Polythiophenes as electron donors in organic solar cells

IF 7.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Chemical Science Pub Date : 2025-07-21 DOI:10.1039/d5sc03154k

Xiyue Yuan, Jianglong Li, Wanting Deng, Xia Zhou, Chunhui Duan

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Abstract

Recent advancements in organic solar cells (OSCs) highlight the critical need for low-cost, readily available polymer donors to facilitate the commercialization of OSCs. Among the various photovoltaic materials, polythiophene (PT) and its derivatives have emerged as the most promising candidates for commercial applications, primarily due to their affordability and ease of scalable synthesis. Over the past few years, the combination of PTs with nonfullerene acceptors (NFAs) has led to significant improvements in photovoltaic efficiency. This paper provides a comprehensive overview of design strategies for polythiophene electron donors utilized in NFA-based OSCs, focusing on the modulation of energy levels and aggregation properties. It also evaluates recent progress in optimizing film morphology in PT:NFA blends, emphasizing key factors like donor-acceptor miscibility, solution-state aggregation control, and film-formation kinetics. Additionally, the paper explores the applications of PTs in all-polymer OSCs and large-area OSCs, as well as the stability of PT-based OSCs. Finally, the paper addresses scientific challenges associated with PT-based OSCs, aiming to provide guidance and stimulate new ideas for further research.

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多噻吩作为有机太阳能电池中的电子给体

有机太阳能电池（OSCs）的最新进展突出了对低成本，易于获得的聚合物供体的迫切需求，以促进OSCs的商业化。在各种光伏材料中，聚噻吩（PT）及其衍生物已成为最有希望的商业应用候选者，主要是因为它们的可负担性和易于扩展合成。在过去的几年中，pt与非富勒烯受体（nfa）的结合已经导致光伏效率的显着提高。本文全面概述了基于nfa的OSCs中使用的多噻吩电子给体的设计策略，重点介绍了能级和聚集性质的调制。它还评估了PT:NFA共混物中膜形态优化的最新进展，强调了供体-受体混溶、溶液状态聚集控制和成膜动力学等关键因素。此外，本文还探讨了pt在全聚合物OSCs和大面积OSCs中的应用，以及基于pt的OSCs的稳定性。最后，本文阐述了与基于pt的OSCs相关的科学挑战，旨在为进一步的研究提供指导和激发新的思路。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Chemical Science CHEMISTRY, MULTIDISCIPLINARY-

CiteScore

14.40

自引率

4.80%

发文量

1352

审稿时长

2.1 months

期刊介绍： Chemical Science is a journal that encompasses various disciplines within the chemical sciences. Its scope includes publishing ground-breaking research with significant implications for its respective field, as well as appealing to a wider audience in related areas. To be considered for publication, articles must showcase innovative and original advances in their field of study and be presented in a manner that is understandable to scientists from diverse backgrounds. However, the journal generally does not publish highly specialized research.