Indunil Chathurangani Angunawela

Works (29)

Updated: January 20th, 2024 05:01

2023 article

Exciton Binding Energy in Organic Polymers: Experimental Considerations and Tuning Prospects

Kashani, S., Rech, J. J., Liu, T., Baustert, K., Ghaffari, A., Angunawela, I., … Ade, H. (2023, December 22). ADVANCED ENERGY MATERIALS, Vol. 12.

By: S. Kashani n, J. Rech*, T. Liu*, K. Baustert*, A. Ghaffari n, I. Angunawela n, Y. Xiong n, A. Dinku n ...

author keywords: cyclic voltammetry; exciton binding energy; organic semiconductors; transport gap; ultraviolet photoemission spectroscopy and low-energy inverse photoemission spectroscopy
Sources: Web Of Science, NC State University Libraries
Added: January 16, 2024

2023 journal article

Near-infrared absorbing acceptor with suppressed triplet exciton generation enabling high performance tandem organic solar cells

NATURE COMMUNICATIONS, 14(1).

By: Z. Jia*, Q. Ma*, Z. Chen*, L. Meng*, N. Jain*, I. Angunawela n, S. Qin*, X. Kong* ...

Sources: Web Of Science, NC State University Libraries
Added: April 4, 2023

2022 article

16.52% Efficiency All-Polymer Solar Cells with High Tolerance of the Photoactive Layer Thickness

Zhang, W., Sun, C., Angunawela, I., Meng, L., Qin, S., Zhou, L., … Li, Y. (2022, April 17). ADVANCED MATERIALS, Vol. 4.

By: W. Zhang*, C. Sun*, I. Angunawela n, L. Meng*, S. Qin*, L. Zhou*, S. Li*, H. Zhuo* ...

author keywords: all-polymer solar cells; energy level matching; morphology control; photoactive layer thickness; ternary devices
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: May 2, 2022

2022 article

A Benzo[1,2-b:4,5-b']Difuran Based Donor Polymer Achieving High-Performance (>17%) Single-Junction Organic Solar Cells with a Fill Factor of 80.4%

Yi, J., Pan, M., Chen, L., Chen, Y., Angunawela, I. C., Luo, S., … Yan, H. (2022, July 19). ADVANCED ENERGY MATERIALS, Vol. 7.

By: J. Yi*, M. Pan*, L. Chen*, Y. Chen*, I. Angunawela n, S. Luo*, T. Zhang*, A. Zeng* ...

author keywords: benzo[1,2-b:4,5-b']difuran; fill factors; morphology; organic solar cells; polymer donors
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: July 26, 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, ORCID, NC State University Libraries
Added: October 23, 2022

2022 journal article

Optimizing spectral and morphological match of nonfullerene acceptors toward efficient indoor organic photovoltaics with enhanced light source adaptability

NANO ENERGY, 98.

By: S. Luo*, F. Bai*, J. Zhang*, H. Zhao*, I. Angunawela n, X. Zou*, X. Li*, Z. Luo* ...

author keywords: Organic solar cells; Indoor organic photovoltaics; Non-fullerene acceptors; Side-chain engineering
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: June 6, 2022

2022 article

Small-Molecule Acceptor with Unsymmetric Substituents and Fused Rings for High-Performance Organic Solar Cells with Enhanced Mobility and Reduced Energy Losses

Li, Z., Kong, X., Chen, Z., Angunawela, I., Zhu, H., Li, X., … Li, Y. (2022, November 9). ACS APPLIED MATERIALS & INTERFACES, Vol. 11.

By: Z. Li*, X. Kong*, Z. Chen*, I. Angunawela n, H. Zhu*, X. Li*, L. Meng*, H. Ade n, Y. Li*

author keywords: organic solar cells; unsymmetric molecular structure; alkoxy substituent; small-molecule acceptors; nonradiative energy loss
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: November 28, 2022

2022 article

Ultrathin P(NDI2OD-T2) Films with High Electron Mobility in Both Bottom-Gate and Top-Gate Transistors

Steckmann, T., Angunawela, I., Kashani, S., Zhu, Y., Nahid, M. M., Ade, H., & Gadisa, A. (2022, March 2). ADVANCED ELECTRONIC MATERIALS, Vol. 3.

