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Yang C, Shi SY, Zhang J, Wang L, Yu ZP, Zhou H. Unveiling the Impact of Light-Induced Acceptor-Generated ROS on Device Stability in Organic Photovoltaics. ACS APPLIED MATERIALS & INTERFACES 2024; 16:16573-16579. [PMID: 38511295 DOI: 10.1021/acsami.3c19612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/22/2024]
Abstract
The intrinsic stability of the acceptor is a crucial component of the photovoltaic device stability. In this study, we investigated the efficiency and stability of the nonfused-ring acceptors LC8 and BC8 under indoor light conditions. Interestingly, we found that devices based on BC8 with terminal side chains exhibited a higher indoor efficiency and stability. Through accelerated aging experiments, we discovered that the acceptors generate singlet oxygen under light exposure with BC8 demonstrating lower levels of ROS compared to LC8. We attribute this difference to the modulation of the acceptor aggregation orientation. Furthermore, the generated reactive oxygen species (ROS) further deteriorate the acceptor structure, and this phenomenon is also observed in high-efficiency acceptor structures, such as Y6. Our research reveals important mechanisms of acceptor photo-oxidation processes, providing a theoretical basis for enhancing the intrinsic stability of acceptors.
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Affiliation(s)
- Chao Yang
- Institute of Material Science and Information Technology, College of Chemistry and Chemical Engineering Anhui University and Key Laboratory of Functional Inorganic Mate-rials Chemistry of Anhui Province, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials, (Anhui University) Ministry of Education, Hefei 230601, P. R. China
| | - Sheng-Yu Shi
- School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu 241000, P. R. China
| | - Jie Zhang
- Institute of Material Science and Information Technology, College of Chemistry and Chemical Engineering Anhui University and Key Laboratory of Functional Inorganic Mate-rials Chemistry of Anhui Province, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials, (Anhui University) Ministry of Education, Hefei 230601, P. R. China
| | - Lianke Wang
- Institute of Material Science and Information Technology, College of Chemistry and Chemical Engineering Anhui University and Key Laboratory of Functional Inorganic Mate-rials Chemistry of Anhui Province, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials, (Anhui University) Ministry of Education, Hefei 230601, P. R. China
| | - Zhi-Peng Yu
- Institute of Material Science and Information Technology, College of Chemistry and Chemical Engineering Anhui University and Key Laboratory of Functional Inorganic Mate-rials Chemistry of Anhui Province, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials, (Anhui University) Ministry of Education, Hefei 230601, P. R. China
| | - Hongping Zhou
- Institute of Material Science and Information Technology, College of Chemistry and Chemical Engineering Anhui University and Key Laboratory of Functional Inorganic Mate-rials Chemistry of Anhui Province, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials, (Anhui University) Ministry of Education, Hefei 230601, P. R. China
- School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu 241000, P. R. China
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Feng W, Chen T, Li Y, Duan T, Jiang X, Zhong C, Zhang Y, Yu J, Lu G, Wan X, Kan B, Chen Y. Binary All-polymer Solar Cells with a Perhalogenated-Thiophene-Based Solid Additive Surpass 18 % Efficiency. Angew Chem Int Ed Engl 2024; 63:e202316698. [PMID: 38169129 DOI: 10.1002/anie.202316698] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Revised: 12/21/2023] [Accepted: 01/02/2024] [Indexed: 01/05/2024]
Abstract
Morphological control of all-polymer blends is quintessential yet challenging in fabricating high-performance organic solar cells. Recently, solid additives (SAs) have been approved to be capable in tuning the morphology of polymer: small-molecule blends improving the performance and stability of devices. Herein, three perhalogenated thiophenes, which are 3,4-dibromo-2,5-diiodothiophene (SA-T1), 2,5-dibromo-3,4-diiodothiophene (SA-T2), and 2,3-dibromo-4,5-diiodothiophene (SA-T3), were adopted as SAs to optimize the performance of all-polymer organic solar cells (APSCs). For the blend of PM6 and PY-IT, benefitting from the intermolecular interactions between perhalogenated thiophenes and polymers, the molecular packing properties could be finely regulated after introducing these SAs. In situ UV/Vis measurement revealed that these SAs could assist morphological character evolution in the all-polymer blend, leading to their optimal morphologies. Compared to the as-cast device of PM6 : PY-IT, all SA-treated binary devices displayed enhanced power conversion efficiencies of 17.4-18.3 % with obviously elevated short-circuit current densities and fill factors. To our knowledge, the PCE of 18.3 % for SA-T1-treated binary ranks the highest among all binary APSCs to date. Meanwhile, the universality of SA-T1 in other all-polymer blends is demonstrated with unanimously improved device performance. This work provide a new pathway in realizing high-performance APSCs.
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Affiliation(s)
- Wanying Feng
- School of Materials Science and Engineering, National Institute for Advanced Materials, Nankai University, 300350, Tianjin, China
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Frontiers Science Center for New Organic Matter, The Centre of Nanoscale Science and Technology and Key Laboratory of Functional Polymer Materials, Renewable Energy Conversion and Storage Center (RECAST), College of Chemistry, Nankai University, 300071, Tianjin, China
| | - Tianqi Chen
- School of Materials Science and Engineering, National Institute for Advanced Materials, Nankai University, 300350, Tianjin, China
| | - Yulu Li
- Chongqing Institute of Green and Intelligent Technology, Chongqing School, University of Chinese Academy of Sciences (UCAS Chongqing), Chinese Academy of Sciences, 400714, Chongqing, China
| | - Tainan Duan
- Chongqing Institute of Green and Intelligent Technology, Chongqing School, University of Chinese Academy of Sciences (UCAS Chongqing), Chinese Academy of Sciences, 400714, Chongqing, China
| | - Xue Jiang
- Chongqing Institute of Green and Intelligent Technology, Chongqing School, University of Chinese Academy of Sciences (UCAS Chongqing), Chinese Academy of Sciences, 400714, Chongqing, China
| | - Cheng Zhong
- Hubei Key Laboratory on Organic and Polymeric Opto-electronic Materials, College of Chemistry and Molecular Sciences, Wuhan University, 430072, Wuhan, China
| | - Yunxin Zhang
- School of Materials Science and Engineering, National Institute for Advanced Materials, Nankai University, 300350, Tianjin, China
| | - Jifa Yu
- Institute of Science and Technology, Xi'an Jiaotong University, 710054, Xi'an, China
| | - Guanghao Lu
- Institute of Science and Technology, Xi'an Jiaotong University, 710054, Xi'an, China
| | - Xiangjian Wan
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Frontiers Science Center for New Organic Matter, The Centre of Nanoscale Science and Technology and Key Laboratory of Functional Polymer Materials, Renewable Energy Conversion and Storage Center (RECAST), College of Chemistry, Nankai University, 300071, Tianjin, China
| | - Bin Kan
- School of Materials Science and Engineering, National Institute for Advanced Materials, Nankai University, 300350, Tianjin, China
| | - Yongsheng Chen
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Frontiers Science Center for New Organic Matter, The Centre of Nanoscale Science and Technology and Key Laboratory of Functional Polymer Materials, Renewable Energy Conversion and Storage Center (RECAST), College of Chemistry, Nankai University, 300071, Tianjin, China
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