Temperature dpendent carrier dynamics of InAs/GaAs quantum dots probed by terahertz time-domain spectroscopy

S. J. Oh, I. H. Maeng, H. M. Kim, N. K. Cho, J. D. Song, W. J. Choi, J. I. Lee, J. H. Son

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

We have utilized the terahertz time-domain spectroscopy to investigate the temperature dependent carrier dynamics n-type modulation-doped InAs/GaAs quantum dots and estimated the total number of electrons captured by the quantum dots from 10 K to 290 K. The absorption of the sample with quantum dots decrease monotonically as the temperature is lowered because quantum dots capture more free carriers at lower temperatures, while the absorption of the sample without quantum dots is the highest at 100 K because the electron mobility is the highest at that temperature.

Original languageEnglish
Title of host publicationIRMMW-THz2007 - Conference Digest of the Joint 32nd International Conference on Infrared and Millimetre Waves, and 15th International Conference on Terahertz Electronics
Pages769-770
Number of pages2
StatePublished - 2007
EventJoint 32nd International Conference on Infrared and Millimetre Waves, and 15th International Conference on Terahertz Electronics, IRMMW-THz2007 - Cardiff, United Kingdom
Duration: 3 Sep 20077 Sep 2007

Publication series

NameIRMMW-THz2007 - Conference Digest of the Joint 32nd International Conference on Infrared and Millimetre Waves, and 15th International Conference on Terahertz Electronics

Conference

ConferenceJoint 32nd International Conference on Infrared and Millimetre Waves, and 15th International Conference on Terahertz Electronics, IRMMW-THz2007
Country/TerritoryUnited Kingdom
CityCardiff
Period3/09/077/09/07

Keywords

  • Carrier dynamics
  • Quantum dots
  • Terahertz
  • Terahertz time-domain spectroscopy

Fingerprint

Dive into the research topics of 'Temperature dpendent carrier dynamics of InAs/GaAs quantum dots probed by terahertz time-domain spectroscopy'. Together they form a unique fingerprint.

Cite this