Abstract
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 language | American English |
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Pages (from-to) | 7674-7678 |
Number of pages | 5 |
Journal | Angewandte Chemie - International Edition |
Volume | 56 |
Issue number | 26 |
DOIs | |
State | Published - 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
Keywords
- crystal growth
- hybrid perovskites
- solar cells
- thin films