Chem. J. Chinese Universities ›› 2023, Vol. 44 ›› Issue (9): 20230123.doi: 10.7503/cjcu20230123

• Review • Previous Articles     Next Articles

Molecular Stacking and Device Performance: Recent Advances of Efficient Small Molecule Donors Based on Benzodithiophene and Its Derivatives

YANG Ke1, XIAO Zeyun1(), LU Shirong1,3(), SUN Kuan2()   

  1. 1.Thin?film Solar Technology Research Center,Chongqing Institute of Green and Intelligent Technology,Chinese Academy of Sciences,Chongqing 400714,China
    2.Key Laboratory of Low Grade Energy Utilization Technology of the Ministry of Education,CQU?NUS Renewable Energy Materials & Devices Joint Laboratory,School of Energy & Power Engineering,Chongqing University,Chongqing 400044,China
    3.Department of Material Science and Technology,Taizhou University,Taizhou 318000,China
  • Received:2023-03-21 Online:2023-09-10 Published:2023-05-05
  • Contact: XIAO Zeyun, LU Shirong, SUN Kuan E-mail:xiao.z@cigit.ac.cn;lushirong@cigit.ac.cn;kuan.sun@cqu.edu.cn
  • Supported by:
    the National Key Research and Development Program of China(2022YFB3803300);the National Natural Science Foundation of China(62074149);the Chongqing Talents Plan Leading Talents of Science and Technology Innovation Project, China(cstc2020jcyjmsxmX0851);the Chongqing Funds for Distinguished Young Scientists, China(cstc2020jcyj-jqX0018);the Chongqing Talent Plan Exceptional Young Talents Project, China(CQYC201903008);the Fundamental Research Funds for the Central Universities, China(2020CDJQY-A055);the National Youth Thousand Program Project, China(R52A199Z11);the Natural Science Foundation of Chongqing, China(cstc2021ycjh-bgzxm0093)

Abstract:

The rapid development of all-small-molecule solar cell has recently gained recognition within the photovoltaic research community. Well-defined structure and less batch-to-batch variation empowered it great application prospects. In this perspective, we review the development of small molecule donors based on benzodithiophene(BDT) and its derivatives, with a focus on the relationship between molecule structure, stacking characteristics and device performance. By analyzing successful cases in the BDT series of small molecules, we aim to clarify the link between molecule structure, solid-state aggregation and device performance. We hope this discussion can be the minnow to catch the whale of highly efficient molecules in the future.

Key words: All-small-molecule organic photovoltaics, Benzodithiophene, Molecular stacking

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