Report
Complex diffusion-based kinetics of photoluminescence in semiconductor nanoplatelets
| العنوان: | Complex diffusion-based kinetics of photoluminescence in semiconductor nanoplatelets |
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| المؤلفون: | Kurilovich, Aleksandr A., Mantsevich, Vladimir N., Stevenson, Keith J., Chechkin, Aleksei V., Palyulin, Vladimir V. |
| المصدر: | Phys. Chem. Chem. Phys., 2020, 22, 24686-24696 |
| سنة النشر: | 2021 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Mesoscale and Nanoscale Physics, Condensed Matter - Statistical Mechanics |
| الوصف: | We present a diffusion-based simulation and theoretical models for explanation of photoluminescence (PL) emission intensity in semiconductor nanoplatelets. It is shown that the shape of PL intensity curves can be reproduced by the interplay of recombination, diffusion and trapping of excitons. The emission intensity at short times is purely exponential and is defined by recombination. At long times it is governed by the release of excitons from surface traps and is characterized by a power-law tail. We show that the crossover from one limit to another is controlled by diffusion properties. This intermediate region exhibits a rich behaviour depending on the value of diffusivity. Proposed approach reproduces all the features of experimental curves measured for different nanoplatelet systems. Comment: 11 pages, 10 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1039/D0CP03744C |
| URL الوصول: | http://arxiv.org/abs/2101.06623 |
| رقم الانضمام: | edsarx.2101.06623 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1039/D0CP03744C |
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