On the Role of Cs4PbBr6 Phase in the Luminescence Performance of Bright CsPbBr3 Nanocrystals
| Autor: | Václav Čuba, Kateřina Děcká, Jan Král, Martin Nikl, Adela Sucha, V. Jarý, Eva Mihokova, Ivo Jakubec, Vladimir Babin |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
General Chemical Engineering Energy transfer scintillation detectors 02 engineering and technology 010402 general chemistry 01 natural sciences nanocrystals Phase (matter) luminescence General Materials Science QD1-999 Reaction conditions Scintillation business.industry Drop (liquid) Radioluminescence 021001 nanoscience & nanotechnology 0104 chemical sciences Chemistry lead halide perovskites Nanocrystal Optoelectronics 0210 nano-technology business Luminescence |
| Zdroj: | Nanomaterials, Vol 11, Iss 1935, p 1935 (2021) Nanomaterials Volume 11 Issue 8 |
| ISSN: | 2079-4991 |
| Popis: | CsPbBr3 nanocrystals have been identified as a highly promising material for various optoelectronic applications. However, they tend to coexist with Cs4PbBr6 phase when the reaction conditions are not controlled carefully. It is therefore imperative to understand how the presence of this phase affects the luminescence performance of CsPbBr3 nanocrystals. We synthesized a mixed CsPbBr3-Cs4PbBr6 sample, and compared its photo- and radioluminescence properties, including timing characteristics, to the performance of pure CsPbBr3 nanocrystals. The possibility of energy transfer between the two phases was also explored. We demonstrated that the presence of Cs4PbBr6 causes significant drop in radioluminescence intensity of CsPbBr3 nanocrystals, which can limit possible future applications of Cs4PbBr6-CsPbBr3 mixtures or composites as scintillation detectors. |
| Databáze: | OpenAIRE |
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