About: 1.3 mum emission from InAs/GaAs quantum dots

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	We report here the results of our photoluminescence study of a series of single quantum dot layer structures containing InxGa1–xAs strain reducing layers with different In concentration (from 0 % to 29 %), prepared by low pressure metal organic vapour phase epitaxy. These structures display a strong red shift of photoluminescence maxima from 1.25 mum to 1.45 mum at 300 K with increased In content in the ternary layer. The origin of the observed transitions has been explained using magnetophotoluminescence measurements and photoluminescence measurements for different pumping intensities at low temperature. Optical transition energies were calculated using a simple single-band effective mass model with energydependent effective mass. Comparing the calculated and measured energies, we can determine the thickness of the wetting layer and the sizes of the dots. We report here the results of our photoluminescence study of a series of single quantum dot layer structures containing InxGa1–xAs strain reducing layers with different In concentration (from 0 % to 29 %), prepared by low pressure metal organic vapour phase epitaxy. These structures display a strong red shift of photoluminescence maxima from 1.25 mum to 1.45 mum at 300 K with increased In content in the ternary layer. The origin of the observed transitions has been explained using magnetophotoluminescence measurements and photoluminescence measurements for different pumping intensities at low temperature. Optical transition energies were calculated using a simple single-band effective mass model with energydependent effective mass. Comparing the calculated and measured energies, we can determine the thickness of the wetting layer and the sizes of the dots. (en)
Title	1.3 mum emission from InAs/GaAs quantum dots 1.3 mum emission from InAs/GaAs quantum dots (en)
skos:prefLabel	1.3 mum emission from InAs/GaAs quantum dots 1.3 mum emission from InAs/GaAs quantum dots (en)
skos:notation	RIV/00216224:14310/06:00018456!RIV11-AV0-14310___
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA202/06/0718), P(KJB101630601), Z(MSM0021622410)
http://linked.open...iv/cisloPeriodika	11
http://linked.open...vai/riv/dodaniDat	2011
http://linked.open...aciTvurceVysledku	Hulicius, Eduard Křápek, Vlastimil Humlíček, Josef
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Masarykova univerzita / Přírodovědecká fakulta
http://linked.open...dnocenehoVysledku	510555
http://linked.open...ai/riv/idVysledku	RIV/00216224:14310/06:00018456
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	quantum dots; InAs/GaAs; magnetophotoluminescence (en)
http://linked.open.../riv/klicoveSlovo	InAs/GaAs quantum dots magnetophotoluminescence
http://linked.open...odStatuVydavatele	NL - Nizozemsko
http://linked.open...ontrolniKodProRIV	[A394ABD519D3]
http://linked.open...i/riv/nazevZdroje	physica status solidi (c)
http://linked.open...in/vavai/riv/obor	BM
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	9 (xsd:int)
http://linked.open...vavai/riv/projekt	Quantum dot engineering Morfology of quantum dots and its impact to the electronic structure
http://linked.open...UplatneniVysledku	2006
http://linked.open...v/svazekPeriodika	3
http://linked.open...iv/tvurceVysledku	Hulicius, Eduard Pangrác, Jiří Potemski, Marek Křápek, Vlastimil Humlíček, Josef Hospodková, Alice Kuldová, Karla Oswald, Jiří Melichar, Karel
http://linked.open...n/vavai/riv/zamer	Physical and chemical properties of advanced materials and structures
issn	1610-1642
number of pages	4 (xsd:int)
http://localhost/t...ganizacniJednotka	14310
is http://linked.open...avai/riv/vysledek of	1.3 mum emission from InAs/GaAs quantum dots

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