Type I - type II band alignment of GaAsSb/InAs/GaAs quantum dot heterostructure influenced by dot size and strain reducing layer composition
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F13%3A00391944" target="_blank" >RIV/68378271:_____/13:00391944 - isvavai.cz</a>
Alternative codes found
RIV/68407700:21230/13:00201671
Result on the web
<a href="http://dx.doi.org/10.1088/0022-3727/46/9/095103" target="_blank" >http://dx.doi.org/10.1088/0022-3727/46/9/095103</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/0022-3727/46/9/095103" target="_blank" >10.1088/0022-3727/46/9/095103</a>
Alternative languages
Result language
angličtina
Original language name
Type I - type II band alignment of GaAsSb/InAs/GaAs quantum dot heterostructure influenced by dot size and strain reducing layer composition
Original language description
The aim of this work is to redshift quantum dot (QD) photoluminescence (PL) towards telecommunication wavelengths by engineering the MOVPE prepared structure of InAs/GaAs QDs covered by GaAsSb strain reducing layer. Our results proved that the type I ortype II band alignment can be controlled by both, GaAsSb composition and QD size. Maintaining type I heterostructure is important for high luminescence efficiency and emission wavelength stability of QD structure. The simulation of electron structure inInAs QD covered with GaAsSb strain reducing layer as well as experimental results suggest the importance of increasing QD size for obtaining a longer wavelength PL from type I heterostructure. The PL maximum wavelength 1371 nm was achieved for the MOVPEprepared type I QD structure with 14% of Sb in GaAsSb. This type of structure exhibits seven times higher PL intensity, twice narrower PL peak and 85 meV red shift in comparison to similarly prepared QDs covered by GaAs.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BM - Solid-state physics and magnetism
OECD FORD branch
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Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2013
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Physics D-Applied Physics
ISSN
0022-3727
e-ISSN
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Volume of the periodical
46
Issue of the periodical within the volume
9
Country of publishing house
GB - UNITED KINGDOM
Number of pages
6
Pages from-to
"095103-1"-"095103-9"
UT code for WoS article
000314819500011
EID of the result in the Scopus database
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