Efficient and moisture-resistant organic solar cells simultaneously reducing the surface defects and hydrophilicity of an electron transport layer
Organic solar cells (OSCs) simultaneously featuring good photovoltaic performance and strong humidity resistance are greatly anticipated for their practical application. Herein, we developed a simple organic trisiloxane molecule (denoted as TSi), and applied it to modify sol-gel ZnO (sg-ZnO) films....
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Published in | Journal of materials chemistry. C, Materials for optical and electronic devices Vol. 9; no. 38; pp. 135 - 1358 |
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Main Authors | , , , , , , , , , , , |
Format | Journal Article |
Published |
07.10.2021
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Online Access | Get full text |
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Abstract | Organic solar cells (OSCs) simultaneously featuring good photovoltaic performance and strong humidity resistance are greatly anticipated for their practical application. Herein, we developed a simple organic trisiloxane molecule (denoted as TSi), and applied it to modify sol-gel ZnO (sg-ZnO) films. Compared to pristine sg-ZnO films, the TSi/sg-ZnO film presents fewer surface defects, shallower work function, and stronger hydrophobicity. Benefiting from those improved characteristics, when adopting a benzodifuran (BDF)-based polymer (BDFP-Bz) and Y6 as the electron donor and acceptor to fabricate OSCs, the derived devices utilizing TSi/sg-ZnO as the electron transport layer (ETL) showed suppressed charge recombination, enhanced charge extraction and increased stability to moisture
versus
the devices based on an sg-ZnO ETL. Meanwhile, PBDFP-Bz:Y6 OSCs based on a TSi/sg-ZnO ETL delivered a higher PCE of 14.62% than that of the control devices (12.39%). More importantly, the TSi/sg-ZnO ETL was also applicable in other different photovoltaic systems, among which PM6:Y6 OSCs based on a TSi/sg-ZnO ETL yielded a superior PCE of 16.37% along with stronger stability to moisture
versus
the reference ones. Our finding demonstrates the TSi/sg-ZnO bilayer ETL holds promise in the practical application of OSCs for simultaneously improving the photovoltaic performance and moisture-resistance of devices.
A novel low-cost TSi/ZnO bilayer electron transport layer was developed, which could simultaneously enhance the efficiency and device stability to moisture of derived OSCs. |
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AbstractList | Organic solar cells (OSCs) simultaneously featuring good photovoltaic performance and strong humidity resistance are greatly anticipated for their practical application. Herein, we developed a simple organic trisiloxane molecule (denoted as TSi), and applied it to modify sol-gel ZnO (sg-ZnO) films. Compared to pristine sg-ZnO films, the TSi/sg-ZnO film presents fewer surface defects, shallower work function, and stronger hydrophobicity. Benefiting from those improved characteristics, when adopting a benzodifuran (BDF)-based polymer (BDFP-Bz) and Y6 as the electron donor and acceptor to fabricate OSCs, the derived devices utilizing TSi/sg-ZnO as the electron transport layer (ETL) showed suppressed charge recombination, enhanced charge extraction and increased stability to moisture
versus
the devices based on an sg-ZnO ETL. Meanwhile, PBDFP-Bz:Y6 OSCs based on a TSi/sg-ZnO ETL delivered a higher PCE of 14.62% than that of the control devices (12.39%). More importantly, the TSi/sg-ZnO ETL was also applicable in other different photovoltaic systems, among which PM6:Y6 OSCs based on a TSi/sg-ZnO ETL yielded a superior PCE of 16.37% along with stronger stability to moisture
versus
the reference ones. Our finding demonstrates the TSi/sg-ZnO bilayer ETL holds promise in the practical application of OSCs for simultaneously improving the photovoltaic performance and moisture-resistance of devices.
A novel low-cost TSi/ZnO bilayer electron transport layer was developed, which could simultaneously enhance the efficiency and device stability to moisture of derived OSCs. |
Author | Gao, Yueyue He, Shenghua Dong, Guohua Zhang, Wenzhi Tan, Furui Shang, Luwen Yue, Gentian Gao, Xueman Wang, Zhijie Su, Zhenhuang Wang, Zhangguo Qu, Shengchun |
AuthorAffiliation | Chinese Academy of Sciences College of Chemistry and Chemical Engineering & Heilongjiang Industrial Hemp Processing Technology Innovation Center Key Laboratory of Photovoltaic Materials Key Laboratory of Semiconductor Materials Science, Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices, Institute of Semiconductors Qiqihar University Shanghai Synchrotron Radiation Facility, Zhangjiang Laboratory, Shanghai Advanced Research Institute Henan University |
AuthorAffiliation_xml | – name: College of Chemistry and Chemical Engineering & Heilongjiang Industrial Hemp Processing Technology Innovation Center – name: Shanghai Synchrotron Radiation Facility, Zhangjiang Laboratory, Shanghai Advanced Research Institute – name: Chinese Academy of Sciences – name: Key Laboratory of Semiconductor Materials Science, Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices, Institute of Semiconductors – name: Qiqihar University – name: Key Laboratory of Photovoltaic Materials – name: Henan University |
Author_xml | – sequence: 1 givenname: Xueman surname: Gao fullname: Gao, Xueman – sequence: 2 givenname: Zhenhuang surname: Su fullname: Su, Zhenhuang – sequence: 3 givenname: Shengchun surname: Qu fullname: Qu, Shengchun – sequence: 4 givenname: Wenzhi surname: Zhang fullname: Zhang, Wenzhi – sequence: 5 givenname: Yueyue surname: Gao fullname: Gao, Yueyue – sequence: 6 givenname: Shenghua surname: He fullname: He, Shenghua – sequence: 7 givenname: Zhijie surname: Wang fullname: Wang, Zhijie – sequence: 8 givenname: Luwen surname: Shang fullname: Shang, Luwen – sequence: 9 givenname: Guohua surname: Dong fullname: Dong, Guohua – sequence: 10 givenname: Gentian surname: Yue fullname: Yue, Gentian – sequence: 11 givenname: Furui surname: Tan fullname: Tan, Furui – sequence: 12 givenname: Zhangguo surname: Wang fullname: Wang, Zhangguo |
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Title | Efficient and moisture-resistant organic solar cells simultaneously reducing the surface defects and hydrophilicity of an electron transport layer |
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