Electrooptical properties of GaNAs/GaAs multiple quantum well structures

Jia Ren Lee, Yo Yu Chen, Chien Rong Lu, Wei I. Lee, Shih Chang Lee

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The electrooptical properties of the GaNAs/GaAs multiple quantum well structures have been studied using the photoreflectance spectroscopy from 20 K to room temperature. Above the band gap energy of GaAs, Franz-Keldysh oscillations were observed. The period of the Franz-Keldysh oscillations decreased slightly with decreasing temperature, and indicated that the corresponding space charge distribution varied slowly with temperature. The modulated quantum well transition features were observed below the band gap energy of GaAs. A matrix transfer algorithm was used to calculate the quantum well subband energies numerically. The band gap energy and the electron effective mass of the GaNAs/GaAs system were adjusted to obtain the subband energies to best fit the observed quantum well transition energies.

Original languageEnglish
Pages (from-to)248-251
Number of pages4
JournalMaterials Science and Engineering B: Solid-State Materials for Advanced Technology
Volume100
Issue number3
DOIs
Publication statusPublished - 2003 Jul 25

Fingerprint

Semiconductor quantum wells
quantum wells
Energy gap
oscillations
Charge distribution
Electron transitions
Electric space charge
Temperature
charge distribution
energy
space charge
Spectroscopy
temperature
gallium arsenide
Electrons
room temperature
matrices
spectroscopy
electrons

Keywords

  • GaNAs/GaAs
  • Photoreflectance
  • Quantum well

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Electrooptical properties of GaNAs/GaAs multiple quantum well structures. / Lee, Jia Ren; Chen, Yo Yu; Lu, Chien Rong; Lee, Wei I.; Lee, Shih Chang.

In: Materials Science and Engineering B: Solid-State Materials for Advanced Technology, Vol. 100, No. 3, 25.07.2003, p. 248-251.

Research output: Contribution to journalArticle

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