Benzo[1,2-b:4,5-b′]dithiophene-Based Conjugated Polymers for Highly Efficient Organic Photovoltaics,Accounts of Materials Research

当前位置： X-MOL 学术 › Acc. Mater. Res. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Benzo[1,2-b:4,5-b′]dithiophene-Based Conjugated Polymers for Highly Efficient Organic Photovoltaics
Accounts of Materials Research ( IF 14.0 ) Pub Date : 2022-05-02 , DOI: 10.1021/accountsmr.2c00020
Cunbin An ₁ , Jianhui Hou _{1,

2}

Affiliation

In the past several years, power conversion efficiencies (PCEs) of bulk heterojunction (BHJ) single-junction organic photovoltaic (OPV) cells have increased rapidly because of the innovation of photovoltaic materials, including polymer donors and nonfullerene acceptors (NFAs), device engineering, and morphology optimization. The development of photovoltaic materials has been deemed as the core to imporve the PCEs of OPV cells. Regarding the diversification of NFAs, the rational design of polymer donors is becoming more and more challenging, because an ideal polymer donor is required not only to meet matched molecular energy levels and complementary absoprtion spectra with NFAs but also to improve BHJ morphology and electroluminescence quantum efficiency of OPV cells. Among tens of thousands of polymer donors, benzo[1,2-b:4,5-b′]dithiophene (BDT)-containing conjugated polymers have become dominant donor materials because they are closely related to the frequent breakthroughs in the PCEs of OPV cells. A comprehensive understanding of the correlation among their chemical structures, optical properties, aggregation behaviors, and photovoltaic efficiencies is urgently required to develop next-generation outstanding polymer donors.

中文翻译：

用于高效有机光伏的苯并[1,2-b:4,5-b']二噻吩基共轭聚合物

在过去的几年里，由于包括聚合物供体和非富勒烯受体（NFA）在内的光伏材料的创新，体异质结（BHJ）单结有机光伏（OPV）电池的功率转换效率（PCE）迅速提高，器件工程，以及形态优化。光伏材料的开发被认为是提高OPV电池PCE的核心。关于 NFA 的多样化，聚合物供体的合理设计变得越来越具有挑战性，因为理想的聚合物供体不仅需要满足与 NFA 匹配的分子能级和互补吸收光谱，而且还需要改善 BHJ 形态和电致发光量子效率OPV 电池。在数以万计的聚合物供体中，苯并[1,2- b:4,5- b ']二噻吩 (BDT) 共轭聚合物已成为主要的供体材料，因为它们与 OPV 电池 PCE 的频繁突破密切相关。迫切需要全面了解它们的化学结构、光学性质、聚集行为和光伏效率之间的相关性，以开发下一代优秀的聚合物供体。

更新日期：2022-05-02

点击分享查看原文

点击收藏

阅读更多本刊最新论文