Investigation of Thermally Induced Degradation in CH3NH3PbI3 Perovskite Solar Cells using In-situ Synchrotron Radiation Analysis

• DOI: 10.1038/s41598-017-04690-w
• Publication Date: 2017-06-29T07:33:51Z
• Authors: Nam-Koo Kim; Young Hwan Min; Seokhwan Noh; Eunkyung Cho; Gitaeg Jeong; Minho Joo; Seh-Won Ahn; Jeong Soo Lee; Seongtak Kim; Kyuwook Ihm; Hyungju Ahn; Yoonmook Kang; Hae-Seok Lee; Donghwan Kim
• Keywords: Degradation

Abstract In this study, we employ a combination of various in-situ surface analysis techniques to investigate the thermally induced degradation processes in MAPbI 3 perovskite solar cells (PeSCs) as function temperature under air-free conditions (no moisture and oxygen). Through comprehensive approach that combines grazing-incidence wide-angle X-ray diffraction (GIWAXD) high-resolution photoelectron spectroscopy (HR-XPS) measurements, confirm structure film changes an intermediate phase decomposes CH I, NH , PbI 2 after both short (20 min) exposure heat stress at 100 °C long (>1 hour) 80 °C. Moreover, observe clearly orientation + organic cations with respect substrate phase, which might be linked directly thermal perovskites. These results provide important progress towards improved understanding mechanisms materials will facilitate improvements design fabrication better stability.