Methylammonium-Mediated Evolution of Mixed-Organic-Cation Perovskite Thin Films: A Dynamic Composition-Tuning Process

Chongwen Li, Yuanyuan Zhou, Li Wang, Yue Chang, Yingxia Zong, Lioz Etgar, Guanglei Cui*, Nitin P. Padture, Shuping Pang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

55 Scopus citations


Methylammonium-mediated phase-evolution behavior of FA1−xMAxPbI3 mixed-organic-cation perovskite (MOCP) is studied. It is found that by simply enriching the MOCP precursor solutions with excess methylammonium cations, the MOCPs form via a dynamic composition-tuning process that is key to obtaining MOCP thin films with superior properties. This simple chemical approach addresses several key challenges, such as control over phase purity, uniformity, grain size, composition, etc., associated with the solution-growth of MOCP thin films with targeted compositions.

Original languageAmerican English
Pages (from-to)7674-7678
Number of pages5
JournalAngewandte Chemie - International Edition
Issue number26
StatePublished - 19 Jun 2017

Bibliographical note

Funding Information:
Financial support from the International S&T Cooperation Program of China (2015DFG62670), National Natural Science Foundation of China (51672290, 21671196, 61604156), Basic Research Program of Qingdao (15-9-1-17-jch, KJZD-14-38-JCH), the Youth Innovation Promotion Association of CAS (2015167) and the Qingdao Key Lab of Solar Energy Utilization and Energy Storage Technology, and the U.S. National Science Foundation (DMR-1305913 and OIA-1538893) is gratefully acknowledged.

Publisher Copyright:
© 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim


  • crystal growth
  • hybrid perovskites
  • solar cells
  • thin films


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