Boosting the performance and stability of perovskite solar cells with phthalocyanine-based dopant-free hole transporting materials through core metal and peripheral groups engineering |
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| Affiliation: | 1. Tianjin Key Laboratory of Food Biotechnology, School of Biotechnology and Food Science, Tianjin University of Commerce, Tianjin, 300134, China;2. School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China;3. Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, China;1. School of Science, Tianjin University of Commerce, 300134 Tianjin, China;2. School of Chemical Engineering and Technology, Tianjin University, 300072 Tianjin, China;3. Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), 300072 Tianjin, China;1. State Key Lab for Physical Chemistry of Solid Surfaces, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China;2. Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen 361005, China;3. Beijing Key Laboratory of Novel Thin Film Solar Cells, School of Renewable Energy, North China Electric Power University, Beijing 102206, China;1. Key Laboratory of Artificial-Micro, and Nano-structures of Ministry of Education of China, School of Physics and Technology, Wuhan University, Wuhan 430072, PR China;2. Department of Chemistry, South University of Science and Technology of China, Shen Zhen, Guangdong 518000, PR China;1. Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou, Jiangsu 215123, China;2. Laboratory of Advanced Optoelectronic Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China;3. College of Electrical and Information Engineering, Shaanxi University of Science and Technology, Xi''an, Shaanxi, 710021, China;1. Department of Chemistry, South University of Science and Technology of China, Shenzhen, PR China;2. Shenzhen Institute of Wuhan University, Shenzhen, Guangdong, 518000, PR China;1. School of Chemical Engineering and Technology, Tianjin University, 300072 Tianjin, China;2. Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), 300072 Tianjin, China;3. School of Science, Tianjin University of Commerce, 300134 Tianjin, China |
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| Abstract: | Three novel dopant-free hole-transporting materials (HTMs) based on phthalocyanine core containing (4-methyl formate) phenoxy or (4-butyl formate) phenoxy as the peripheral groups with cupper or zinc as the core metals (CuPcNO2-OMFPh, CuPcNO2-OBFPh, ZnPcNO2-OBFPh) were designed and synthesized. All of the phthalocyanine complexes show excellent thermal stabilities, appropriate energy levels and suitable hole mobilities. The potential of three HTMs were tested in perovskite solar cells (PSCs) and ZnPcNO2-OBFPh based PSC obtained power conversion efficiency (PCE) of 15.74% under 100 mA cm−2 standard AM 1.5G solar illumination. Most important of all, PSC based on ZnPcNO2-OBFPh shows better stability than that of the other two phthalocyanines and Spiro-OMeTAD under continuous light irradiation at 60 °C and maximum power point tracking in ambient air without encapsulation after 500 h. The results show that the introduction of appropriate peripheral groups and core metals can improve the performance and stability of PSCs dramatically, which provides an alternative way to develop HTMs for efficient and stable PSCs. |
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| Keywords: | Hole transporting material Perovskite solar cells Stability Metallophthalocyanine |
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