Optical properties of type-I and II quantum dots

• Autor(a) principal: Iikawa,F.
• Data de Publicação: 2004
• Outros Autores: Godoy,M. P. F., Nakaema,M. K. K., Brasil,M. J. S. P., Maialle,M. Z., Degani,M. A., Ribeiro,E., Medeiros-Ribeiro,G., Carvalho Jr.,W., Brum,J. A.
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Brazilian Journal of Physics
• Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332004000400004

This paper focuses on recent results on the optical properties of self-assembled quantum dots involving type-I InGaAs/GaAs and type-II InP/GaAs interfaces. In the first part, we focus on the InGaAs/GaAs quantum dots, that were used to study the influence of a two-dimensional electron gas on the optical emission of single quantum dots. In the second part, we present the results on type-II InP/GaAs quantum dots. In this system, we observed an experimental evidence indicating that the model used to interpret the blue shift of the type-II quantum well optical emission cannot be applied to type-II quantum dots.