All-polymer solar cells (all-PSCs) have garnered significant interest due to their unique advantages, including significantly improved device stability and mechanical stretchability compared with other types of organic solar cells. Recently, all-PSCs have achieved remarkable improvements in photovoltaic performance. Crucial to this advancement is the development of polymerized small-molecule acceptors (PSMAs) since 2017. First, we describe the development of various polymer acceptors (PAs) and discuss the main limitations of these PAs used in all-PSCs. Then, we focus our discussion on the concept of PSMA and summarize the design criteria of PSMAs as well as their structure-morphology-performance relationships. Additionally, we describe some typical strategies, including molecular mass control, processing conditions, polymer donor selection, and ternary strategy, to modulate morphology. Relevant photophysics research in all-PSCs is reviewed. Finally, we provide a concise summary, propose some research directions and opinions, and highlight key issues that need to be overcome to achieve high-performance all-PSCs.
Figure 1. Research content and progress of all polymer solar cells based on PSMA materials.
This work was financially supported by the National Natural Science Foundation of China (NSFC) (grant nos. 52061135206 and 22279094) and the Fundamental Research Funds for the Central Universities.
Original link: https://www.sciencedirect.com/science/article/pii/S2451929423002632
