Non-fullerene acceptors for organic solar cells

富勒烯 有机太阳能电池 电子受体 接受者 材料科学 二亚胺 纳米技术 化学 光化学 物理 分子 有机化学 复合材料 聚合物 凝聚态物理
作者
Cenqi Yan,Stephen Barlow,Zhaohui Wang,He Yan,Alex K.‐Y. Jen,Seth R. Marder,Xiaowei Zhan
出处
期刊:Nature Reviews Materials [Nature Portfolio]
卷期号:3 (3) 被引量:2456
标识
DOI:10.1038/natrevmats.2018.3
摘要

Non-fullerene acceptors (NFAs) are currently a major focus of research in the development of bulk-heterojunction organic solar cells (OSCs). In contrast to the widely used fullerene acceptors (FAs), the optical properties and electronic energy levels of NFAs can be readily tuned. NFA-based OSCs can also achieve greater thermal stability and photochemical stability, as well as longer device lifetimes, than their FA-based counterparts. Historically, the performance of NFA OSCs has lagged behind that of fullerene devices. However, recent developments have led to a rapid increase in power conversion efficiencies for NFA OSCs, with values now exceeding 13%, demonstrating the viability of using NFAs to replace FAs in next-generation high-performance OSCs. This Review discusses the important work that has led to this remarkable progress, focusing on the two most promising NFA classes to date: rylene diimide-based materials and materials based on fused aromatic cores with strong electron-accepting end groups. The key structure–property relationships, donor–acceptor matching criteria and aspects of device physics are discussed. Finally, we consider the remaining challenges and promising future directions for the NFA OSCs field. Non-fullerene acceptors have been widely used in organic solar cells over the past 3 years. This Review focuses on the two most promising classes of non-fullerene acceptors — rylene diimide-based materials and fused-ring electron acceptors — and discusses structure–property relationships, donor– acceptor matching criteria and device physics, as well as future research directions for the field.
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