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Size dependence of luminescence decay process in CsPbBr3 nanocrystals.
- Source :
-
Journal of Applied Physics . 2/28/2024, Vol. 135 Issue 8, p1-7. 7p. - Publication Year :
- 2024
-
Abstract
- Lead halide perovskite nanocrystals (NCs) have superior luminescence properties compared to classical semiconductor NCs and they are considered promising materials for next-generation emitters. In this work, we measured the size and temperature dependence of the luminescence decay curve in CsPbBr 3 NCs. To reproduce the experimental results, a simple model including one and two-phonon transitions between the exciton fine structures is introduced. It is found that the temperature dependence of the decay rates in small NCs is better reproduced by the two-phonon model rather than by the one-phonon model. However, the one-phonon process becomes more important for large NCs as the bright-dark splitting decreases. [ABSTRACT FROM AUTHOR]
- Subjects :
- *LUMINESCENCE
*LEAD halides
*NANOCRYSTALS
Subjects
Details
- Language :
- English
- ISSN :
- 00218979
- Volume :
- 135
- Issue :
- 8
- Database :
- Academic Search Index
- Journal :
- Journal of Applied Physics
- Publication Type :
- Academic Journal
- Accession number :
- 175797281
- Full Text :
- https://doi.org/10.1063/5.0190753