Epitaxial Electrodeposition of Methylammonium Lead Iodide Perovskites
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 -textured Au and  and  single-crystal Au substrates. The epitaxial relationships for the MAPbI3 films are MAPbI3(001)||PbO2(100)⟨001⟩ and MAPbI3(110)||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.
J. A. Koza et al., "Epitaxial Electrodeposition of Methylammonium Lead Iodide Perovskites," Chemistry of Materials, vol. 28, no. 1, pp. 399-405, American Chemical Society (ACS), Jan 2016.
The definitive version is available at http://dx.doi.org/10.1021/acs.chemmater.5b04524
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)
Article - Journal
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