Temperature dependence of far-infrared electroluminescence in parabolic quantum wells

被引：32
|
作者：
Ulrich, J [1 ]
Zobl, R
Unterrainer, K
Strasser, G
Gornik, E
Maranowski, KD
Gossard, AC
机构：
[1] Vienna Tech Univ, Inst Festkorperelekt, A-1040 Vienna, Austria
[2] Univ Calif Santa Barbara, Dept Elect & Comp Engn, Santa Barbara, CA 93106 USA
来源：
APPLIED PHYSICS LETTERS | 1999年 / 74卷 / 21期
关键词：
D O I：
10.1063/1.124091
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We have measured the far-infrared emission from parabolically graded quantum wells driven by an in-plane electric field in the temperature range from 20 to 240 K. The peak emission corresponds to the intersubband plasmon in the parabolic potential. Its photon energy (6.6/9.8 meV) remains rather unaffected by temperature variations, the full-width at half-maximum ranges from 1 (T=20 K) to 2 meV (T=240 K). The reduction of emission efficiency with increasing temperature is attributed to the change in the nonradiative lifetime. (C) 1999 American Institute of Physics. [S0003-6951(99)05021-4].
引用
收藏
页码：3158 / 3160
页数：3
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