Recent progress in Y-series small molecule acceptors in polymer solar cells

Abstract

Polymer solar cells (PSCs) have emerged as a hot research topic in next-generation photovoltaic technology due to their lightweight nature, low-cost fabrication and flexible characteristics. The development of Y-series small molecule acceptors (SMAs) has significantly enhanced photovoltaic performance. This review systematically summarized recent advances in Y-series SMAs, categorized by their electron-deficient fused-ring central cores of benzotriazole (BTA), benzothiadiazole (BT) and quinoxaline (Qx) with emphasis on how molecular structure optimization strategies, including central core engineering, side-chain engineering and end-group engineering, influence optoelectronic properties, film morphology and device performance. Finally, strategies for constructing high-efficiency PSCs are proposed to advance their future development.

Graphical abstract: Recent progress in Y-series small molecule acceptors in polymer solar cells

Article information

Article type
Feature Article
Submitted
27 Apr 2025
Accepted
02 Jun 2025
First published
04 Jun 2025

Chem. Commun., 2025, Advance Article

Recent progress in Y-series small molecule acceptors in polymer solar cells

M. Deng, L. Tan, H. Tang and Q. Peng, Chem. Commun., 2025, Advance Article , DOI: 10.1039/D5CC02352A

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