Acceleration of the Decay of Excitons in an Organometallic Perovskite Film on the Crystalline Silicon Surface

It has been found that the optical properties and characteristics of exciton photoluminescence in thin organometallic perovskite layers, which are promising for application in high-efficiency solar cells, change when these layers are deposited on a crystalline silicon (c-Si) substrate. The observed...

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Bibliographic Details
Published in:JETP letters 2019-11, Vol.110 (9), p.592-594
Main Authors: Sekerbayev, K. S., Taurbayev, Ye. T., Saraeva, I. N., Kudryashov, S. I., Ionin, A. A., Timoshenko, V. Yu
Format: Article
Language:English
Subjects:
Acceleration
Atomic
Biological and Medical Physics
Biophysics
Condensed Matter
Crystal structure
Crystallinity
Decay
Electric fields
Excitons
Field ionization
Glass substrates
Heterostructures
Molecular
Optical and Plasma Physics
Optical properties
Oxide coatings
Particle and Nuclear Physics
Perovskites
Photoluminescence
Photovoltaic cells
Physics
Physics and Astronomy
Quantum Information Technology
Silicon
Silicon substrates
Solar cells
Solid State Physics
Spintronics
Thin films
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Summary:It has been found that the optical properties and characteristics of exciton photoluminescence in thin organometallic perovskite layers, which are promising for application in high-efficiency solar cells, change when these layers are deposited on a crystalline silicon (c-Si) substrate. The observed shift of the photoluminescence band toward higher photon energies and a decrease in the lifetime of photoluminescence compared to layers deposited on a glass substrate with conducting metal oxide coating have been explained by the effect of an electric field that is formed in an organometallic perovskite/c-Si heterostructure and leads to the field ionization and the decay of excitons in the organometallic perovskite layer.
ISSN:0021-3640
1090-6487
DOI:10.1134/S0021364019210094