Optically Induced Charge Exchange in ZnO-Based Composite Structures with Embedded CsPbBr3 Nanocrystals
| Autor: | Dmitry Khokhlov, Marina Rumyantseva, K. A. Drozdov, A.S. Chizhov, I. V. Krylov, Ludmila I. Ryabova |
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| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Photoluminescence Materials science business.industry Photoconductivity Composite number 02 engineering and technology Electrostatic induction 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Nanocrystal 0103 physical sciences Optoelectronics Charge carrier 0210 nano-technology business Absorption (electromagnetic radiation) Order of magnitude |
| Zdroj: | Semiconductors. 53:814-818 |
| ISSN: | 1090-6479 1063-7826 |
| DOI: | 10.1134/s1063782619060058 |
| Popis: | The introduction of CsPbBr3 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 CsPbBr3. 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. |
| Databáze: | OpenAIRE |
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