By: T. Steckmann n, I. Angunawela n, S. Kashani n, Y. Zhu n, M. Nahid n, H. Ade n, A. Gadisa n

author keywords: edge-on; mobility; transistor; ultrathin; water-processing
UN Sustainable Development Goal Categories
Sources: Web Of Science, ORCID, NC State University Libraries
Added: March 4, 2022

2021 article

A Chlorinated Donor Polymer Achieving High-Performance Organic Solar Cells with a Wide Range of Polymer Molecular Weight

Zeng, A., Ma, X., Pan, M., Chen, Y., Ma, R., Zhao, H., … Yan, H. (2021, June 16). ADVANCED FUNCTIONAL MATERIALS, Vol. 6.

By: A. Zeng*, X. Ma*, M. Pan*, Y. Chen*, R. Ma*, H. Zhao*, J. Zhang*, H. Kim* ...

author keywords: chlorination; molecular weight; organic solar cells; polymer donors
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: June 21, 2021

2021 journal article

A Difluoro-Monobromo End Group Enables High-Performance Polymer Acceptor and Efficient All-Polymer Solar Cells Processable with Green Solvent under Ambient Condition

ADVANCED FUNCTIONAL MATERIALS, 31(25).

By: H. Yu*, S. Luo*, R. Sun*, I. Angunawela n, Z. Qi*, Z. Peng n, W. Zhou*, H. Han* ...

author keywords: all‐ polymer solar cells; fluorinated end group; polymers; polymer acceptors; solar cells
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: May 17, 2021

2021 article

Alkyl-Chain Branching of Non-Fullerene Acceptors Flanking Conjugated Side Groups toward Highly Efficient Organic Solar Cells

Zhang, J., Bai, F., Angunawela, I., Xu, X., Luo, S., Li, C., … Yan, H. (2021, October 29). ADVANCED ENERGY MATERIALS, Vol. 10.

By: J. Zhang*, F. Bai*, I. Angunawela n, X. Xu*, S. Luo*, C. Li*, G. Chai*, H. Yu* ...

author keywords: alkyl chain branching; blend morphology control; non-fullerene acceptors; side-chain engineering
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: November 8, 2021

2021 journal article

High performance tandem organic solar cells via a strongly infrared-absorbing narrow bandgap acceptor

NATURE COMMUNICATIONS, 12(1).

By: Z. Jia*, S. Qin*, L. Meng*, Q. Ma*, I. Angunawela n, J. Zhang*, X. Li*, Y. He* ...

Sources: Web Of Science, NC State University Libraries
Added: April 19, 2021

2021 article

Introducing Low-Cost Pyrazine Unit into Terpolymer Enables High-Performance Polymer Solar Cells with Efficiency of 18.23%

Zhou, L., Meng, L., Zhang, J., Zhu, C., Qin, S., Angunawela, I., … Li, Y. (2021, November 8). ADVANCED FUNCTIONAL MATERIALS, Vol. 11.

By: L. Zhou*, L. Meng*, J. Zhang*, C. Zhu*, S. Qin*, I. Angunawela n, Y. Wan*, H. Ade n, Y. Li*

author keywords: conjugated polymer donors; polymer solar cells; pyrazine units; ternary random copolymerization; terpolymers
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: November 15, 2021

2021 journal article

Polymerized small molecular acceptor based all-polymer solar cells with an efficiency of 16.16% via tuning polymer blend morphology by molecular design

NATURE COMMUNICATIONS, 12(1).

By: J. Du*, K. Hu*, J. Zhang*, L. Meng*, J. Yue*, I. Angunawela n, H. Yan*, S. Qin* ...

