Robert Alexander Younts

Works (17)

Updated: July 5th, 2023 15:42

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

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, 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

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

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

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

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

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

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 n, B. Hoffman n, T. McAfee n, D. Dougherty n, K. Gundogdu n , H. Ade 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

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

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

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

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

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