Poly(6‐(4,7‐dimethyl‐2H‐benzo[d][1,2,3]triazol‐2‐yl)‐N,N,N‐trimethylhexan‐1 aminium iodide) (PBTz‐TMAI) and poly(sodium 4‐(4,7‐dimethyl‐2H‐benzo[d] [1,2,3]triazol‐2‐yl)butane‐1‐sulfonate) (PBTz‐SO₃Na) based on the same benzotriazole‐conjugated backbone but with ammonium and sulfonated side chains are designed and synthesized through side‐chain functionalization and Yamamoto polymerization, respectively, and are used as the cathode interlayers in fullerene‐ and non‐fullerene‐based polymer solar cells. The interfacial modification of PBTz‐TMAI and PBTz‐SO₃Na onto the active layer achieves good energy alignment at cathode electrodes and optimized exciton‐dissociation efficiency from the active layer. Consequently, the power conversion efficiencies (PCEs) of 7.8% and 9.6% are obtained for the fullerene PTB7:PC₇₁BM‐based and non‐fullerene PBDB‐T:ITIC‐based polymer solar cells (PSCs) with PBTz‐SO₃Na interlayer. The PCS devices based on PTB7:PC₇₁BM and PBDB‐T:ITIC active layers with PBTz‐TMAI interlayer achieved a remarkably improved performance with PCEs of 8.2% and 10.2%, respectively.

中文翻译：

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高效的聚合物太阳能电池，采用溶液处理的带不同电荷侧链的共轭聚电解质

聚（6-（4,7-二甲基-2H-苯并[d] [1,2,3]三唑-2-基）-N，N，N-三甲基己-1-碘化铵（PBTz-TMAI）和聚（4-（4,7-二甲基-2H-苯并[d] [1,2,3]三唑-2-基]丁烷-1-磺酸钠）（PBTz-SO ₃ Na）基于相同的苯并三唑共轭分别通过侧链官能化和Yamamoto聚合设计和合成具有铵和磺化侧链的骨架，并将其用作基于富勒烯和非富勒烯的聚合物太阳能电池的阴极中间层。PBTz-TMAI和PBTz-SO ₃的界面修饰将钠注入活性层可实现阴极电极的良好能量排列，并优化活性层的激子离解效率。因此，含PBTz-SO ₃ Na的富勒烯PTB7：PC ₇₁ BM型和非富勒烯PBDB‐T：ITIC型聚合物太阳能电池（PSC）的功率转换效率（PCE）分别为7.8％和9.6％夹层。基于带有PBTz-TMAI中间层的PTB7：PC ₇₁ BM和PBDB-T：ITIC有源层的PCS设备的PCE分别显着提高了性能，分别为8.2％和10.2％。