TL;DR: Two A-DA’D-A small molecule acceptor based PSMAs of PS- Se with benzo[c][1,2,5]thiadiazole A’-core and PN-Se with benzotriazole A'-core are synthesized for the studies of the effect of molecular structure on the photovoltaic performance of the PSM as. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: September 20, 2021

2020 journal article

Effect of main and side chain chlorination on the photovoltaic properties of benzodithiophene-alt-benzotriazole polymers

JOURNAL OF MATERIALS CHEMISTRY C, 8(43), 15426–15435.

By: H. Bin*, I. Angunawela n, R. Ma*, A. Nallapaneni*, C. Zhu*, P. Leenaers*, B. Saes*, M. Wienk* ...

Sources: Web Of Science, NC State University Libraries
Added: November 30, 2020

2020 journal article

Effect of the chlorine substitution position of the end-group on intermolecular interactions and photovoltaic performance of small molecule acceptors

ENERGY & ENVIRONMENTAL SCIENCE, 13(12), 5028–5038.

By: X. Li*, I. Angunawela n, Y. Chang*, J. Zhou*, H. Huang*, L. Zhong*, A. Liebman-Pelaez*, C. Zhu* ...

UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: January 19, 2021

2020 journal article

Green solvent-processed organic solar cells based on a low cost polymer donor and a small molecule acceptor

JOURNAL OF MATERIALS CHEMISTRY C, 8(23), 7718–7724.

By: H. Huang*, X. Li*, C. Sun*, I. Angunawela n, B. Qiu*, J. Du*, S. Qin*, L. Meng* ...

UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: July 20, 2020

2020 journal article

High-Performance All-Polymer Solar Cells: Synthesis of Polymer Acceptor by a Random Ternary Copolymerization Strategy

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 59(35), 15181–15185.

By: J. Du*, K. Hu*, L. Meng*, I. Angunawela n, J. Zhang*, S. Qin*, A. Liebman-Pelaez*, C. Zhu* ...

author keywords: copolymerization; mechanical properties; polymers; solar cells; synthetic methods
TL;DR: The results demonstrate that the random ternary copolymerization of a small molecule acceptor unit with a third functional unit is a simple but effective strategy to develop efficient polymer acceptors for all-PSCs. (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: June 29, 2020

2020 journal article

Precise Control of Phase Separation Enables 12% Efficiency in All Small Molecule Solar Cells

ADVANCED ENERGY MATERIALS, 10(34).

author keywords: chlorination; crystallization; organic solar cells; phase separation; small molecular donors
TL;DR: Two new small‐molecular donors H13 and H14, created by fluorine and chlorine substitution of the original donor molecule H11, are presented that exhibit a similar or higher degree of crystallinity/aggregation and improved open‐circuit voltage with IDIC‐4F as acceptor. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: August 17, 2020

2020 journal article

Synergistic Use of Pyridine and Selenophene in a Diketopyrrolopyrrole-Based Conjugated Polymer Enhances the Electron Mobility in Organic Transistors

ADVANCED FUNCTIONAL MATERIALS, 30(34).

By: Q. Liu*, S. Kumagai*, S. Manzhos*, Y. Chen*, I. Angunawela n, M. Nahid n, K. Feron*, S. Bottle* ...

author keywords: electron mobility; electron transport; lowest unoccupied molecular orbital; organic field effect transistors; pyridine-flanked diketopyrrolopyrrole; selenophene
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: July 13, 2020

2019 journal article

Delineation of Thermodynamic and Kinetic Factors that Control Stability in Non-fullerene Organic Solar Cells

JOULE, 3(5), 1328–1348.

By: M. Ghasemi n, H. Hu n, Z. Peng n, J. Rech*, I. Angunawela n, J. Carpenter n, S. Stuard n, A. Wadsworth* ...

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: June 4, 2019

2019 journal article

Effect of Replacing Thiophene by Selenophene on the Photovoltaic Performance of Wide Bandgap Copolymer Donors

MACROMOLECULES, 52(12), 4776–4784.

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: July 15, 2019

2019 journal article

Effects of Short-Axis Alkoxy Substituents on Molecular Self-Assembly and Photovoltaic Performance of Indacenodithiophene-Based Acceptors

ADVANCED FUNCTIONAL MATERIALS, 30(3).

