ANALYSIS OF NORMAL-INCIDENT ABSORPTION IN P-TYPE QUANTUM-WELL INFRARED PHOTODETECTORS

被引：38
|
作者：
MAN, P
PAN, DS
机构：
[1] Department of Electrical Engineering, University of California at Los Angeles, Los Angeles
来源：
APPLIED PHYSICS LETTERS | 1992年 / 61卷 / 23期
关键词：
D O I：
10.1063/1.108482
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Normal-incident absorption in the recently-demonstrated, p-type quantum-well infrared photodetectors is analyzed with the k.p theory, under the envelope-function approximation. A first-principles calculation of the infrared-absorption spectra is performed with no adjustable parameter. The responsivity is evaluated from the calculated normal-incident absorption and the experimentally-derived photoconductive gain. Good agreement is obtained with measurements at lambda < lambda(c). The bandwidths of the infrared-absorption spectra are found to be limited by spin-orbit splitting as well as the overlap integrals.
引用
收藏
页码：2799 / 2801
页数：3
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