Surface Instability of Sn-Based Hybrid Perovskite Thin Film, CH3NH3SnI3: The Origin of Its Material Instability

Young Mi Lee, Jinwoo Park, Byung Deok Yu, Suklyun Hong, Min Cherl Jung, Masakazu Nakamura

Research output: Contribution to journalArticlepeer-review

46 Scopus citations

Abstract

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.

Original languageEnglish
Pages (from-to)2293-2297
Number of pages5
JournalJournal of Physical Chemistry Letters
Volume9
Issue number9
DOIs
StatePublished - 3 May 2018

Fingerprint

Dive into the research topics of 'Surface Instability of Sn-Based Hybrid Perovskite Thin Film, CH3NH3SnI3: The Origin of Its Material Instability'. Together they form a unique fingerprint.

Cite this