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Cyano-functionalized small-molecule acceptors for high-efficiency wide-bandgap organic solar cells
Zhang, Jun1,2; Lv, Jie1,3; Dong, Xiyue1,3; Xu, Tongle1,3; Dai, Xuexin1,4; Duan, Tainan1; Kan, Zhipeng1; Liu, Ping2; Lu, Shirong1
2020-07-21
摘要Wide-bandgap non-fullerene acceptors (NFAs) are in high demand for constructing efficient ternary or tandem organic solar cells (OSCs), yet the scarcity of high performance wide-bandgap NFAs remains an important issue that need exploration and perfection. Here we designed and synthesized two NFAs (namely IDT-BC and IDT-C8-BC), featuring an indaceno[1,2-b:5,6-b ']dithiophene (IDT) core and electron-withdrawing benzo[c][1,2,5]thiadiazole-4-carbonitrile flanks. With optical bandgaps of 1.93 eV (IDT-BC) and 1.89 eV (IDT-C8-BC), respectively, they were both investigated for application in OSCs. By using polymer donor PBDB-T, single-junction OSCs based on two new NFAs are fabricated, giving power conversion efficiency (PCE) records of 6.3% (IDT-BC) and 7.3% (IDT-C8-BC). This work broadens the scope of developing new wide-bandgap NFAs with both high efficiency and easy accessibility.
DOI10.1039/d0tc02061c
发表期刊JOURNAL OF MATERIALS CHEMISTRY C
ISSN2050-7526
卷号8期号:27页码:9195-9200
通讯作者Duan, Tainan(tnduan@cigit.ac.cn) ; Kan, Zhipeng(kanzhipeng@cigit.ac.cn) ; Lu, Shirong(lushirong@cigit.ac.cn)
收录类别SCI
WOS记录号WOS:000549153600005
语种英语