Polymer solar cells employing conjugated polyelectrolytes with different countercations

被引：0
作者：
Yueqin Shi
Enxiang Yang
Jun Zhang
Zhenguo Ji
机构：
[1] Hangzhou Dianzi University,College of Materials & Environmental Engineering
来源：
Colloid and Polymer Science | 2019年 / 297卷
关键词：
Conjugated polyelectrolytes; Interlayer; Different countercations; Polymer solar cells; Power conversion efficiency;
D O I：
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中图分类号：
学科分类号：
摘要：
Conjugated polyelectrolytes based on benzotriazole (BT) and benzothiadiazole (BTz) alt unit with a pendant sulfonate ion but different countercations were synthesized and named PBTBTz-SO3Na and PBTBTz-SO3TBA. PBTBTz-SO3Na was used as a cathode interface applied to polymer solar cells (PSCs), and ITO/PEDOT:PSS/active layer/cathode interlayer/Al was set as a device structure. The PSCs displayed an average power conversion efficiency (PCE) of 7.7%, revealing an unchanged efficiency in comparison with that of the control device fabricated from a CH3OH interlayer. TBA+, a different counteraction, was used instead of Na+ to further study the influence of counterions on the electrical property of PBTBTz-SO3−. PBTBTz-SO3TBA was used as a cathode interface to fabricate two types of PSCs based on PTB7:PC71BM and PBDB-T:ITIC, and their improved average PCEs were 8.6% and 9.1%, respectively.
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页码：1313 / 1319
页数：6
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