Effects of electric field and Coulomb interaction on the interband transitions of InAs self-assembled quantum dots: A study by modulation reflectance spectroscopy

Wen-Hao Chang*, T. M. Hsu, C. C. Huang, N. T. Yeh, J. I. Chyi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

We employ the conventional electroreflectance techniques to investigate the electric field effects on the interband transitions of InAs quantum dots (QDs) in a p-i-n diode. The electric field induced energy shift reveals an asymmetric quantum-confined Stark effect, which indicates that the QDs have a nonzero built-in dipole moment. Secondly, electron-filling reflectance was applied to investigate the Coulomb charge effects on the interband transitions of InAs QDs embedded in a charge tunable p+-n structure. Effects of Pauli blocking and many-body Coulomb interactions on QDs are observed and discussed.

Original languageEnglish
Pages (from-to)89-92
Number of pages4
JournalPhysica Status Solidi (B) Basic Research
Volume224
Issue number1
DOIs
StatePublished - Mar 2001

Keywords

  • 72.40.+w
  • 73.21.La
  • 73.63.Kv
  • 78.67.Hc
  • S7.12

Fingerprint Dive into the research topics of 'Effects of electric field and Coulomb interaction on the interband transitions of InAs self-assembled quantum dots: A study by modulation reflectance spectroscopy'. Together they form a unique fingerprint.

Cite this