Abstract
Three low bandgap non-fullerene acceptors based on thieno[3,2-b]thiophene fused core with different ending groups, named TTIC-M, TTIC, TTIC-F were designed and synthesized. Using a wide bandgap polymer PBDB-T as donor to form a complementary absorption in the range of 300–900 nm, high efficencies of 9.97%, 10.87% and 9.51% were achieved for TTIC-M, TTIC and TTFC-F based photovoltaic devices with impressively high short circuit current over 21 mA cm−2.
摘要
本文设计合成了基于噻吩[3,2b]噻吩稠环受体具有不同末端基团的三个窄带系非富勒烯受体TTIC-M, TTIC和TTIC-F. 采用宽带隙聚合物PBDB-T为给体在300–900 nm光谱范围内形成了互补光吸收, 基于TTIC-M, TTIC和TTIC-F的光伏器件分别获得了高达9.97%,10.87%和9.51%的效率和高达21 mA cm−2的短路电流密度.
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Acknowledgements
The work was supported by the Minstry of Science and Technology (2014CB643502), the National Natural Science Foundation of China (91633301, 51422304 and 91433101), PCSIRT (IRT1257) and Tianjin city (17JCZDJC31100).
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Huan-Huan Gao is a PhD candidate under the supervision of Prof. Yongsheng Chen and Wan Xiangjian at Nankai University. She received her bachelor’s degree in chemistry from Nanyang Normal University in 2013 and master’s degree in organic chemistry from Nankai University in 2016. Her research focuses on the design and synthesis of organic photovoltaic materials.
Xiangjian Wan received his PhD degree in organic chemistry from Nankai University, China, in 2006. Currently, he is a professor at Nankai University. His research interests focus on the organic functional materials design and application, especially on the solution processed small molecule OPV materials and device optimization.
Yongsheng Chen received his PhD in chemistry at the University of Victoria in 1997. From 2003, he has been a Chair Professor at Nankai University. His main research interests focus on carbon-based nanomaterials and organic functional materials for green energy applications.
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Design and synthesis of low band gap non-fullerene acceptors for organic solar cells with impressively high Jsc over 21 mA cm_2
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Gao, HH., Sun, Y., Wan, X. et al. Design and synthesis of low band gap non-fullerene acceptors for organic solar cells with impressively high Jsc over 21 mA cm_2. Sci. China Mater. 60, 819–828 (2017). https://doi.org/10.1007/s40843-017-9084-x
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DOI: https://doi.org/10.1007/s40843-017-9084-x