https://scholars.lib.ntu.edu.tw/handle/123456789/415811
標題: | The Twisted Benzo[ghi]-Perylenetriimide Dimer as a 3D Electron Acceptor for Fullerene-Free Organic Photovoltaics | 作者: | Chen, H.-C. Jiang, B.-H. Hsu, C.-P. Tsai, Y.-Y. Jeng, R.-J. Chen, C.-P. RU-JONG JENG |
公開日期: | 2018 | 卷: | 24 | 期: | 66 | 起(迄)頁: | 17590-17597 | 來源出版物: | Chemistry - A European Journal | 摘要: | A series of twisted N,N-linked benzo[ghi]-perylenetriimide dimers (t-BPTI) with various lengths of the α-branched alkyl side chain at the six-membered imide ring position was designed, synthesized, and characterized. These compounds showed the low-lying LUMO energy level of −3.78 eV, which was similar to that of PC61BM (−3.71 eV), but with intensive optical absorption in the range 350–500 nm. The twisted molecular geometry with two nearly perpendicular BPTI planes achieved a favorable nanoscale phase separation by relieving the self-aggregation of rigid BPTI units in blend films. The acceptor t-BPTI-3 unit with the longest alkyl side chains has been demonstrated to be an efficient electron acceptor in solution-processed bulk heterojunction organic photovoltaics (OPV), giving a power conversion efficiency of 3.68 % when using conjugated polymer PTB7-Th as the donor and without additional treatments. © 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85055937611&doi=10.1002%2fchem.201804088&partnerID=40&md5=775fec2d49ef6a3c989bb1e35431977f https://scholars.lib.ntu.edu.tw/handle/123456789/415811 |
DOI: | 10.1002/chem.201804088 | SDG/關鍵字: | Chains; Charge transfer; Dimers; Heterojunctions; Light absorption; Organic solar cells; Phase separation; Additional treatment; Bulk heterojunction; Molecular geometries; Nano-scale phase separation; nonfullerene acceptor; Organic photovoltaics; Perylenediimides; Power conversion efficiencies; Conjugated polymers |
顯示於: | 化學系 |
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