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Trap States Passivation and Photoactivation in Wide Band Gap Inorganic Perovskites Semiconductors

Abstract

CsPbCl3 is a promising material to construct future short wavelength optoelectronic devices based on inorganic perovskites semiconductor. In this study, CsPbCl3 microcrystals were synthesized by a solution phase process. It was found that the photoluminescence (PL) intensities of CsPbCl3 microcrystals can increase up to five times under persistent irradiation of UV light without peak shifting, accompanied with an increased absorption coefficient above band gap and decreased PL lifetime. This PL enhancement is a reversible with excitation light switching on and off. The photoactivation process of CsPbCl3 microcrystals is attributed to the passivation of the trap states.

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Publication details

The article was received on 09 Jul 2018, accepted on 13 Sep 2018 and first published on 14 Sep 2018


Article type: Paper
DOI: 10.1039/C8CP04298E
Citation: Phys. Chem. Chem. Phys., 2018, Accepted Manuscript
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    Trap States Passivation and Photoactivation in Wide Band Gap Inorganic Perovskites Semiconductors

    S. Chu, S. Pan and G. Li, Phys. Chem. Chem. Phys., 2018, Accepted Manuscript , DOI: 10.1039/C8CP04298E

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