GaAsSb/GaAs band alignment evaluation for long-wave photonic applications

Shane Johnson, C. Z. Guo, S. Chaparro, Yu G. Sadofyev, J. Wang, Yu Cao, N. Samal, J. Xu, S. Q. Yu, D. Ding, Yong-Hang Zhang

Research output: Contribution to journalArticle

39 Citations (Scopus)

Abstract

The GaAsSb/GaAs conduction band alignment is determined to be almost flat (weak type-I) in the 0.3 Sb mole fraction neighborhood where 1300nm emission is observed. Based on photoluminescence measurements and modeling the bandgap bowing parameter of pseudomorphic GaAsSb on GaAs is determined to be -2.0 eV with the bowing distributed 45% to the conduction band. Using these parameters the GaAsSb band edge energies are determined over the 0.0 to 0.5 Sb mole fraction range. The effect of band alignment on electron-hole overlap and wavelength extension is discussed.

Original languageEnglish (US)
Pages (from-to)521-525
Number of pages5
JournalJournal of Crystal Growth
Volume251
Issue number1-4
DOIs
StatePublished - Apr 2003

Fingerprint

Bending (forming)
Conduction bands
planetary waves
Photonics
conduction bands
alignment
photonics
evaluation
Photoluminescence
Energy gap
photoluminescence
Wavelength
Electrons
wavelengths
gallium arsenide
energy

Keywords

  • A3. Molecular beam epitaxy
  • B1. Antimonides
  • B2. Semiconducting III-V materials

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

GaAsSb/GaAs band alignment evaluation for long-wave photonic applications. / Johnson, Shane; Guo, C. Z.; Chaparro, S.; Sadofyev, Yu G.; Wang, J.; Cao, Yu; Samal, N.; Xu, J.; Yu, S. Q.; Ding, D.; Zhang, Yong-Hang.

In: Journal of Crystal Growth, Vol. 251, No. 1-4, 04.2003, p. 521-525.

Research output: Contribution to journalArticle

Johnson, S, Guo, CZ, Chaparro, S, Sadofyev, YG, Wang, J, Cao, Y, Samal, N, Xu, J, Yu, SQ, Ding, D & Zhang, Y-H 2003, 'GaAsSb/GaAs band alignment evaluation for long-wave photonic applications', Journal of Crystal Growth, vol. 251, no. 1-4, pp. 521-525. https://doi.org/10.1016/S0022-0248(02)02294-7
Johnson, Shane ; Guo, C. Z. ; Chaparro, S. ; Sadofyev, Yu G. ; Wang, J. ; Cao, Yu ; Samal, N. ; Xu, J. ; Yu, S. Q. ; Ding, D. ; Zhang, Yong-Hang. / GaAsSb/GaAs band alignment evaluation for long-wave photonic applications. In: Journal of Crystal Growth. 2003 ; Vol. 251, No. 1-4. pp. 521-525.
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AU - Cao, Yu

AU - Samal, N.

AU - Xu, J.

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