التفاصيل البيبلوغرافية
| العنوان: |
Size dependence of luminescence decay process in CsPbBr3 nanocrystals. |
| المؤلفون: |
Suzuki, Yura, Yamamoto, Sekika |
| المصدر: |
Journal of Applied Physics; 2/28/2024, Vol. 135 Issue 8, p1-7, 7p |
| مصطلحات موضوعية: |
LUMINESCENCE, LEAD halides, NANOCRYSTALS |
| مستخلص: |
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] |
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| قاعدة البيانات: |
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