SCI和EI收录∣中国化工学会会刊

中国化学工程学报 ›› 2022, Vol. 45 ›› Issue (5): 51-57.DOI: 10.1016/j.cjche.2021.03.052

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An asymmetrically substituted dithieno[3,2-b:2',3'-d]pyrrole organic small-molecule hole-transporting material for high-performance perovskite solar cells

Jingwen Jia1,2, Yue Zhang1, Liangsheng Duan2, Quanping Wu1, Yu Chen2, Song Xue2   

  1. 1 Tianjin Key Laboratory for Advanced Mechatronic System Design and Intelligent Control, School of Mechanical Engineering, Tianjin University of Technology, Tianjin 300384, China;
    2 Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, Department of Applied Chemistry, Tianjin University of Technology, Tianjin 300384, China
  • 收稿日期:2021-01-10 修回日期:2021-03-11 出版日期:2022-05-28 发布日期:2022-06-22
  • 通讯作者: Yue Zhang,E-mail:zhangyue@email.tjut.edu.cn;Yu Chen,E-mail:chenyu18417@email.tjut.edu.cn
  • 基金资助:
    This work was supported by the Scientific Research Project of Tianjin Municipal Education Committee (2017KJ261).

An asymmetrically substituted dithieno[3,2-b:2',3'-d]pyrrole organic small-molecule hole-transporting material for high-performance perovskite solar cells

Jingwen Jia1,2, Yue Zhang1, Liangsheng Duan2, Quanping Wu1, Yu Chen2, Song Xue2   

  1. 1 Tianjin Key Laboratory for Advanced Mechatronic System Design and Intelligent Control, School of Mechanical Engineering, Tianjin University of Technology, Tianjin 300384, China;
    2 Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, Department of Applied Chemistry, Tianjin University of Technology, Tianjin 300384, China
  • Received:2021-01-10 Revised:2021-03-11 Online:2022-05-28 Published:2022-06-22
  • Contact: Yue Zhang,E-mail:zhangyue@email.tjut.edu.cn;Yu Chen,E-mail:chenyu18417@email.tjut.edu.cn
  • Supported by:
    This work was supported by the Scientific Research Project of Tianjin Municipal Education Committee (2017KJ261).

摘要: Hole-transporting materials play a vital role in terms of the performance of perovskite solar cells (PSCs). The dithieno[3,2-b:2',3'-d]pyrrole (DTP), an S,N-heterocyclic building block, has been proved to be desirable for molecular design of hole-transporting materials in PSCs. We developed an asymmetrically substituted DTP small-molecule (JW12) and a reference compound (JW11). The asymmetrical structure of JW12 leads to different absorption properties and electron distribution. The device in a planar n-i-p architecture using JW12 shows a much higher PCE (18.07%) than that based on JW11 (15.46%), which is also better than the device based on spiro-OMeTAD (17.47%). We hope our research can provide a new perspective in molecular design of organic HTMs for perovskite solar cells.

关键词: Hole-transporting materials, DTP, Perovskite, Photovoltaic performance

Abstract: Hole-transporting materials play a vital role in terms of the performance of perovskite solar cells (PSCs). The dithieno[3,2-b:2',3'-d]pyrrole (DTP), an S,N-heterocyclic building block, has been proved to be desirable for molecular design of hole-transporting materials in PSCs. We developed an asymmetrically substituted DTP small-molecule (JW12) and a reference compound (JW11). The asymmetrical structure of JW12 leads to different absorption properties and electron distribution. The device in a planar n-i-p architecture using JW12 shows a much higher PCE (18.07%) than that based on JW11 (15.46%), which is also better than the device based on spiro-OMeTAD (17.47%). We hope our research can provide a new perspective in molecular design of organic HTMs for perovskite solar cells.

Key words: Hole-transporting materials, DTP, Perovskite, Photovoltaic performance