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Type: Artigo de periódico
Title: Spatial ordering in InP/InGaP nanostructures
Author: Bortoleto, JRR
Gutierrez, HR
Cotta, MA
Bettini, J
Cardoso, LP
de Carvalho, MMG
Abstract: We report the observation of a spatially-ordered bidimensional array of self-assembled InP quantum dots grown on slightly In-rich InGaP layers. The alignment of InP dots is observed along [100] and [010] directions. This effect is enhanced when 2degrees off vicinal substrates are used; it is also strongly dependent on growth temperature. Our results suggest that the density and size of CuPt-type atomically ordered regions as well as compositional modulation of InGaP layers play an important role on the spatial alignment of InP/InGaP quantum dots. (C) 2003 American Institute of Physics.
Country: EUA
Editor: Amer Inst Physics
Rights: aberto
Identifier DOI: 10.1063/1.1572553
Date Issue: 2003
Appears in Collections:Unicamp - Artigos e Outros Documentos

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