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나노의학 연구단
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Pressure-induced semiconductor-to-metal phase transition of a charge-ordered indium halide perovskite

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Title
Pressure-induced semiconductor-to-metal phase transition of a charge-ordered indium halide perovskite
Author(s)
Jia Lin; Hong Chen; Yang Gao; Yao Cai; Jianbo Jin; Ahmed S. Etman; Joohoon Kang; Teng Lei; Zhenni Lin; Maria C. Folgueras; Li Na Quan; Qiao Kong; Matthew Sherburne; Mark Asta; Junliang Sun; Michael F. Toney; Junqiao Wu; Peidong Yang
Publication Date
2019-11
Journal
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, v.116, no.47, pp.23404 - 23409
Publisher
NATL ACAD SCIENCES
Abstract
Phase transitions in halide perovskites triggered by external stimuli generate significantly different material properties, providing a great opportunity for broad applications. Here, we demonstrate an In-based, charge-ordered (In+/In3+) inorganic halide perovskite with the composition of Cs2In(I)In(III)Cl-6 in which a pressure-driven semiconductor-to-metal phase transition exists. The single crystals, synthesized via a solid-state reaction method, crystallize in a distorted perovskite structure with space group I4/m with a = 17.2604(12) angstrom, c = 11.0113(16) angstrom if both the strong reflections and superstructures are considered. The supercell was further confirmed by rotation electron diffraction measurement. The pressure-induced semiconductor-to-metal phase transition was demonstrated by high-pressure Raman and absorbance spectroscopies and was consistent with theoretical modeling. This type of charge-ordered inorganic halide perovskite with a pressure-induced semiconductor-to-metal phase transition may inspire a range of potential applications © 2019 National Academy of Sciences.
URI
https://pr.ibs.re.kr/handle/8788114/6797
ISSN
0027-8424
Appears in Collections:
Center for Nanomedicine (나노의학 연구단) > Journal Papers
Files in This Item:
201911_Pressure-induced semiconductor-to-metal phase transition of a charge-ordered indium halide perovskite.pdfDownload

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