Title

Epitaxial Electrodeposition of Methylammonium Lead Iodide Perovskites

Abstract

An electrochemical/chemical route is introduced to deposit both textured and epitaxial films of methylammonium lead iodide (MAPbI3) perovskites. The perovskite films are produced by chemical conversion of lead dioxide films that have been electrodeposited as either textured or epitaxial films onto [111]-textured Au and [100] and [111] single-crystal Au substrates. The epitaxial relationships for the MAPbI3 films are MAPbI3(001)[010]||PbO2(100)⟨001⟩ and MAPbI3(110)[111]||PbO2(100)⟨001⟩ regardless of the Au substrate orientation, because the in-plane order of the converted film is controlled by the epitaxial PbO2 precursor film. The textured and epitaxial MAPbI3 films both have trap densities lower than and photoluminescence intensities higher than those of polycrystalline films produced by spin coating.

Department(s)

Chemistry

Keywords and Phrases

Electrodeposition; Electrodes; Epitaxial films; Lead compounds; Lead oxide; Perovskite; Single crystals; Substrates; Chemical conversions; Epitaxial electrodeposition; Epitaxial relationships; In-plane ordering; Perovskite films; Photoluminescence intensities; Polycrystalline film; Substrate orientation; Gold

International Standard Serial Number (ISSN)

0897-4756

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2016 American Chemical Society (ACS), All rights reserved.

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