Simultaneously Enhancing the J(sc) and V-oc of Ternary Organic Solar Cells by Incorporating a Medium-Band-Gap Acceptor
Simultaneously Enhancing the J(sc) and V-oc of Ternary Organic Solar Cells by Incorporating a Medium-Band-Gap Acceptor
复制标题
通过结合中带隙受体同时增强三元有机太阳能电池的 J(sc) 和 V-oc
DOI：
10.1021/acsaem.0c03220
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发表时间：
2021
影响因子：
6.4
通讯作者：
Zou Yingping
中科院分区：
文献类型：
--
作者：
Zhang Min;Zeng Min;Deng Xiong;Zhou Zhijie;Tan Xiaoxiao;Tan Songting;Zhao Bin;Zhang Jianqi;Zou Yingping
Ternary organic solar cells (OSCs) are fabricated with a PM6:Y6 blend film as the host system and a medium-band-gap (MBG) acceptor (BTIC-Cl) with a high-lying lowest unoccupied molecular orbital (LUMO) energy level as the third component. The ternary blend film PM6:Y6:BTIC-Cl (1:1.2:0.2, wt/wt) possesses a more favorable morphology, better ordered face-on π–π stacking, higher charge mobilities, and more balanced charge transfer than the binary blend films and other ternary blend films. As a result, the ternary OSC with the ratio of 1:1.2:0.2 shows an impressive power conversion efficiency of 16.60% with synchronously enhancedJscof 27.25 mA cm–2andVocof 0.86 V, which are distinctly superior to those of the binary OSCs based on PM6:Y6 (15.50%) and PM6:BTIC-Cl (12.66%). These results provide an insight into the role of an MBG small-molecule acceptor with a high-lying LUMO energy level in ternary OSCs.
