Cationic Polyelectrolytes with Alkylsulfonate Counterions as a Cathode Interface Layer for High-Performance Polymer Solar Cells
Cationic Polyelectrolytes with Alkylsulfonate Counterions as a Cathode Interface Layer for High-Performance Polymer Solar Cells
复制标题
具有烷基磺酸盐抗衡离子的阳离子聚电解质作为高性能聚合物太阳能电池的阴极界面层
DOI：
10.1021/acsami.0c11341
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发表时间：
2020
影响因子：
9.5
通讯作者：
Tan Songting
中科院分区：
文献类型：
--
作者：
Duan Jiamin;Yu Yufu;Zeng Min;Weng Chao;Zhao Bin;Tan Songting
分别含有甲基磺酸盐、乙基磺酸盐和苄基磺酸盐的三种阳离子聚电解质聚乙烯亚胺乙氧基化物（PEIE）–1,4-丁二醇二甲基磺酸盐（MSB）、PEIE–1,4-丁二醇二乙基磺酸盐（ESB）和PEIE–1,4-丁二醇二苄基磺酸盐（BSB）分别用于阴极界面层（CIL）。以1,4-丁二醇二烷基磺酸酯和PEIE为反应物的一步反应。结果表明，具有较小抗衡离子的PEIE-MSB和PEIE-ESB比具有较大抗衡离子的PEIE-BSB具有更有效的电子提取、更高的电子迁移率和更好的光伏性能。以 PEIE-ESB 作为 CIL 的基于 PTB7-Th:PC71BM 的单结本体异质结聚合物太阳能电池 (PSC) 在 8 和 30 nm 的厚度条件下显示出功率转换效率 (PCE) 分别为 10.44 和 9.23%。基于 PM6:Y6 的 PSC 显示出 15.69% 的高 PCE。该研究不仅提供了新的高性能CIL，还提供了一种通过调节烷基磺酸盐抗衡离子构建免光浸泡PSC的新策略。
Three cationic polyelectrolytes polyethyleneimine ethoxylate (PEIE)–1,4-butanediol dimethylsulfonate (MSB), PEIE–1,4-butanediol diethylsulfonate (ESB), and PEIE–1,4-butanediol dibenzylsulfonate (BSB), containing methylsulfonate, ethylsulfonate, and benzylsulfonate, respectively, were prepared for cathode interface layers (CILs) via a one-step reaction with 1,4-butanediol dialkylsulfonate and PEIE as the reactants. The results indicate that PEIE–MSB and PEIE–ESB with smaller counterions possess more efficient electron extraction, higher electron mobilities, and better photovoltaic performance than PEIE–BSB with larger counterions. The PTB7-Th:PC71BM-based single junction bulk heterojunction polymer solar cells (PSCs) with PEIE–ESB as the CIL showed power conversion efficiencies (PCEs) of 10.44 and 9.23% under the thickness conditions of 8 and 30 nm, respectively. The PM6:Y6-based PSCs displayed a high PCE of 15.69%. The study provides not only new high-performance CILs but also a new strategy to construct light-soaking-free PSCs via tuning alkylsulfonate counterions.