TY - JOUR
T1 - Surface Instability of Sn-Based Hybrid Perovskite Thin Film, CH3NH3SnI3
T2 - The Origin of Its Material Instability
AU - Lee, Young Mi
AU - Park, Jinwoo
AU - Yu, Byung Deok
AU - Hong, Suklyun
AU - Jung, Min Cherl
AU - Nakamura, Masakazu
N1 - Publisher Copyright:
Copyright © 2018 American Chemical Society.
PY - 2018/5/3
Y1 - 2018/5/3
N2 - To understand the instability of Sn-based perovskite, CH3NH3SnI3, photoelectron spectroscopy with synchrotron radiation and theoretical calculations, such as density functional theory and ab initio molecular dynamics, were performed. Findings from this experimental and theoretical study highlight the crucial changes of surface-chemical states, the broken chemical bondings in Sn-I, and the depletion of a CH3-NH3+ cation on the surface region. The material instability origin of Sn-based perovskite can be explained by the chemical state instability in the surface.
AB - To understand the instability of Sn-based perovskite, CH3NH3SnI3, photoelectron spectroscopy with synchrotron radiation and theoretical calculations, such as density functional theory and ab initio molecular dynamics, were performed. Findings from this experimental and theoretical study highlight the crucial changes of surface-chemical states, the broken chemical bondings in Sn-I, and the depletion of a CH3-NH3+ cation on the surface region. The material instability origin of Sn-based perovskite can be explained by the chemical state instability in the surface.
UR - http://www.scopus.com/inward/record.url?scp=85046285499&partnerID=8YFLogxK
U2 - 10.1021/acs.jpclett.8b00494
DO - 10.1021/acs.jpclett.8b00494
M3 - Article
C2 - 29667412
AN - SCOPUS:85046285499
SN - 1948-7185
VL - 9
SP - 2293
EP - 2297
JO - Journal of Physical Chemistry Letters
JF - Journal of Physical Chemistry Letters
IS - 9
ER -