journal article·2019-07-01Open access

Thermal stability of CsPbBr3 perovskite as revealed by in situ transmission electron microscopy

Chao Zhang, Joseph F. S. Fernando, Konstantin L. Firestein, Joel E. von Treifeldt, Dumindu Siriwardena, Xiaosheng Fang, Dmitri Golberg

APL Materials· Volume 7· Issue 7

Abstract

The thermal stability of all-inorganic halide perovskites is their key advantage over organic/hybrid halide perovskites. Here, in situ high-resolution transmission electron microscopy (HRTEM) was used to directly investigate crystallography dynamics of a CsPbBr3 perovskite at high temperature (up to 690 K). In high vacuum TEM conditions (∼10−5 Pa), CsPbBr3 nanocrystals possessed superb stability at temperatures below 690 K. By sealing the crystals in amorphous carbon, their melting and solidification processes were directly observed at temperatures of 840 K and 838 K, respectively. This study should be valuable for future perovskite-containing solar cells, lasers, light-emitting diodes, and photodetectors working at high temperatures.
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Research context

OpenAlex topics: Perovskite Materials and Applications · Solid-state spectroscopy and crystallography · Optical properties and cooling technologies in crystalline materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

School of Chemistry, Physics and Mechanical Engineering, Science and Engineering Faculty, Queensland University of Technology (QUT) 1 , 2 George Street, Brisbane, Queensland 4000, Australia

Department of Materials Science, Fudan University 2 , Shanghai 200433, People’s Republic of China

International Centre for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS) 3 , 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan

Funding

Science and Technology Commission of Shanghai Municipality · Australian Research Council · School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology

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