Zhang Zhenzhen, Yuan Jun, Wei Qingya, Zou Yingping
College of Chemistry and Chemical Engineering, Central South University, Changsha, China.
Front Chem. 2018 Sep 18;6:414. doi: 10.3389/fchem.2018.00414. eCollection 2018.
The development of organic electron acceptor materials is one of the key factors for realizing high performance organic solar cells. Compared to traditional fullerene acceptor materials, non-fullerene electron acceptors have attracted much attention due to their better optoelectronic tunabilities and lower cost as well as higher stability. Non-fullerene organic solar cells have recently experienced a rapid increase with power conversion efficiency of single-junction devices over 14% and a bit higher than 15% for tandem solar cells. In this review, two types of promising small-molecule electron acceptors are discussed: perylene diimide based acceptors and acceptor(A)-donor(D)-acceptor(A) fused-ring electron acceptors, focusing on the effects of structural modification on absorption, energy levels, aggregation and performances. We strongly believe that further development of non-fullerene electron acceptors will hold bright future for organic solar cells.
有机电子受体材料的发展是实现高性能有机太阳能电池的关键因素之一。与传统的富勒烯受体材料相比，非富勒烯电子受体因其更好的光电可调性、更低的成本以及更高的稳定性而备受关注。近年来，非富勒烯有机太阳能电池发展迅速，单结器件的功率转换效率超过14%，串联太阳能电池的功率转换效率略高于15%。在这篇综述中，讨论了两种有前景的小分子电子受体：苝二酰亚胺基受体和受体（A）-给体（D）-受体（A）稠环电子受体，重点关注结构修饰对吸收、能级、聚集和性能的影响。我们坚信，非富勒烯电子受体的进一步发展将为有机太阳能电池带来光明的未来。
