Intercalation Crystallization of Phase-Pure ..alpha..-HC(NH2)2PbI3 upon Microstructurally Engineered PbI2 Thin Films for Planar Perovskite Solar Cells

Kai Zhu, Mengjin Yang, Yuanyuan Zhou, Joonsuh Kwun, Onkar Game, Yixin Zhao, Shuping Pang, Nitin Padture

Research output: Contribution to journalArticlepeer-review

42 Scopus Citations

Abstract

The microstructure of the solid-PbI2 precursor thin film plays an important role in the intercalation crystallization of the formamidinium lead triiodide perovskite (α-HC(NH2)2PbI3). It is shown that microstructurally engineered PbI2 thin films with porosity and low crystallinity are the most favorable for conversion into uniform-coverage, phase-pure α-HC(NH2)2PbI3 perovskite thin films. Planar perovskite solar cells fabricated using these thin films deliver power conversion efficiency (PCE) up to 13.8%.

Original languageAmerican English
Pages (from-to)6265-6270
Number of pages6
JournalNanoscale
Volume8
Issue number12
DOIs
StatePublished - 28 Mar 2016

Bibliographical note

Publisher Copyright:
© The Royal Society of Chemistry 2016.

NREL Publication Number

  • NREL/JA-5900-65108

Keywords

  • microstructures
  • planar perovskite solar cells
  • precursor thin films

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