Urbach-Martienssen tails in a wurtzite GaN epilayer

S. Chichibu; T. Mizutani; T. Shioda; H. Nakanishi; T. Deguchi; T. Azuhata; T. Sota; S. Nakamura

doi:10.1063/1.119196

Urbach-Martienssen tails in a wurtzite GaN epilayer

S. Chichibu^*, T. Mizutani, T. Shioda, H. Nakanishi, T. Deguchi, T. Azuhata, T. Sota, S. Nakamura

^*Corresponding author for this work

School of Advanced Science and Engineering

Research output: Contribution to journal › Article › peer-review

62 Citations (Scopus)

Abstract

Effects of an interaction between the electronic and lattice systems on the optical spectra of a wurtzite GaN epilayer were investigated. The exponentially increasing absorption tail was well explained as an Urbach-Martienssen tail, giving the characteristic phonon energy of 30 meV. The result indicates that few longitudinal optical phonons contribute to the exciton-phonon coupling even at room temperature.

Original language	English
Pages (from-to)	3440-3442
Number of pages	3
Journal	Applied Physics Letters
Volume	70
Issue number	25
DOIs	https://doi.org/10.1063/1.119196
Publication status	Published - 1997 Jun 23

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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abstract = "Effects of an interaction between the electronic and lattice systems on the optical spectra of a wurtzite GaN epilayer were investigated. The exponentially increasing absorption tail was well explained as an Urbach-Martienssen tail, giving the characteristic phonon energy of 30 meV. The result indicates that few longitudinal optical phonons contribute to the exciton-phonon coupling even at room temperature.",

author = "S. Chichibu and T. Mizutani and T. Shioda and H. Nakanishi and T. Deguchi and T. Azuhata and T. Sota and S. Nakamura",

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T1 - Urbach-Martienssen tails in a wurtzite GaN epilayer

AU - Chichibu, S.

AU - Mizutani, T.

AU - Shioda, T.

AU - Nakanishi, H.

AU - Deguchi, T.

AU - Azuhata, T.

AU - Sota, T.

AU - Nakamura, S.

PY - 1997/6/23

Y1 - 1997/6/23

N2 - Effects of an interaction between the electronic and lattice systems on the optical spectra of a wurtzite GaN epilayer were investigated. The exponentially increasing absorption tail was well explained as an Urbach-Martienssen tail, giving the characteristic phonon energy of 30 meV. The result indicates that few longitudinal optical phonons contribute to the exciton-phonon coupling even at room temperature.

AB - Effects of an interaction between the electronic and lattice systems on the optical spectra of a wurtzite GaN epilayer were investigated. The exponentially increasing absorption tail was well explained as an Urbach-Martienssen tail, giving the characteristic phonon energy of 30 meV. The result indicates that few longitudinal optical phonons contribute to the exciton-phonon coupling even at room temperature.

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Urbach-Martienssen tails in a wurtzite GaN epilayer

Abstract

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