Optical and Scanning Probe Identification of Electronic Structure and Phases in CH3NH3PbBr3 Crystal
- 등재 SCIE, SCOPUS
- 발행기관 American Chemical Society
- 발행년도 2017
- URI http://www.dcollection.net/handler/ewha/000000146950
- 본문언어 영어
- Published As http://dx.doi.org/10.1021/acs.jpcc.7b06765
- 저작권 이화여자대학교 논문은 저작권에 의해 보호받습니다.
초록/요약
Hybrid lead halide perovskite possesses attractive properties and outstanding performance. The electronic structure of hybrid lead halide perovskite single crystal can be used to comprehend its intrinsic properties. In this study, the crystal structure of CH3NH3PbBr3 perovskite crystal was elucidated by transmission electron microscopy. Phonon modes and CH3NH3 + rocking modes were analyzed. Band gaps of the crystal were obtained by temperature-dependent Raman scattering spectroscopy and photoluminescence measurement. Surface potential measurement for a (001) plane exhibited a work function of the material and other phases of PbBr2 and CH3NH3Br. From experimentally determined values, an electronic structure of CH3NH3PbBr3 was built. It showed a p-type characteristic. © 2017 American Chemical Society.
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