Optically Induced Charge Exchange in ZnO-Based Composite Structures with Embedded CsPbBr3 Nanocrystals

The introduction of CsPbBr 3 nanocrystals into a porous ZnO matrix leads to the appearance of a photoconductivity response in the visible spectral range. Measurement of the spectral dependences of the absorption, photoluminescence (PL), and photoconductivity showed that the shape and position of the...

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Published inSemiconductors (Woodbury, N.Y.) Vol. 53; no. 6; pp. 814 - 818
Main Authors Drozdov, K. A., Krylov, I. V., Chizhov, A. S., Rumyantseva, M. N., Ryabova, L. I., Khokhlov, D. R.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.06.2019
Springer Nature B.V
Subjects
Charge exchange
Composite Semiconductors
Composite structures
Current carriers
Magnetic Materials
Magnetism
Microcrystalline
Nanocrystalline
Nanocrystals
Photoconductivity
Photoluminescence
Physics
Physics and Astronomy
Porous
Porous media
Rangefinding
Zinc oxide
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Summary:The introduction of CsPbBr 3 nanocrystals into a porous ZnO matrix leads to the appearance of a photoconductivity response in the visible spectral range. Measurement of the spectral dependences of the absorption, photoluminescence (PL), and photoconductivity showed that the shape and position of the PL peak are associated with defects in CsPbBr 3 . Analysis of the photoconductivity relaxation kinetics shows the possibility of accelerating the recombination of photoexcited charge carriers by more than an order of magnitude. The mechanisms responsible for this effect are discussed.
ISSN:1063-7826
1090-6479
DOI:10.1134/S1063782619060058