Mostrar registro simples

dc.contributor.authorMaltez, Rogério Luispt_BR
dc.contributor.authorRibeiro, Euripedespt_BR
dc.contributor.authorCarvalho Junior, Wilsonpt_BR
dc.contributor.authorUgarte, Danielpt_BR
dc.contributor.authorMedeiros-Ribeiro, Gilbertopt_BR
dc.date.accessioned2014-05-31T02:06:44Zpt_BR
dc.date.issued2003pt_BR
dc.identifier.issn0021-8979pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/95826pt_BR
dc.description.abstractWe report on the growth of quantum dot (QD) layers of InAsP alloys buried in GaAs by low-pressure metalorganic chemical vapor deposition. Ternary QDs were obtained by the addition of a PH3 flux during the InAs QD growth, exhibiting recombination energies lying between those of InAs and InP QDs. The electronic properties of these QDs, as evaluated by photoluminescence spectroscopy, could be tailored by varying both the growth rate and the PH3 flux for a constant AsH3 flux. The morphology of these QDs was investigated by transmission electron microscopy from which the formation of an InAsP ternary alloy QDs was inferred. Based on electron microscopy results, the fundamental role of As incorporation on the morphology of and on the defect nucleation associated to InAsP QDs could be then evaluated. From this optical–structural combined analysis, we were able to identify the growth conditions that produce good quality InAsP QDs embedded in GaAs.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofJournal of applied physics. Melville. Vol. 94, no. 5 (Sept. 2003), p. 3051-3056pt_BR
dc.rightsOpen Accessen
dc.subjectArseneto de galiopt_BR
dc.subjectSemicondutores iii-vpt_BR
dc.subjectCompostos de indiopt_BR
dc.subjectMocvdpt_BR
dc.subjectNucleaçãopt_BR
dc.subjectFotoluminescênciapt_BR
dc.subjectMicroscopia eletrônica de transmissãopt_BR
dc.titleControlling alloy composition of InAsP self-assembled quantum dots embedded in GaAspt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb000397206pt_BR
dc.type.originEstrangeiropt_BR


Thumbnail
   

Este item está licenciado na Creative Commons License

Mostrar registro simples