Non-equilibrium electron distributions and electron-longitudinal optical phonon scattering rates in wurtzite GaN

Kong-Thon Tsen, D. K. Ferry, A. Botchkarev, B. Sverdlov, A. Salvador, H. Morkoç

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Non-equilibrium electron distributions and electron-longitudinal optical phonon scattering rates in wurtzite GaN have been studied by subpicosecond time-resolved Raman spectroscopy. Our experimental results show that for electron densities n ≥ 5 × 1017cm-3, the non-equilibrium electron distributions in wurtzite GaN can be very well described by Fermi-Dirac distribution functions with the effective electron temperature much higher than the lattice temperature. In addition, we find that the total electron-longitudinal optical phonon scattering rate in GaN is about one order of magnitude larger than that in GaAs. We attribute this enormous increase in the electron-longitudinal optical phonon scattering rate to the much larger ionicity in GaN.

Original languageEnglish (US)
Pages (from-to)171-174
Number of pages4
JournalJournal of Electronic Materials
Volume27
Issue number4
StatePublished - Apr 1998

Fingerprint

Phonon scattering
electron distribution
wurtzite
Electrons
scattering
electrons
Raman spectroscopy
distribution functions
electron energy
Electron temperature
Distribution functions
Carrier concentration
temperature
Temperature

Keywords

  • GaN
  • Phonon
  • Raman

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Materials Science(all)
  • Electronic, Optical and Magnetic Materials
  • Physics and Astronomy (miscellaneous)

Cite this

Tsen, K-T., Ferry, D. K., Botchkarev, A., Sverdlov, B., Salvador, A., & Morkoç, H. (1998). Non-equilibrium electron distributions and electron-longitudinal optical phonon scattering rates in wurtzite GaN. Journal of Electronic Materials, 27(4), 171-174.

Non-equilibrium electron distributions and electron-longitudinal optical phonon scattering rates in wurtzite GaN. / Tsen, Kong-Thon; Ferry, D. K.; Botchkarev, A.; Sverdlov, B.; Salvador, A.; Morkoç, H.

In: Journal of Electronic Materials, Vol. 27, No. 4, 04.1998, p. 171-174.

Research output: Contribution to journalArticle

Tsen, K-T, Ferry, DK, Botchkarev, A, Sverdlov, B, Salvador, A & Morkoç, H 1998, 'Non-equilibrium electron distributions and electron-longitudinal optical phonon scattering rates in wurtzite GaN', Journal of Electronic Materials, vol. 27, no. 4, pp. 171-174.
Tsen, Kong-Thon ; Ferry, D. K. ; Botchkarev, A. ; Sverdlov, B. ; Salvador, A. ; Morkoç, H. / Non-equilibrium electron distributions and electron-longitudinal optical phonon scattering rates in wurtzite GaN. In: Journal of Electronic Materials. 1998 ; Vol. 27, No. 4. pp. 171-174.
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AU - Salvador, A.

AU - Morkoç, H.

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