View : 67 Download: 0

Exotic optoelectronic behaviors in CH3NH3PbCl3perovskite single crystals: Co-existence of free and bound excitons with structural phase transitions

Title
Exotic optoelectronic behaviors in CH3NH3PbCl3perovskite single crystals: Co-existence of free and bound excitons with structural phase transitions
Authors
Jung H.R.Bari M.Cho Y.Kim Y.S.Nguyen T.T.T.Kim Y.Yoon S.Jo Y.C.Kim J.H.Yuldashev S.Ye Z.-G.Jo W.
Ewha Authors
조윌렴윤석현
SCOPUS Author ID
조윌렴scopus; 윤석현scopus
Issue Date
2021
Journal Title
Applied Physics Letters
ISSN
0003-6951JCR Link
Citation
Applied Physics Letters vol. 118, no. 14
Publisher
American Institute of Physics Inc.
Indexed
SCIE; SCOPUS WOS scopus
Document Type
Article
Abstract
CH3NH3PbCl3 (MAPbCl3) perovskite single crystal is attractive for the ultra-violet detector due to its wide bandgap and comparative stability over iodine or bromine systems. Single crystals of MAPbCl3 perovskite are also intriguing owing to its generic type of materials for fundamental photophysical properties and excitonic behaviors for its use in devices. Furthermore, recent progress using crystal-based device fabrication will shed light on semiconducting devices like III-V compounds. In this study, a structurally well-defined crystal is grown and examined to reveal free and bound excitonic behaviors depending on the structural phase transition. We classified the free and bound excitonic behaviors by temperature- and power density-dependent photoluminescence and optical transmission spectra. The single emission peak located at 3.1 eV and blueshift depending on decreasing the temperature is attributed to the radiative recombination of the free exciton at the cubic and the tetragonal phases, whereas the several peaks from the bound excitonic transition are just revealed under 120 K of the orthorhombic phase. We also determined the work function distribution and band structures with excitonic bound states via Kelvin probe force microscopy. The optoelectronic properties resulted in the excitonic behaviors can be a fundamental approach for the construction of perovskite-based optoelectronic and photonic applications. © 2021 Author(s).
Show the fulltext
DOI
10.1063/5.0043551
Appears in Collections:
자연과학대학 > 물리학전공 > Journal papers
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE