Low‐Energy Electron‐Induced Transformations in Organolead Halide Perovskite

Milosavljević, Aleksandar R.; Huang, Weixin; Sadhu, Subha; Ptasinska, Sylwia

doi:10.1002/ange.201605013

Title: Low‐Energy Electron‐Induced Transformations in Organolead Halide Perovskite

Journal Article · Wed Jun 29 00:00:00 EDT 2016 · Angewandte Chemie

DOI:https://doi.org/10.1002/ange.201605013· OSTI ID:1400572

^[1]; Huang, Weixin ^[2]; Sadhu, Subha ^[3]; Ptasinska, Sylwia ^[4]

Radiation Laboratory University of Notre Dame Notre Dame IN 46556 USA, SOLEIL, l'Orme des Merisiers St. Aubin, BP48 91192 Gif sur Yvette Cedex France, Institute of Physics Belgrade University of Belgrade Pregrevica 118 11080 Belgrade Serbia
Radiation Laboratory University of Notre Dame Notre Dame IN 46556 USA, Department of Chemistry and Biochemistry University of Notre Dame Notre Dame IN 46556 USA
Radiation Laboratory University of Notre Dame Notre Dame IN 46556 USA
Radiation Laboratory University of Notre Dame Notre Dame IN 46556 USA, Department of Physics University of Notre Dame Notre Dame IN 46556 USA

Abstract Methylammonium lead iodide perovskite (MAPbI ₃ ), a prototype material for potentially high‐efficient and low‐cost organic–inorganic hybrid perovskite solar cells, has been investigated intensively in recent years. A study of low‐energy electron‐induced transformations in MAPbI ₃ is presented, performed by combining controlled electron‐impact irradiation with X‐ray photoelectron spectroscopy and scanning electron microscopy. Changes were observed in both the elemental composition and the morphology of irradiated MAPbI ₃ thin films as a function of the electron fluence for incident energies from 4.5 to 60 eV. The results show that low‐energy electrons can affect structural and chemical properties of MAPbI ₃ . It is proposed that the transformations are triggered by the interactions with the organic part of the material (methylammonium), resulting in the MAPbI ₃ decomposition and aggregation of the hydrocarbon layer.

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Sponsoring Organization:: USDOE

Grant/Contract Number:: FC02-04ER15533; NDRL 5113

OSTI ID:: 1400572

Journal Information:: Angewandte Chemie, Journal Name: Angewandte Chemie Vol. 128 Journal Issue: 34; ISSN 0044-8249

Publisher:: Wiley Blackwell (John Wiley & Sons)Copyright Statement

Country of Publication:: Germany

Language:: English

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