Complex diffusion-based kinetics of photoluminescence in semiconductor nanoplatelets
- We present a diffusion-based simulation and theoretical models for explanation of the photoluminescence (PL) emission intensity in semiconductor nanoplatelets. It is shown that the shape of the 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. The proposed approach reproduces all the features of experimental curves measured for different nanoplatelet systems.
| Author details: | Aleksandr A. KurilovichORCiD, Vladimir Mantsevich, Keith J. StevensonORCiD, Aleksei V. ChechkinORCiDGND, V. V. PalyulinORCiD |
|---|---|
| DOI: | https://doi.org/10.1039/d0cp03744c |
| ISSN: | 1463-9076 |
| ISSN: | 1463-9084 |
| Pubmed ID: | https://pubmed.ncbi.nlm.nih.gov/33103714 |
| Title of parent work (English): | Physical chemistry, chemical physics : a journal of European Chemical Societies |
| Publisher: | Royal Society of Chemistry |
| Place of publishing: | Cambridge |
| Publication type: | Article |
| Language: | English |
| Date of first publication: | 2020/10/19 |
| Publication year: | 2020 |
| Release date: | 2023/01/02 |
| Volume: | 22 |
| Issue: | 42 |
| Number of pages: | 11 |
| First page: | 24686 |
| Last Page: | 24696 |
| Funding institution: | Russian Science FoundationRussian Science Foundation (RSF) [18-72-10002] |
| Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie |
| DDC classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
| Peer review: | Referiert |
| Publishing method: | Open Access / Hybrid Open-Access |
| License (German): |  CC-BY - Namensnennung 4.0 International |
