Over 17% Efficiency Binary Organic Solar Cells with Photoresponses Reaching 1000 nm Enabled by Selenophene-Fused Nonfullerene Acceptors

Feng Qi; Kui Jiang; Francis Lin; Ziang Wu; Hongna Zhang; Wei Gao; Yuxiang Li; Zongwei Cai; Han Young Woo; Zonglong Zhu; Alex K.Y. Jen

doi:10.1021/acsenergylett.0c02230

Over 17% Efficiency Binary Organic Solar Cells with Photoresponses Reaching 1000 nm Enabled by Selenophene-Fused Nonfullerene Acceptors

Feng Qi, Kui Jiang, Francis Lin, Ziang Wu, Hongna Zhang, Wei Gao, Yuxiang Li, Zongwei Cai, Han Young Woo, Zonglong Zhu, Alex K.Y. Jen^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

103 Citations (Scopus)

Abstract

Nonfullerene acceptors (NFAs) have played an important role in the development of organic solar cells. However, the optical absorption of most NFAs is limited within 600-900 nm, prohibiting further improvement of short-circuit current density (Jsc). To alleviate this problem, a fused-ring I-core BzS was designed by combining weakly electron-withdrawing benzotriazole (Bz) and strongly electron-donating selenophene together. Besides, the length of N-alkyl chain on the Bz moiety was engineered to tune the morphology, affording two NFAs mBzS-4F and EHBzS-4F. Both NFAs possess an absorption edge approaching 1000 nm, as resulted from the enhanced intramolecular charge transfer in conjunction with efficient intra- A nd intermolecular interactions. Binary photovoltaic devices based on PM6:mBzS-4F showed a power conversion efficiency of 17.02% with a very high Jsc of 27.72 mA/cm2 and a low energy loss of 0.446 eV. This work provides a strategy for future design of efficient NIR-responsive materials.

Original language	English
Pages (from-to)	9-15
Number of pages	7
Journal	ACS Energy Letters
Volume	6
Issue number	1
Early online date	20 Nov 2020
DOIs	https://doi.org/10.1021/acsenergylett.0c02230
Publication status	Published - 8 Jan 2021

Scopus Subject Areas

Chemistry (miscellaneous)
Renewable Energy, Sustainability and the Environment
Fuel Technology
Energy Engineering and Power Technology
Materials Chemistry

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This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1021/acsenergylett.0c02230

Cite this

@article{c0e84b4ce96d4c9a927a114f38ca1d1e,

title = "Over 17% Efficiency Binary Organic Solar Cells with Photoresponses Reaching 1000 nm Enabled by Selenophene-Fused Nonfullerene Acceptors",

abstract = "Nonfullerene acceptors (NFAs) have played an important role in the development of organic solar cells. However, the optical absorption of most NFAs is limited within 600-900 nm, prohibiting further improvement of short-circuit current density (Jsc). To alleviate this problem, a fused-ring I-core BzS was designed by combining weakly electron-withdrawing benzotriazole (Bz) and strongly electron-donating selenophene together. Besides, the length of N-alkyl chain on the Bz moiety was engineered to tune the morphology, affording two NFAs mBzS-4F and EHBzS-4F. Both NFAs possess an absorption edge approaching 1000 nm, as resulted from the enhanced intramolecular charge transfer in conjunction with efficient intra- A nd intermolecular interactions. Binary photovoltaic devices based on PM6:mBzS-4F showed a power conversion efficiency of 17.02% with a very high Jsc of 27.72 mA/cm2 and a low energy loss of 0.446 eV. This work provides a strategy for future design of efficient NIR-responsive materials. ",

author = "Feng Qi and Kui Jiang and Francis Lin and Ziang Wu and Hongna Zhang and Wei Gao and Yuxiang Li and Zongwei Cai and Woo, {Han Young} and Zonglong Zhu and Jen, {Alex K.Y.}",

note = "Funding Information: This work was supported by the APRC Grant of the City University of Hong Kong (9380086 and 9610421), Innovation and Technology Fund (ITS/497/18FP and GHP/021/18SZ), the Office of Naval Research (N00014-20-1-2191), the Air Force Office of Scientific Research (FA9550-18-1-0046), the ECS grant (CityU 21301319) from the Research Grants Council of Hong Kong, Natural Science Foundation of Guangdong Province (2019A1515010761), Guangdong Major Project of Basic and Applied Basic Research (2019B030302007), Guangdong-Hong Kong-Macao joint laboratory of optoelectronic and magnetic functional materials (2019B121205002). H.Y.W. acknowledges the support from the National Research Foundation (NRF) of Korea (NRF-2016M1A2A2940911 and 2019R1A6A1A11044070). The authors also thank Dr. Baobing Fan from the City University of Hong Kong for his help to make this work more complete.",

year = "2021",

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doi = "10.1021/acsenergylett.0c02230",

language = "English",

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T1 - Over 17% Efficiency Binary Organic Solar Cells with Photoresponses Reaching 1000 nm Enabled by Selenophene-Fused Nonfullerene Acceptors

