Generation of interface states due to quantum-dot growth in Au/GaAs Schottky Diode structures

W. Choi, H. Nam, J. Lee, B. Yu, J. Song, H. Yang, A. Chovet

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

Abstract

We investigated the low-frequency excess electrical noise characteristics of Au/GaAs Shottky diodes with and without self-assembled InAs quantum-dot layer grown by molecular beam epitaxy. The noise intensity shows 1/f behavior and non-quadratic current dependences. The current dependence is explained by the generation of interface states increasing toward the conduction band edge, in the diodes with quantum-dot layer, utilizing the model of random walk of electrons involving interface states. The extracted energy distributions of the interface states for the diodes with and without quantum-dot layer, are presented.

Original languageEnglish
Title of host publicationNOISE AND FLUCTUATIONS
Subtitle of host publication18th International Conference on Noise and Fluctuations - ICNF 2005
Pages109-112
Number of pages4
DOIs
StatePublished - 25 Aug 2005
EventNOISE AND FLUCTUATIONS: 18th International Conference on Noise and Fluctuations - ICNF 2005 - Salamanca, Spain
Duration: 19 Sep 200523 Sep 2005

Publication series

NameAIP Conference Proceedings
Volume780
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

ConferenceNOISE AND FLUCTUATIONS: 18th International Conference on Noise and Fluctuations - ICNF 2005
Country/TerritorySpain
CitySalamanca
Period19/09/0523/09/05

Keywords

  • GaAs
  • InAs
  • Interface states
  • Low-frequency noise
  • Quantum-dots
  • Random walk
  • Schottky diodes

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