Works (50)

2019 journal article

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

Nano Letters, 6.

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

Source: ORCID
Added: August 12, 2019

2019 journal article

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

Nano Letters, 1.

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

Source: ORCID
Added: August 12, 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, C. Liu, . Qin, K. Gundogdu, W. You ...

Sources: Web Of Science, ORCID
Added: June 4, 2019

2019 journal article

Low temperature cathodoluminescence study of Fe-doped beta-Ga2O3

MATERIALS LETTERS, 257.

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

Sources: Web Of Science, ORCID
Added: November 18, 2019

2019 journal article

Near Band‐Edge Optical Excitation Leading to Catastrophic Ionization and Electron–Hole Liquid in Room‐Temperature Monolayer MoS 2

Physica Status Solidi (b), 256(11), 1900223.

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

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, W. Dunlap-Shohl, J. Euvrard, K. Gundogdu, O. Jurchescu, D. Mitzi

Sources: Web Of Science, ORCID
Added: July 1, 2019

2019 journal article

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

ACS Applied Materials & Interfaces.

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

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.

Sources: NC State University Libraries, ORCID
Added: January 21, 2019

2019 journal article

Room-Temperature Electron-Hole Liquid in Monolayer MoS2

ACS NANO, 13(9), 10351–10358.

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

Sources: Web Of Science, ORCID
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, S. Dovletgeldi, G. Findik, D. Dirkes, C. Liu, M. Jana ...

Sources: Web Of Science, ORCID
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, 8(16), 5663–5672.

By: Y. Kim, J. Choi, C. Lee, Y. Kim, C. Kim, T. Nguyen, B. Gautam, K. Gundogdu ...

Sources: NC State University Libraries, ORCID
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, E. Danilov, . gundogdu & B. Gautam

Sources: NC State University Libraries, ORCID
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, 39(9), 2995–3009.

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

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

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.

By: W. Dunlap-Shohl, E. Barraza, A. Barrette, . gundogdu, A. Stiff-Roberts & D. Mitzi

Sources: NC State University Libraries, ORCID
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, B. Gautam, W. Zhao, R. Younts, J. Hou, K. Gundogdu, H. Ade

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

2018 journal article

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

The Journal of Physical Chemistry A, 122(15), 3764–3771.

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

Sources: NC State University Libraries, ORCID
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, H. Bin, J. Lin, F. Wu, Z. Zhang, Z. Jiang ...

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

2017 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).

By: Z. Zheng, O. Awartani, B. Gautam, D. Liu, Y. Qin, W. Li, A. Bataller, K. Gundogdu ...

Sources: NC State University Libraries, ORCID
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

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

J. Mater. Chem. A, 5(40), 21291–21299.

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

Sources: NC State University Libraries, ORCID
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

J. Mater. Chem. A, 5(42), 22170–22179.

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

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

2017 journal article

Single component organic solar cells based on oligothiophene-fullerene conjugate

Advanced Functional Materials, 27(39).

By: T. Nguyen, T. Lee, B. Gautam, S. Park, K. Gundogdu, J. Kim, H. Woo

Source: 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, A. Gadisa, C. Schaefer, H. Yao, B. Gautam, N. Balar, M. Ghasemi, I. Constantinou ...

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

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 ...

Sources: NC State University Libraries, ORCID
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, R. Younts, W. Li, L. Yan, E. Danilov, E. Klump, I. Constantinou, F. So ...

Sources: NC State University Libraries, ORCID
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, W. Lee, B. Gautam, J. Choi, C. Wang, K. Gundogdu ...

Sources: NC State University Libraries, ORCID
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.

Sources: 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, B. Gautam, . gundogdu & D. Mitzi

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

2016 journal article

Engineering substrate interactions for high luminescence efficiency of transition-metal dichalcogenide monolayers

Advanced Functional Materials, 26(26), 4733–4739.

By: Y. Yu, Y. Yu, C. Xu, Y. Cai, L. Su, Y. Zhang, Y. Zhang, . gundogdu, L. Cao

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

2016 journal article

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

Physical Review B, 93(20).

By: Y. Yu, Y. Yu, C. Xu, A. Barrette, . gundogdu & L. Cao

Sources: NC State University Libraries, ORCID
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).

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

Sources: NC State University Libraries, ORCID
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, R. Younts, L. Ogbose, B. Gautam, . gundogdu & A. El-Shafei

Sources: 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, . gundogdu

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

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, A. Barrette, C. Mai, L. Yan, Q. Zhang, E. Danilov, W. You, H. Ade, . gundogdu

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

2014 journal article

Exciton valley relaxation in a single layer of WS2 measured by ultrafast spectroscopy

Physical Review. B, Condensed Matter and Materials Physics, 90(4).

Sources: NC State University Libraries, ORCID
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, A. Islam, L. Han, B. Gautam, R. Younts, . gundogdu, A. El-Shafei

Sources: 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).

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

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

2014 journal article

Many-body effects in valleytronics: Direct measurement of valley lifetimes in single-layer MoS2

Nano Letters, 14(1), 202–206.

Sources: NC State University Libraries, ORCID
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.

By: H. Cheema, A. Islam, R. Younts, B. Gautam, I. Bedja, R. Gupta, L. Han, . gundogdu, A. El-Shafei

Sources: 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.

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

2014 conference paper

Ultrafast valley relaxation dynamics in single layer semiconductors

In Ultrafast nonlinear imaging and spectroscopy ii (Vol. 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

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, . gundogdu & D. Aspnes

Sources: NC State University Libraries, ORCID
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 conference paper

Back-reflection second-harmonic generation of (111)Si: Theory and experiment

In Journal of the Korean Physical Society (Vol. 58, pp. 1237–1243).

By: B. Gokce, . gundogdu, E. Adles & D. Aspnes

Sources: NC State University Libraries, ORCID
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).

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

Source: 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).

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

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

2011 conference paper

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

In Physics of semiconductors: 30th international conference on the physics of semiconductors (Vol. 1399).

By: B. Gokce, E. Adles, D. Aspnes & . gundogdu

Sources: NC State University Libraries, ORCID
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 of the United States of America, 107(41), 17503–17508.

By: B. Gokce, E. Adles, D. Aspnes & . gundogdu

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

2009 conference paper

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

In Microelectronic Engineering (Vol. 86, pp. 1654–1657).

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

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