Effect of dimethylamino substituent on tetraphenylethylene-based hole transport material in perovskite solar cells |
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| Affiliation: | 1. Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energy, Southwest University, Chongqing, 400715, PR China;2. Institute for Clean Energy & Advanced Materials, Faculty of Materials & Energy, Southwest University, Chongqing, 400715, PR China;1. School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China;2. Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China;3. Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China;4. Institute of Polymer Optoelectronic Materials and Devices, South China University of Technology, Guangzhou 510640, China;5. Key Laboratory of Specially Functional Materials and Advanced Manufacturing Technology, Ministry of Education, Guangzhou 510640, China;1. State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Microelectronics and Solid-State Electronics, University of Electronic Science and Technology of China, Chengdu 610054, PR China;2. State Key Laboratory of Luminescent Materials and Devices, Institute of Polymer Optoelectronic Materials and Devices, South China University of Technology, Guangzhou 510640, PR China;3. College of Materials Science and Engineering, Sichuan University, Chengdu 610065, PR China;4. State Key Laboratory of Applied Organic Chemistry, School of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, PR China;1. Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, School of Chemistry & Chemical Engineering, Tianjin University of Technology, Tianjin 300384, PR China;2. Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, PR China;1. Department of Chemistry Education, Graduate Department of Chemical Materials, and Institute for Plastic Information and Energy Materials, Pusan National University, Busan 46241, Republic of Korea;2. Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan;3. Advanced Functional Thin Films Department, Surface Technology Division, Korea Institute of Materials Science (KIMS), 797 Changwondaero, Sungsan-Gu, Changwon, Gyeongnam 642-831, Republic of Korea;1. FORTH/ICE-HT, P.O. Box 1414, 26504 Patras, Greece;2. Physics Department, University of Patras, 26500 Patras, Greece;3. Inorganic and Physical Chemistry Division, Indian Institute of Chemical Technology, Hyderabad 500 007, India;4. Department of Chemical Engineering, University of Patras, 26500 Patras, Greece;1. Department of Advanced Material Chemistry, Korea University Sejong Campus, Sejong-ro 2511, Sejong City, 339-700, Republic of Korea;2. Department of Bio-Nano Chemistry, Wonkwang University, 460 Iksandae, Jeonbuk, 54538, Republic of Korea |
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| Abstract: | A N,N-dimethylamino substituted tetraphenylethylene derivative (TPE-NMe) was synthesized and characterized, and was successfully applied as hole transport material (HTM) in perovskite solar cells. The methoxy-substituted analogue TPE-4DPA was also studied for comparison. The effect of replacing the para-methoxy substituent with N,N-dimethylamino on photophysical properties, energy levels, and hole transport properties is investigated. Photovoltaic performances of the corresponding devices using the two HTMs are studied. Compared to the methoxy substituent, the N,N-dimethylamino groups in TPE-NMe generates a lower Voc (0.87 V), yet it provides higher Jsc (21.69 mA/cm2) and FF (0.73) values, resulting in an overall power conversion efficiency of 13.78%. |
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| Keywords: | Perovskite solar cells Hole transport materials Power conversion efficiency Tetraphenylethylene |
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