Optical and Scanning Probe Identification of Electronic Structure and Phases in CH3NH3PbBr3 Crystal

Hye Ri Jung; Gee Yeong Kim; Bich Phuong Nguyen; Hye Jin Jin; William Jo; Trang Thi Thu Nguyen; Seokhyun Yoon; Won Seok Woo; Chang Won Ahn; Shinuk Cho; Ill Won Kim

doi:10.1021/acs.jpcc.7b06765

Optical and Scanning Probe Identification of Electronic Structure and Phases in CH₃NH₃PbBr₃ Crystal

Hye Ri Jung, Gee Yeong Kim, Bich Phuong Nguyen, Hye Jin Jin, William Jo, Trang Thi Thu Nguyen, Seokhyun Yoon, Won Seok Woo, Chang Won Ahn, Shinuk Cho, Ill Won Kim

Department of Physics

Research output: Contribution to journal › Article › peer-review

24 Scopus citations

Abstract

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.

Original language	English
Pages (from-to)	21930-21934
Number of pages	5
Journal	Journal of Physical Chemistry C
Volume	121
Issue number	40
DOIs	https://doi.org/10.1021/acs.jpcc.7b06765
State	Published - 12 Oct 2017

Bibliographical note

Publisher Copyright:
© 2017 American Chemical Society.

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10.1021/acs.jpcc.7b06765

Cite this

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title = "Optical and Scanning Probe Identification of Electronic Structure and Phases in CH3NH3PbBr3 Crystal",

abstract = "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.",

author = "Jung, {Hye Ri} and Kim, {Gee Yeong} and Nguyen, {Bich Phuong} and Jin, {Hye Jin} and William Jo and {Thu Nguyen}, {Trang Thi} and Seokhyun Yoon and Woo, {Won Seok} and Ahn, {Chang Won} and Shinuk Cho and Kim, {Ill Won}",

note = "Publisher Copyright: {\textcopyright} 2017 American Chemical Society.",

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doi = "10.1021/acs.jpcc.7b06765",

language = "English",

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T1 - Optical and Scanning Probe Identification of Electronic Structure and Phases in CH3NH3PbBr3 Crystal

AU - Jung, Hye Ri

AU - Kim, Gee Yeong

AU - Nguyen, Bich Phuong

AU - Jin, Hye Jin

AU - Jo, William

AU - Thu Nguyen, Trang Thi

AU - Yoon, Seokhyun

AU - Woo, Won Seok

AU - Ahn, Chang Won

AU - Cho, Shinuk

AU - Kim, Ill Won

PY - 2017/10/12

Y1 - 2017/10/12

N2 - 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.

AB - 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.

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