By: X. Li*, H. Huang*, I. Angunawela n, J. Zhou*, J. Du*, A. Liebman-Pelaez*, C. Zhu*, Z. Zhang* ...

author keywords: molecular self-assembly; morphology; polymer solar cells; side chain engineering; small molecule acceptors
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: November 4, 2019

2019 journal article

High voltage all polymer solar cells with a polymer acceptor based on NDI and benzotriazole

JOURNAL OF MATERIALS CHEMISTRY C, 7(29), 9031–9037.

By: Q. Ma*, X. Xue*, L. Zhong*, I. Angunawela n, S. Chen*, H. Ade n, L. Huo*, Z. Zhang*, Y. Li*

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 12, 2019

2019 journal article

Side-chain engineering of medium bandgap polymer donors for efficient polymer solar cells

ORGANIC ELECTRONICS, 78.

By: F. Pan*, C. Sun*, H. Bin*, I. Angunawela n, W. Lai*, L. Meng*, H. Ade n, Y. Li*

author keywords: Polymer solar cells; Conjugated polymer donors; Side chain engineering
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: March 23, 2020

2018 journal article

Competition between Exceptionally Long-Range Alkyl Sidechain Ordering and Backbone Ordering in Semiconducting Polymers and Its Impact on Electronic and Optoelectronic Properties

ADVANCED FUNCTIONAL MATERIALS, 29(5).

By: J. Carpenter n, M. Ghasemi n, E. Gann*, I. Angunawela n, S. Stuard n, J. Rech*, E. Ritchie*, . Brendan T. O'Connor n ...

author keywords: molecular design; organic electronics; polymer crystals; semiconducting polymers; sidechains
TL;DR: The observed influence of ordering between the moieties implies that improved molecular design could produce synergistic rather than destructive ordering effects and should greatly improve the coherence length of backbone ordering and thereby improve electronic and optoelectronic properties such as charge transport and exciton diffusion lengths. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: February 18, 2019

2018 journal article

High-Efficiency All-Small-Molecule Organic Solar Cells Based on an Organic Molecule Donor with Alkylsilyl-Thienyl Conjugated Side Chains

ADVANCED MATERIALS, 30(27).

By: H. Bin*, J. Yao*, Y. Yang*, I. Angunawela n, C. Sun*, L. Gao*, L. Ye n, B. Qiu* ...

Contributors: H. Bin*, J. Yao*, Y. Yang*, I. Angunawela n, C. Sun*, L. Gao*, L. Ye n, B. Qiu* ...

author keywords: alkylsilyl-thienyl conjugated side-chains; organic small-molecule donor materials; organic solar cells
TL;DR: Two medium-bandgap p-type organic small molecules H21 and H22 with an alkylsily-thienyl conjugated side chain on benzo shows blueshifted absorption, higher charge-carrier mobility and better 3D charge pathway in blend films. (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

2018 journal article

Improvement of Photovoltaic Performance of Polymer Solar Cells by Rational Molecular Optimization of Organic Molecule Acceptors

ADVANCED ENERGY MATERIALS, 8(23).

By: X. Li*, J. Yao*, I. Angunawela n, C. Sun*, L. Xue*, A. Liebman-Pelaez*, C. Zhu*, C. Yang* ...

author keywords: molecular structure optimization; n-type organic semiconductors; organic molecule acceptors; polymer solar cells; power conversion efficiencies
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: October 19, 2018

2018 journal article

Multi-length scale morphology of nonfullerene all-small molecule blends and its relation to device function in organic solar cells

MATERIALS CHEMISTRY FRONTIERS, 3(1), 137–144.

By: I. Angunawela n, L. Ye n, H. Bin*, Z. Zhang*, A. Gadisa n, Y. Li*, H. Ade n

UN Sustainable Development Goal Categories
Sources: Web Of Science, ORCID, NC State University Libraries
Added: January 21, 2019

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