3 years ago

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

Optical and Scanning Probe Identification of Electronic Structure and Phases in CH3NH3PbBr3 Crystal
Ill Won Kim, Bich Phuong Nguyen, Chang Won Ahn, Hye-Jin Jin, Shinuk Cho, Won Seok Woo, Hye Ri Jung, Trang Thi Thu Nguyen, Gee Yeong Kim, Seokhyun Yoon, William Jo
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.

Publisher URL: http://dx.doi.org/10.1021/acs.jpcc.7b06765

DOI: 10.1021/acs.jpcc.7b06765

You might also like
Never Miss Important Research

Researcher is an app designed by academics, for academics. Create a personalised feed in two minutes.
Choose from over 15,000 academics journals covering ten research areas then let Researcher deliver you papers tailored to your interests each day.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.