* & K. Nelson*

TL;DR: Three-dimensional electronic Fourier transform spectroscopy of GaAs quantum wells using four fully phase-coherent, noncollinear optical fields is demonstrated and a calibration procedure for the carrier frequency yields biexciton binding energy values with high accuracy. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: September 9, 2020

2009 chapter

Two-quantum Two-dimensional Fourier Transform Electronic Spectroscopy of Biexcitons in GaAs Quantum Wells

In Springer Series in Chemical Physics (pp. 250–252).

By: K. Stone*, K. Gundogdu*, D. Turner*, X. Li*, S. Cundiff* & K. Nelson*

Sources: Crossref, NC State University Libraries
Added: September 9, 2020

2007 journal article

Multidimensional coherent spectroscopy made easy

Chemical Physics, 341(1-3), 89–94.

By: K. Gundogdu*, K. Stone*, D. Turner* & K. Nelson*

author keywords: multidimensional spectroscopy; four-wave mixing; coherent; ultrafast spectroscopy; pulse shaping
Sources: Crossref, NC State University Libraries
Added: September 9, 2020

2004 journal article

Effects of rapid thermal annealing on the optical properties of low-loss 1.3μm GaInNAs∕GaAs saturable Bragg reflectors

Journal of Applied Physics, 96(3), 1418–1424.

By: H. Sun*, R. Macaluso*, S. Calvez*, G. Valentine*, D. Burns*, M. Dawson*, K. Gundogdu*, K. Hall* ...

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: September 9, 2020

2004 journal article

GaInNAs/GaAs Bragg-mirror-based structures for novel 1.3μm device applications

Journal of Crystal Growth, 268(3-4), 457–465.

By: S. Calvez*, J. Hopkins*, S. Smith*, A. Clark*, R. Macaluso*, H. Sun*, M. Dawson*, T. Jouhti* ...

author keywords: dilute nitrides; semiconducting III-V materials; semiconducting quaternary alloys; solid state lasers; vertical-cavity devices; vertical-cavity surface emitting lasers
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: September 9, 2020

Employment

Updated: May 4th, 2021 00:47

2008 - present

North Carolina State University Raleigh, North Carolina, US
Professor Physics

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