Degradation changes in the crystal and electronic structure of lead iodide perovskite

Abstract

The degradation of CH₃NH₃PbI₃ powder and films following exposure to air and X-ray radiation was investigated using X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy. Our findings revealed significant differences in the states of PbI₂ and PbO between the films and the powder, as indicated by the energy positions of the Pb 4f and C 1s peaks. Additionally, a reduction in both the mass and size of the crystals suggests ongoing degradation processes.

Author (co-authors)
First name Last name Institutional affiliation E-mail Phone number ORCID ID Academic status, position Institution address Author contribution(s) Institutional affiliation
Karbivskyy
Volodymyr
karb@imp.kiev.ua
0000-0003-0412-2788
Doctor of Science, Professor, Head of Department
36 Academician Vernadsky Boulevard, UA-03142 Kyiv, Ukraine
Resources
Supervision
G.V. Kurdyumov Institute for Metal Physics NAS of Ukraine
Svitlana
Smolyak
sssmolyak@gmail.com
0000-0002-5403-4092
Ph.D. in Physics and Mathematics, Senior Researcher
36 Academician Vernadsky Boulevard, UA-03142 Kyiv, Ukraine
Investigation
Writing – Original Draft Preparation
G.V. Kurdyumov Institute for Metal Physics NAS of Ukraine
Arsen
Soroka
arssoroka@ukr.net
Ph.D. in Physics and Mathematics, Senior Researcher
36 Academician Vernadsky Boulevard, UA-03142 Kyiv, Ukraine
Visualization
G.V. Kurdyumov Institute for Metal Physics NAS of Ukraine
Nazar
Shvachko
nazarii1999@gmail.com
36 Academician Vernadsky Boulevard, UA-03142 Kyiv, Ukraine
Investigation
Writing – Original Draft Preparation
G.V. Kurdyumov Institute for Metal Physics NAS of Ukraine
Oleksii
Ivanov
ivanov@knu.ua
Kyiv, Hetmana Pavla Skoropadskoho Street 12
Investigation
National Taras Shevchenko University of Kyiv