Composition tunable inorganic Lead Halide Perovskites microstructures synthesized by single and two-step chemical vapor deposition methods

Mohammad Kamal Hossain, Pengfei Guo, Johnny C. Ho, Kin Man Yu

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

抄録

High quality all inorganic metal halide CsPb(Cl, Br, I)3 with emissions covering from blue to red (415 to 710 nm) were grown using a two-step chemical vapor deposition (CVD) process. CsPbCl3(1-x)Br3x(CsPbBr3(1-x)I3x) alloys were formed first by depositing square like microplates (∼5-25 μm) of CsPbCl3 followed by the growth of a top layer of CsPbBr3 (CsPbI3,) for different deposition time. Photoluminescence studies with front and back illumination revealed that complete interdiffusion of the halide ions occurs during the growth of the second layer. Structural, chemical and optical properties of these alloy were directly compared to those grown by a single step CVD method with emphasis on their crystalline quality, composition uniformity and stability. In this new two-step CVD process the composition of the alloys can be easily controlled by the thickness of the individual layer and only optimization of the growth of the individual halide materials is required. This offers a simple, reproducible route to realize high quality inorganic halide perovskite alloys by avoiding the tedious process optimization for different alloy composition.

本文言語英語
ホスト出版物のタイトル2019 Compound Semiconductor Week, CSW 2019 - Proceedings
出版社Institute of Electrical and Electronics Engineers Inc.
ISBN(電子版)9781728100807
DOI
出版ステータス出版済み - 5 2019
外部発表はい
イベント2019 Compound Semiconductor Week, CSW 2019 - Nara, 日本
継続期間: 5 19 20195 23 2019

出版物シリーズ

名前2019 Compound Semiconductor Week, CSW 2019 - Proceedings

会議

会議2019 Compound Semiconductor Week, CSW 2019
国/地域日本
CityNara
Period5/19/195/23/19

All Science Journal Classification (ASJC) codes

  • 電子工学および電気工学
  • 産業および生産工学
  • 電子材料、光学材料、および磁性材料
  • 材料化学
  • 原子分子物理学および光学

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