Simple non-fullerene electron acceptors with unfused core for organic solar cells
作者:Yao Li、Yunhua Xu、Fan Yang、Xudong Jiang、Cheng Li、Shengyong You、Weiwei Li
DOI:10.1016/j.cclet.2018.09.014
日期:2019.1
Abstract Two simple electron acceptors based on unfused bithiophene core and 1,1-dicyanomethylene-3-indanone end group were easily prepared via three synthetic steps. These acceptors exhibited broad absorption in the range of 300 nm to 800 nm, aligned energy levels and high crystallinity. When combined with a wide band gap donor polymer in non-fullerene solar cells, an initial power conversion efficiency
摘要通过三个合成步骤,可以轻松地制备两个基于未融合的联噻吩核和1,1-二氰基亚甲基-3-茚满酮端基的简单电子受体。这些受体表现出在300 nm至800 nm范围内的宽吸收,排列的能级和高结晶度。当与非富勒烯太阳能电池中的宽带隙供体聚合物结合使用时,初始功率转换效率为2.4%。效率相对较低是由于混合薄膜中的大相分离,这是由于它们在薄膜中的高聚集趋势所致。我们的结果表明,由于具有低成本的起始原料和容易的合成方法,这些具有未融合核的电子受体是太阳能电池商业应用的有前途的候选者。