Fotoluminiscence a magnetofotoluminiscence vertikálně korelovaných kvantových teček InAs/GaAs

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F07%3A00021888" target="_blank" >RIV/00216224:14310/07:00021888 - isvavai.cz</a>

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Photoluminescence and magnetophotoluminescence of vertically stacked InAs/GaAs quantum dot structures

Popis výsledku v původním jazyce

We report on photoluminescence of a series of vertically stacked multilayer quantum dot structures. Our analysis of the data taken at different excitation powers and in the magnetic field up to 24T yields a useful insight into the electronic structure ofthe InAs/GaAs quantum dot structures. The data are compared with results of model electronic structure calculations for flat dots, including the effects of the strain field. The calculations suggest that the difference between the energies of the groundand first excited transitions is mainly determined by the lateral dimensions of the dots. A comparison of the experimental results with the theoretical ones reveals an increase of the dot dimensions (both height and diameter) and a decrease of the aspect ratio (height/diameter) with increasing number of the quantum dot layers. For seven layer samples, the wavelength of 1:3 mm has been achieved. The increase of the thickness of the spacing layers between adjacent dot layers leads to a de

Název v anglickém jazyce

Photoluminescence and magnetophotoluminescence of vertically stacked InAs/GaAs quantum dot structures

Popis výsledku anglicky

We report on photoluminescence of a series of vertically stacked multilayer quantum dot structures. Our analysis of the data taken at different excitation powers and in the magnetic field up to 24T yields a useful insight into the electronic structure ofthe InAs/GaAs quantum dot structures. The data are compared with results of model electronic structure calculations for flat dots, including the effects of the strain field. The calculations suggest that the difference between the energies of the groundand first excited transitions is mainly determined by the lateral dimensions of the dots. A comparison of the experimental results with the theoretical ones reveals an increase of the dot dimensions (both height and diameter) and a decrease of the aspect ratio (height/diameter) with increasing number of the quantum dot layers. For seven layer samples, the wavelength of 1:3 mm has been achieved. The increase of the thickness of the spacing layers between adjacent dot layers leads to a de

Druh

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

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

—

Projekt

—

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2007

Kód důvěrnosti údajů

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

Název periodika

Physica E

ISSN

1386-9477

e-ISSN

—

Svazek periodika

36

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

8

Strana od-do

106

Kód UT WoS článku

—

EID výsledku v databázi Scopus

—