Chemical Research in Chinese Universities ›› 2023, Vol. 39 ›› Issue (2): 176-186.doi: 10.1007/s40242-023-2327-7

• Review • Previous Articles     Next Articles

‘Radicalize’ the Performance of Perovskite Solar Cells with Radical Compounds

WANG Can1,2,3,4, GAO Peng1,2,3,4   

  1. 1. State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, P. R. China;
    2. Laboratory for Advanced Functional Materials, Xiamen Institute of Rare Earth Materials, Haixi Institute, Chinese Academy of Sciences, Xiamen 361021, P. R. China;
    3. Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare Earth Materials, Chinese Academy of Sciences, Xiamen 361021, P. R. China;
    4. University of Chinese Academy of Sciences, Beijing 100049, P. R. China
  • Received:2022-11-30 Online:2023-04-01 Published:2023-03-16
  • Contact: GAO Peng E-mail:peng.gao@fjirsm.ac.cn
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (Nos. 21975260, 22175180) and the CAS-Iranian Vice Presidency Joint Research Project(2022).

Abstract: Perovskite solar cells(PSCs) have attracted tremendous attention due to their outstanding performance within a short development. Radical molecules with unpaired single electrons have been widely used in energy-related fields, such as organic light-emitting diodes(OLEDs), organic field-effect transistors(OFETs), organic and dye-sensitized solar cells, batteries, thermoelectric conversion devices, etc. However, as far as we know, there has never been a systemic collection and analysis of the application of radical molecules in PSCs. Herein, we summarized the role of the radical molecule on perovskite(passivate trap defects, enhance oxygen stability and make perovskite band-bending) and charge transport layer(improve conductivity and mobility, enhance oxygen stability, modulate work function and decrease by-product generating). Meanwhile, future directions of making full use of radical molecules in improving the performances of PSCs were envisioned.

Key words: Radical molecule, Perovskite solar cell, Unpaired single electron, Modulate WF