Quantum dots with indirect band gap: power-law photoluminescence decay

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F14%3A00439123" target="_blank" >RIV/68378271:_____/14:00439123 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61389013:_____/14:00439123

Výsledek na webu

<a href="http://dx.doi.org/10.1260/1708-5284.11.5.507" target="_blank" >http://dx.doi.org/10.1260/1708-5284.11.5.507</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1260/1708-5284.11.5.507" target="_blank" >10.1260/1708-5284.11.5.507</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Quantum dots with indirect band gap: power-law photoluminescence decay

Popis výsledku v původním jazyce

In this work the experimental effect of a slow decay of photoluminescence is studied theoretically in the case of quantum dots with an indirect energy band gap. The slow decay of the photoluminescence is considered as decay in time of the luminescence intensity, following the excitation of the quantum dot sample electronic system by a short optical pulse. In the presented theoretical treatment the process is studied as a single dot property. The inter-valley deformation potential interaction of the excited conduction band electrons with lattice vibrations is considered in the self-consistent Born approximation to the electronic self-energy. The theory is built on the non-equilibrium electronic quantum transport theory. The time dependence of the photoluminescence decay is estimated upon using a simple effective mass model. The numerical calculation of the considered model shows the power-law time characteristics of the photoluminescence decay in the long-time limit of the decay.

Název v anglickém jazyce

Quantum dots with indirect band gap: power-law photoluminescence decay

Popis výsledku anglicky

In this work the experimental effect of a slow decay of photoluminescence is studied theoretically in the case of quantum dots with an indirect energy band gap. The slow decay of the photoluminescence is considered as decay in time of the luminescence intensity, following the excitation of the quantum dot sample electronic system by a short optical pulse. In the presented theoretical treatment the process is studied as a single dot property. The inter-valley deformation potential interaction of the excited conduction band electrons with lattice vibrations is considered in the self-consistent Born approximation to the electronic self-energy. The theory is built on the non-equilibrium electronic quantum transport theory. The time dependence of the photoluminescence decay is estimated upon using a simple effective mass model. The numerical calculation of the considered model shows the power-law time characteristics of the photoluminescence decay in the long-time limit of the decay.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

World Journal of Engineering

ISSN

1708-5284

e-ISSN

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Svazek periodika

11

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

6

Strana od-do

507-512

Kód UT WoS článku

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EID výsledku v databázi Scopus

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