Secondary crystal growth for efficient planar perovskite solar cells in ambient atmosphere

Lingling Zheng, Lixin Xiao, Yuanhao Wang, Hongxing Yang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

3 Citations (Scopus)


Significant progress has been made in perovskite solar cells by various effective film-forming methods. Solution-process methods for the perovskite film appropriate under ambient conditions are desired to be explored for the practical industrialization. Here, a secondary crystal growth strategy is developed for the fabrication of perovskite film in ambient atmosphere. By this method, the conversion from PbI2to CH3NH3PbI3on the planar substrate can be completed, overcoming the limitation of standard sequential deposition. After secondary growth, high-quality crystals are obtained and compact densely to form a pinhole-free film. Exceeding 17% of power conversion efficiency is achieved for planar CH3NH3PbI3devices by controlling the reaction time of two stages carefully. This method can be easily controlled, reproduced and performed in the ambient, which meets the industrial requirements for highly efficient, low cost planar perovskite solar cells.
Original languageEnglish
Pages (from-to)119-125
Number of pages7
JournalOrganic Electronics: physics, materials, applications
Publication statusPublished - 1 Jul 2018


  • Ambient atmosphere
  • Pin-hole free film
  • Planar perovskite solar cell
  • Secondary crystal growth

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry
  • Electrical and Electronic Engineering


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