A polymer library enables the rapid identification of a highly scalable and efficient donor material for organic solar cells.
A polymer library enables the rapid identification of a highly scalable and efficient donor material for organic solar cells.
复制标题
聚合物库能够快速识别有机太阳能电池的高度可扩展且高效的供体材料。
DOI：
10.1039/d3mh00787a
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发表时间：
2023
影响因子：
13.3
通讯作者：
Rimmele M
中科院分区：
文献类型：
--
作者：
Rimmele M
近年来，新型聚合物给体材料和非富勒烯受体（nfa）的发展推动了有机光伏器件功率转换效率（PCE）的显著提高。在这些材料的设计中，通常不考虑合成的可扩展性，因此复杂的合成协议是高性能材料的典型特征。本文报道了一种将多种增溶基团引入苯并[c][1,2,5]噻二唑受体共聚体的方法。这使得十一种不同侧链和共聚体的供体聚合物的库准备就绪，从而促进了性能和光伏器件性能的快速筛选。供体FO6-T在氯化和非氯化溶剂中具有良好的溶解度，L8BO为受体时PCE为15.4% (Y6为15.2%)，器件稳定性好。FO6-T很容易在克尺度上制备，合成复杂性（SC）分析表明FO6-T是一种有吸引力的大规模应用的给体聚合物。
The dramatic improvement of the PCE (power conversion efficiency) of organic photovoltaic devices in the past few years has been driven by the development of new polymer donor materials and non-fullerene acceptors (NFAs). In the design of such materials synthetic scalability is often not considered, and hence complicated synthetic protocols are typical for high-performing materials. Here we report an approach to readily introduce a variety of solubilizing groups into a benzo[c][1,2,5]thiadiazole acceptor comonomer. This allowed for the ready preparation of a library of eleven donor polymers of varying side chains and comonomers, which facilitated a rapid screening of properties and photovoltaic device performance. Donor FO6-T emerged as the optimal material, exhibiting good solubility in chlorinated and non-chlorinated solvents and achieving 15.4% PCE with L8BO as the acceptor (15.2% with Y6) and good device stability. FO6-T was readily prepared on the gram scale, and synthetic complexity (SC) analysis highlighted FO6-T as an attractive donor polymer for potential large scale applications.