Acenaphtho[1,2-b]quinoxaline diimides derivative as a potential small molecule non-fullerene acceptor for organic solar cells |
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| Affiliation: | 1. Instituto de Ciencia Molecular (ICMOL), Universidad de Valencia, Calle Catedrático José Beltrán, 2, 46980 Paterna, Spain;2. Skolkovo Institute of Science and Technology, 143025 Skolkovo, Moscow Region, Russia;3. Canatu Oy, Konalankuja 5, FI-00390, Helsinki Finland;4. Department of Applied Physics, Aalto University, School of Science, P.O. Box 15100, FI-00076 Aalto, Finland;5. St. Petersburg Polytechnic University, 195251, St. Petersburg, Russia;1. Department of Chemistry, Indian Institute of Technology Bombay, Mumbai 400076, India;2. Centre of Excellence in Nanoelectronics, Indian Institute of Technology Bombay, Mumbai 400076, India;3. National Centre for Photovoltaic Research and Education, Indian Institute of Technology Bombay, Mumbai 400076, India;4. National Centre of Excellence in Technologies for Internal Security, Indian Institute of Technology Bombay, Mumbai 400076, India;1. CAS Key Laboratory of Biomedical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Science (CAS), 88 Keling Road, Suzhou 215163, China;2. Institute of Theoretical Chemistry, Jilin University, Changchun 130023, China;3. Department of Chemical and Biomolecular Engineering, Lafayette College, Easton 18042, PA, USA;1. Laboratory of Organic Matter Physics, University of Nova Gorica, Nova Gorica, SI-5000, Slovenia;2. Department of Complex Matter, Jožef Stefan Institute, Ljubljana, SI-1000, Slovenia;3. Materials Research Laboratory, University of Nova Gorica, Nova Gorica, SI-5000, Slovenia;1. University of Rochester, Department of Chemistry, Rochester, NY 14627, USA;2. University of Rochester, Department of Chemical Engineering, Rochester, NY 14627, USA |
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| Abstract: | We designed and synthesized a small molecule acenaphtho[1,2-b]quinoxaline diimide derivative AQI-T2 as an electron-accepting material for non-fullerene organic solar cells. This molecule exhibits a relatively broad absorption band from 300 to 650 nm, with a moderately low-lying lowest unoccupied molecular orbital energy level of −3.64 eV. Non-fullerene organic solar cells with conventional structure using PTB7-Th as the electron donor and AQI-T2 as the electron acceptor exhibited moderate photovoltaic performances. The best performance was attained from the pristine device, which showed a power conversion efficiency of 0.77% with a relatively high open-circuit voltage of 0.86 V, a short circuit current of 2.04 mA cm−2 and a fill factor of 43.98%. These results indicated that this n-type molecule can be a promising electron-accepting material for non-fullerene organic solar cells. |
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| Keywords: | Organic solar cell n-type molecule |
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