期刊
SCIENCE BULLETIN
卷 64, 期 10, 页码 698-704出版社
ELSEVIER
DOI: 10.1016/j.scib.2019.04.016
关键词
Lead halide perovskite; Solvothermal method; Single crystal cuboid; Lasing; TRPL
资金
- National Natural Science Foundation of China [11674023, 51331002, 51622205, 61675027, 61505010, 51502018, 51525202, 51432005]
- 111 Project [B170003]
- National Key Research and Development Program of China [2016YFA0202703]
- Beijing Natural Science Foundation [4181004, 4182080]
- Thousand Talents Program of China [U1404619]
As a direct bandgap semiconductor, organic-inorganic lead halide perovskite (MAPbX(3), MA = CH3NH3, X = Cl, Br, I) have been considered as promising materials for laser due to their excellent optoelectronic properties. The perovskite materials with 1D and 2D shapes were widely prepared and studied for Fabry-Perot mode and whispering-gallery-mode (WGM) microcavities, but cuboid-shape is rarely reported. In this work, we successfully fabricated single crystal cuboid-shaped MAPbBr(3) perovskite with different morphologies, named microcuboid-MAPbBr(3) (M-MAPbBr(3)) and multi-step-MAPbBr(3) (MS-MAPbBr(3)), via solvothermal method. Furthermore, the as-prepared crystals' excitonic recombination lifetime under different pumping energy density was studied by time-resolved photoluminescence (TRPL). Based on controllable morphology and remarkable lasing properties, these cuboid shaped single crystal perovskite could be a promising candidate for small laser, and other optoelectronic devices. (C) 2019 Science China Press. Published by Elsevier B.V. and Science China Press. All rights reserved.
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