Urbach-Martienssen tails in a wurtzite GaN epilayer

被引：65

作者：

Chichibu, S

Mizutani, T

Shioda, T

Nakanishi, H

Deguchi, T

Azuhata, T

Sota, T

Nakamura, S

机构：

[1] WASEDA UNIV,DEPT ELECT ELECT & COMP ENGN,SHINJUKU KU,TOKYO 169,JAPAN

[2] NICHIA CHEM IND LTD,DEPT RES & DEV,TOKUSHIMA 774,JAPAN

来源：

APPLIED PHYSICS LETTERS | 1997年 / 70卷 / 25期

关键词：

D O I：

10.1063/1.119196

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

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. (C) 1997 American Institute of Physics.

引用

页码：3440 / 3442

页数：3

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