Optical switching of quantum states inside self-assembled quantum dots

G. Muñoz-Matutano*, B. Alén, J. Martínez-Pastor, L. Seravalli, P. Frigeri, S. Franchi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


Photoluminescence and excitation of photoluminescence spectroscopy have been performed for two kinds of single InAs self-assembled quantum dots grown on GaAs. The presence of unintentional impurities (donors and acceptors) offers the possibility to switch from negative to positively charged excitons by selectively exciting impurity related optical transitions.

Original languageEnglish
Pages (from-to)494-499
Number of pages6
JournalSuperlattices and Microstructures
Issue number5-6
Publication statusPublished - May 2008
Externally publishedYes


  • Charge transfer
  • Impurity related absorption
  • Single QD spectroscopy
  • Trion recombination


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