AU - Qi, Feng

AU - Jiang, Kui

AU - Lin, Francis

AU - Wu, Ziang

AU - Zhang, Hongna

AU - Gao, Wei

AU - Li, Yuxiang

AU - Cai, Zongwei

AU - Woo, Han Young

AU - Zhu, Zonglong

AU - Jen, Alex K.Y.

N1 - Funding Information: This work was supported by the APRC Grant of the City University of Hong Kong (9380086 and 9610421), Innovation and Technology Fund (ITS/497/18FP and GHP/021/18SZ), the Office of Naval Research (N00014-20-1-2191), the Air Force Office of Scientific Research (FA9550-18-1-0046), the ECS grant (CityU 21301319) from the Research Grants Council of Hong Kong, Natural Science Foundation of Guangdong Province (2019A1515010761), Guangdong Major Project of Basic and Applied Basic Research (2019B030302007), Guangdong-Hong Kong-Macao joint laboratory of optoelectronic and magnetic functional materials (2019B121205002). H.Y.W. acknowledges the support from the National Research Foundation (NRF) of Korea (NRF-2016M1A2A2940911 and 2019R1A6A1A11044070). The authors also thank Dr. Baobing Fan from the City University of Hong Kong for his help to make this work more complete.

PY - 2021/1/8

Y1 - 2021/1/8

N2 - Nonfullerene acceptors (NFAs) have played an important role in the development of organic solar cells. However, the optical absorption of most NFAs is limited within 600-900 nm, prohibiting further improvement of short-circuit current density (Jsc). To alleviate this problem, a fused-ring I-core BzS was designed by combining weakly electron-withdrawing benzotriazole (Bz) and strongly electron-donating selenophene together. Besides, the length of N-alkyl chain on the Bz moiety was engineered to tune the morphology, affording two NFAs mBzS-4F and EHBzS-4F. Both NFAs possess an absorption edge approaching 1000 nm, as resulted from the enhanced intramolecular charge transfer in conjunction with efficient intra- A nd intermolecular interactions. Binary photovoltaic devices based on PM6:mBzS-4F showed a power conversion efficiency of 17.02% with a very high Jsc of 27.72 mA/cm2 and a low energy loss of 0.446 eV. This work provides a strategy for future design of efficient NIR-responsive materials.

AB - Nonfullerene acceptors (NFAs) have played an important role in the development of organic solar cells. However, the optical absorption of most NFAs is limited within 600-900 nm, prohibiting further improvement of short-circuit current density (Jsc). To alleviate this problem, a fused-ring I-core BzS was designed by combining weakly electron-withdrawing benzotriazole (Bz) and strongly electron-donating selenophene together. Besides, the length of N-alkyl chain on the Bz moiety was engineered to tune the morphology, affording two NFAs mBzS-4F and EHBzS-4F. Both NFAs possess an absorption edge approaching 1000 nm, as resulted from the enhanced intramolecular charge transfer in conjunction with efficient intra- A nd intermolecular interactions. Binary photovoltaic devices based on PM6:mBzS-4F showed a power conversion efficiency of 17.02% with a very high Jsc of 27.72 mA/cm2 and a low energy loss of 0.446 eV. This work provides a strategy for future design of efficient NIR-responsive materials.

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U2 - 10.1021/acsenergylett.0c02230

DO - 10.1021/acsenergylett.0c02230

M3 - Article

AN - SCOPUS:85097894707

SN - 2380-8195

VL - 6

SP - 9

EP - 15

JO - ACS Energy Letters

JF - ACS Energy Letters

IS - 1

ER -

Over 17% Efficiency Binary Organic Solar Cells with Photoresponses Reaching 1000 nm Enabled by Selenophene-Fused Nonfullerene Acceptors

Abstract

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