Amphiphilic conjugated block copolymers for efficient bulk heterojunction solar cells
摘要:
通过GRIM聚合成功开发了具有极性取代基的聚(3-烷基噻吩)随机共聚物和双嵌段共聚物的合成。3-己基噻吩与一种新衍生物3-功能化噻吩(丙基5-(2-(噻吩-3-基)乙氧)戊酸酯)成功共聚,该衍生物含有酯功能。在优化条件下,该酯在格里尼亚法聚合中表现出完全的相容性。对共聚物酯进行皂化得到相应的聚酸。共聚物的光伏性能在以PC61BM作为受体的混合异质结器件中进行了研究。在所有的两亲共聚物中,P3HT-bb-P3AcidHT表现出最佳性能,光电转化效率(PCE)为4.2%,开路电压(Voc)为0.60 V,短路电流密度(Jsc)为13.0 mA cm⁻²,填充因子(FF)为0.60。
The synthesis of random and diblock copolymers of poly(3-alkylthiophene)s bearing polar substituents was successfully developed by GRIM polymerization. 3-Hexyl-thiophene was successfully copolymerised with a new derivative, 3-functionalised-thiophene (propyl 5-(2-(thiophen-3-yl)ethoxy)pentanoate), bearing an ester function. Under optimized conditions, this ester proved to be fully compatible with the Grignard metathesis polymerization. Saponification of the copolymer esters provided the corresponding polyacids. Photovoltaic properties of copolymers were investigated in bulk heterojunction devices with PC61BM as acceptor. Among all the amphiphilic copolymers, P3HT-bb-P3AcidHT showed the best performance with a PCE of 4.2%, an open-circuit voltage (Voc) of 0.60 V, a short-circuit current density (Jsc) of 13.0 mA cm−2, and a fill factor (FF) of 0.60.
通过GRIM聚合成功开发了具有极性取代基的聚(3-烷基噻吩)随机共聚物和双嵌段共聚物的合成。3-己基噻吩与一种新衍生物3-功能化噻吩(丙基5-(2-(噻吩-3-基)乙氧)戊酸酯)成功共聚,该衍生物含有酯功能。在优化条件下,该酯在格里尼亚法聚合中表现出完全的相容性。对共聚物酯进行皂化得到相应的聚酸。共聚物的光伏性能在以PC61BM作为受体的混合异质结器件中进行了研究。在所有的两亲共聚物中,P3HT-bb-P3AcidHT表现出最佳性能,光电转化效率(PCE)为4.2%,开路电压(Voc)为0.60 V,短路电流密度(Jsc)为13.0 mA cm⁻²,填充因子(FF)为0.60。