Zwitterionic-Surfactant-Assisted Room-Temperature Coating of Efficient Perovskite Solar Cells

Kuan Liu, Qiong Liang, Minchao Qin, Dong Shen, Hang Yin, Zhiwei Ren, Yaokang Zhang, Hengkai Zhang, Patrick W.K. Fong, Zehan Wu, Jiaming Huang, Jianhua Hao, Zijian Zheng, Shu Kong SO, Chun Sing Lee, Xinhui Lu*, Gang Li*

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

143 Citations (Scopus)


We demonstrated a multifunctional zwitterionic surfactant incorporated into perovskite ink to facilitate room-temperature meniscus coating of high-quality perovskite films. We in situ investigated the perovskite crystallization pathway and emphasized the surfactant's synergistic role in film construction, crystallization kinetics modulation, defect passivation, and moisture barrier protection. The universality and versatility of this strategy not only enabled higher efficiencies over 22% (0.04 cm2 active area) and 21% (0.8 cm2) across perovskite compositions and device architectures but also significantly enhanced the stability under different aging conditions.

Original languageEnglish
Pages (from-to)2404-2425
Number of pages22
Issue number11
Publication statusPublished - 18 Nov 2020

Scopus Subject Areas

  • Energy(all)

User-Defined Keywords

  • crystallization kinetics
  • defect passivation
  • meniscus coating
  • perovskite solar cells
  • room-temperature process
  • zwitterionic surfactant


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