Affiliation:
1. State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Center of Smart Materials and Devices Wuhan University of Technology Wuhan 430070 China
2. International School of Materials Science and Engineering Wuhan University of Technology Wuhan 430070 China
3. School of Chemistry, Chemical Engineering and Life Science Wuhan University of Technology Wuhan 430070 China
Abstract
AbstractSinglet fission (SF) is a spin–allowed process in which a higher–energy singlet exciton is converted into two lower‐energy triplet excitons via a triplet pair intermediate state. Implementing SF in photovoltaic devices holds the potential to exceed the Shockley–Queisser limit of conventional single‐junction solar cells. Although great progress has been made in exploiting the underlying mechanism of SF over the past decades, the scope of materials capable of SF, particularly polymeric materials, remains poor. SF–capable polymer is one of the most potential candidates in the implementation of SF into devices due to their distinct superiorities in flexibility, solution processability and self‐assembly behavior. Notably, recent advancements have demonstrated high‐performance SF in isolated donor‐acceptor (D‐A) copolymer chains. This review provides an overview of recent progress in the development of SF‐capable polymeric materials, with a significant focus on elucidating the mechanisms of SF in polymers and optimizing the design strategies for SF‐capable polymers. Additionally, the paper discusses the challenges encountered in this field and presents future perspectives. It is expected that this comprehensive review will offer valuable insights into the design of novel SF‐capable polymeric materials, further advancing the potential for SF implementation in photovoltaic devices.
Funder
National Natural Science Foundation of China
Subject
Materials Chemistry,Polymers and Plastics,Organic Chemistry