Electrical and optical characterization of energy states in self-assembled InAs/GaAs quantum dots with size distribution

Sung Ho Hwang, Jung Il Lee, Jin Dong Song, Won Jun Choi, Il Ki Han, Soo Kyung Chang

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

We report effects of the size and the energy state distribution on the electrical and optical properties in self-assembled InAs quantum dots. The results of characteristics measured using atomic force microscopy, photoluminescence and dark current are analyzed by way of a simulation assuming a Gaussian distribution in size and related energies. The samples investigated in this study are InAs/GaAs quantum dot infrared photodetector structures with an AlGaAs blocking layer grown by molecular beam epitaxy at different growth modes.

Original languageEnglish
Pages (from-to)1023-1028
Number of pages6
JournalKey Engineering Materials
Volume277-279
Issue numberI
Publication statusPublished - 2005 Dec 1

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Electron energy levels
Semiconductor quantum dots
Dark currents
Gaussian distribution
Photodetectors
Molecular beam epitaxy
Atomic force microscopy
Photoluminescence
Electric properties
Optical properties
Infrared radiation
gallium arsenide
indium arsenide

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Hwang, Sung Ho ; Lee, Jung Il ; Song, Jin Dong ; Choi, Won Jun ; Han, Il Ki ; Chang, Soo Kyung. / Electrical and optical characterization of energy states in self-assembled InAs/GaAs quantum dots with size distribution. In: Key Engineering Materials. 2005 ; Vol. 277-279, No. I. pp. 1023-1028.
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Electrical and optical characterization of energy states in self-assembled InAs/GaAs quantum dots with size distribution. / Hwang, Sung Ho; Lee, Jung Il; Song, Jin Dong; Choi, Won Jun; Han, Il Ki; Chang, Soo Kyung.

In: Key Engineering Materials, Vol. 277-279, No. I, 01.12.2005, p. 1023-1028.

Research output: Contribution to journalArticle

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AU - Lee, Jung Il

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AU - Han, Il Ki

AU - Chang, Soo Kyung

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