Terahertz Wave Absorption Property of all Mixed Organic-Inorganic Hybrid Perovskite Thin Film MA(Sn, Pb)(Br, I) 3 Fabricated by Sequential Vacuum Evaporation Method

All mixed hybrid perovskite (MA(Sn, Pb)(Br,I) ) thin film was fabricated by sequential vacuum evaporation method. To optimize the first layer with PbBr and SnI , we performed different annealing treatments. Further, MA(Sn, Pb)(Br, I) thin film was synthesized on the optimized first layer by evaporat...

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Published inFrontiers in chemistry Vol. 9; p. 753141
Main Authors Maeng, Inhee, Tanaka, Hiroshi, Mag-Usara, Valynn Katrine, Nakajima, Makoto, Nakamura, Masakazu, Jung, Min-Cherl
Format Journal Article
LanguageEnglish
Published Switzerland Frontiers Media S.A 16.09.2021
Subjects
atomic structure
chemical state
Chemistry
MA(Sn, Pb)(Br I)3
sequential vacuum evaporation
THz-wave absorption
atomic structure
sequential vacuum evaporation
THz-wave absorption
MA(Sn, Pb)(Br I)3
chemical state
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Summary:All mixed hybrid perovskite (MA(Sn, Pb)(Br,I) ) thin film was fabricated by sequential vacuum evaporation method. To optimize the first layer with PbBr and SnI , we performed different annealing treatments. Further, MA(Sn, Pb)(Br, I) thin film was synthesized on the optimized first layer by evaporating MAI and post-annealing. The formed hybrid perovskite thin film exhibited absorptions at 1.0 and 1.7 THz with small absorbance (<10%). Moreover, no chemical and structural defect-incorporated absorption was found. In this study, the possibility of changing terahertz absorption frequency through the mixture of metal cations (Sn and Pb ) and halogen anions (Br and I ) was verified.
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Reviewed by:Jun Yin, King Abdullah University of Science and Technology, Saudi Arabia
Sudhanshu Shukla, University of Luxembourg, Luxembourg
This article was submitted to Physical Chemistry and Chemical Physics, a section of the journal Frontiers in Chemistry
Edited by:Rene A Nome, State University of Campinas, Brazil
ISSN:2296-2646
2296-2646
DOI:10.3389/fchem.2021.753141