Employing Lead Thiocyanate Additive to Reduce the Hysteresis and Boost the Fill Factor of Planar Perovskite Solar Cells

Weijun Ke, Chuanxiao Xiao, Changlei Wang, Bayrammurad Saparov, Hsin Sheng Duan, Dewei Zhao, Zewen Xiao, Philip Schulz, Steven P. Harvey, Weiqiang Liao, Weiwei Meng, Yue Yu, Alexander J. Cimaroli, Chun Sheng Jiang, Kai Zhu, Mowafak Al-Jassim, Guojia Fang, David B. Mitzi, Yanfa Yan

Research output: Contribution to journalArticlepeer-review

497 Scopus Citations

Abstract

Lead thiocyanate in the perovskite precursor can increase the grain size of a perovskite thin film and reduce the conductivity of the grain boundaries, leading to perovskite solar cells with reduced hysteresis and enhanced fill factor. A planar perovskite solar cell with grain boundary and interface passivation achieves a steady-state efficiency of 18.42%.
Original languageAmerican English
Pages (from-to)5214-5221
Number of pages8
JournalAdvanced Materials
Volume28
Issue number26
DOIs
StatePublished - 2016

NREL Publication Number

  • NREL/JA-5K00-66441

Keywords

  • grain boundary passivation
  • hysteresis
  • interface passivation
  • perovskite solar cells

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