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

Result code in 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>

Result on the web

—

DOI - Digital Object Identifier

—

Result language

angličtina

Original language name

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

Original language description

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

Czech name

Fotoluminiscence a magnetofotoluminiscence vertikálně korelovaných kvantových teček InAs/GaAs

Czech description

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

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BM - Solid-state physics and magnetism

OECD FORD branch

—

Project

—

Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2007

Confidentiality

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

Name of the periodical

Physica E

ISSN

1386-9477

e-ISSN

—

Volume of the periodical

36

Issue of the periodical within the volume

1

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

8

Pages from-to

106

UT code for WoS article

—

EID of the result in the Scopus database

—