Photoemission Studies on the Environmental Stability of Thermal Evaporated MAPbI 3 Thin Films and MAPbBr 3 Single Crystals

Ke Wang, Benjamin Ecker and Yongli Gao
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Ke Wang: Department of Physics and Astronomy, University of Rochester, Rochester, NY 14627, USA
Benjamin Ecker: Department of Physics and Astronomy, University of Rochester, Rochester, NY 14627, USA
Yongli Gao: Department of Physics and Astronomy, University of Rochester, Rochester, NY 14627, USA

Energies, 2021, vol. 14, issue 7, 1-18

Abstract: Hybrid organic inorganic perovskites have been considered as a potential candidate for the next generational solar cell due to their outstanding optoelectronic properties and rapid development in recent years. However, the biggest challenge to prevent them from massive commercial use is their long-term stability. Photoemission spectroscopy has been widely used to investigate properties of the perovskites, which provide critical insights to better understand the degradation mechanisms. In this article, we review mainly our photoemission studies on the degradation processes of perovskite thin films and single crystals with different environmental factors, such as gases, water, and light by monitoring changes of chemical composition and electronic structure. These studies on the effects by different environmental parameters are discussed for the understanding of the stability issues and the possible solutions.

Keywords: photoemission spectroscopy (PES); perovskite thin films; perovskite single crystals; environmental stability (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
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