Numerical Simulation of Blinking Quantum dot Based on Temperature Dependence 3-Dimensional Levy Random Walk
Blinking statistics of quantum dot has attracted much attraction in recent years. Various experiments were conducted and various theories have been given to explain this phenomenon. However, the problem is not yet resolved. The weak temperature dependence of the power law parameters have complicated...
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Sumy State University
2011-01-01
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| Series: | Журнал нано- та електронної фізики |
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| Online Access: | http://jnep.sumdu.edu.ua/download/numbers/2011/1,%20Part%205/articles/jnep_2011_V3_N1(Part5)_0888-0893.pdf |
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| author | Anita Sharma M.N. Bapat |
| author_facet | Anita Sharma M.N. Bapat |
| author_sort | Anita Sharma |
| collection | DOAJ |
| description | Blinking statistics of quantum dot has attracted much attraction in recent years. Various experiments were conducted and various theories have been given to explain this phenomenon. However, the problem is not yet resolved. The weak temperature dependence of the power law parameters have complicated the phenomena. We have simulated the blinking statistics of quantum dot based on the random walk model. We have shown that three-dimensional biased Levy random walk of electrons, the bias being the Columbic interaction between electrons and ionized atoms can explain the observed experimental results. We have simulated the blinking properties of quantum dots in a broad temperature range (10-300 K). The distributions exhibit power law behavior for a wide range of temperature, but the power law parameter increases marginally with temperature. The trend of change is independent of the size of the quantum dots as confirmed from the simulation. |
| format | Article |
| id | doaj-art-38d84777cbab4aa19b72d55ffe804bfe |
| institution | OA Journals |
| issn | 2077-6772 |
| language | English |
| publishDate | 2011-01-01 |
| publisher | Sumy State University |
| record_format | Article |
| series | Журнал нано- та електронної фізики |
| spelling | doaj-art-38d84777cbab4aa19b72d55ffe804bfe2025-08-20T02:38:59ZengSumy State UniversityЖурнал нано- та електронної фізики2077-67722011-01-0131888893Numerical Simulation of Blinking Quantum dot Based on Temperature Dependence 3-Dimensional Levy Random WalkAnita SharmaM.N. BapatBlinking statistics of quantum dot has attracted much attraction in recent years. Various experiments were conducted and various theories have been given to explain this phenomenon. However, the problem is not yet resolved. The weak temperature dependence of the power law parameters have complicated the phenomena. We have simulated the blinking statistics of quantum dot based on the random walk model. We have shown that three-dimensional biased Levy random walk of electrons, the bias being the Columbic interaction between electrons and ionized atoms can explain the observed experimental results. We have simulated the blinking properties of quantum dots in a broad temperature range (10-300 K). The distributions exhibit power law behavior for a wide range of temperature, but the power law parameter increases marginally with temperature. The trend of change is independent of the size of the quantum dots as confirmed from the simulation.http://jnep.sumdu.edu.ua/download/numbers/2011/1,%20Part%205/articles/jnep_2011_V3_N1(Part5)_0888-0893.pdfQuantum dotLevy statisticsRandom walkFluorescence. |
| spellingShingle | Anita Sharma M.N. Bapat Numerical Simulation of Blinking Quantum dot Based on Temperature Dependence 3-Dimensional Levy Random Walk Журнал нано- та електронної фізики Quantum dot Levy statistics Random walk Fluorescence. |
| title | Numerical Simulation of Blinking Quantum dot Based on Temperature Dependence 3-Dimensional Levy Random Walk |
| title_full | Numerical Simulation of Blinking Quantum dot Based on Temperature Dependence 3-Dimensional Levy Random Walk |
| title_fullStr | Numerical Simulation of Blinking Quantum dot Based on Temperature Dependence 3-Dimensional Levy Random Walk |
| title_full_unstemmed | Numerical Simulation of Blinking Quantum dot Based on Temperature Dependence 3-Dimensional Levy Random Walk |
| title_short | Numerical Simulation of Blinking Quantum dot Based on Temperature Dependence 3-Dimensional Levy Random Walk |
| title_sort | numerical simulation of blinking quantum dot based on temperature dependence 3 dimensional levy random walk |
| topic | Quantum dot Levy statistics Random walk Fluorescence. |
| url | http://jnep.sumdu.edu.ua/download/numbers/2011/1,%20Part%205/articles/jnep_2011_V3_N1(Part5)_0888-0893.pdf |
| work_keys_str_mv | AT anitasharma numericalsimulationofblinkingquantumdotbasedontemperaturedependence3dimensionallevyrandomwalk AT mnbapat numericalsimulationofblinkingquantumdotbasedontemperaturedependence3dimensionallevyrandomwalk |