articleNature CommunicationsFeb 20, 2025GOLD OA

Polymer-like tetramer acceptor enables stable and 19.75% efficiency binary organic solar cells

JWJianxiao WangCSCheng SunYLYonghai LiFBFuzhen BiHJHuanxiang Jiang

Chinese Academy of Sciences · Beijing Solar Energy Research Institute · +4 more institutions

PubMed
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Abstract

Limited by large batch differences and inferior polymerization degree of current polymer acceptors, the potential high efficiency and stability advantages of all-polymer solar cells (all-PSCs) cannot be fully utilized. Alternatively, largely π-extended and structurally definite oligomer acceptors are effective strategies to realize the overall performance of polymer acceptors. Herein, we report a linear tetramer acceptor namely 4Y-BO with identical molecular skeleton and comparable molecular-weight relative to the control polymer acceptor PY-BO. The structurally definite tetramer shows refined film-forming kinetics and improved molecular ordering, offering uniform crystallinity with polymer donor and hence…

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66
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Authors

8

Topics & keywords

Topics
Keywords
  • Tetramer
  • Acceptor
  • Polymer
  • Materials science
  • Oligomer
  • Crystallinity
  • Polymerization
  • Organic solar cell
UN Sustainable Development Goals
  • Affordable and clean energy
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