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

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Abstract

Methylammonium-mediated phase-evolution behavior of FA1-x MAx PbI3 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.

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Journal

Journal ID (iso-abbrev): Angew. Chem. Int. Ed. Engl.

Title: Angewandte Chemie (International ed. in English)

Publisher: Wiley-Blackwell

ISSN (Electronic): 1521-3773

ISSN (Print): 1433-7851

Publication date (Electronic): May 19 2017

Affiliations

[1 ] Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, P.R. China.

[2 ] School of Engineering, Brown University, Providence, RI, 02912, USA.

[3 ] Qingdao University of Science and Technology, Qingdao, 266042, P.R. China.

[4 ] Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem, 91904, Israel.

Article

DOI: 10.1002/anie.201704188

PubMed ID: 28524450

SO-VID: 6c1b1238-0fb7-4d21-81e5-8df0969358cd

History

Keywords: crystal growth,hybrid perovskites,solar cells,thin films

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Keywords: crystal growth, hybrid perovskites, solar cells, thin films

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