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Effects of band-offset on the carrier lifetime in InAs quantum dots on InP substrates

  • Y. D. Jang
  • , N. J. Kim
  • , H. Lee
  • , D. Lee*
  • , S. H. Pyun
  • , W. G. Jeong
  • , J. W. Jang
  • , D. K. Oh
  • , Jin Soo Kim
  • *Corresponding author for this work
  • Chungnam National University
  • Sungkyunkwan University
  • NanoEpi Technologies Corporation
  • Electronics and Telecommunications Research Institute

Research output: Contribution to journalJournal articlepeer-review

Abstract

The carrier lifetime of an InAs/InGaAsP quantum dot (QD) on an InP substrate is measured to be twice that of an InAs/InAlGaAs QD on the same substrate, although the ground-state energy levels and barrier heights of these QDs are comparable. These differences are interpreted in terms of the smaller conduction band-offset in InAs/InGaAsP QDs compared to InAs/InAlGaAs QDs.

Original languageEnglish
Article number096103
JournalJournal of Applied Physics
Volume101
Issue number9
DOIs
StatePublished - 2007

Quacquarelli Symonds(QS) Subject Topics

  • Physics & Astronomy

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