Predictions of the responsivity of terahertz quantum well infrared photodetectors

被引：0

作者：

Gadir, MA ^{[1
]}

Harrison, P ^{[1
]}

Soref, RA ^{[1
]}

机构：

[1] Univ Leeds, Sch Elect & Elect Engn, IMP, Leeds LS2 9JT, W Yorkshire, England

来源：

QUANTUM SENSING: EVOLUTION AND REVOLUTION FROM PAST TO FUTURE | 2003年 / 4999卷

关键词：

QWIP; photocurrent; capture probability; photoconductive gain; detection wavelength;

D O I：

10.1117/12.480307

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This letter focuses on the first-principles model of the photocurrent in quantum well infrared photodetectors (QWIPs) derived in reference [1]. The model explores the absorption coefficient measured experimentally. Then we move to show how the responsivity and quantum efficiency vary with a. The work in this paper shows that the device response indeed increases as QWIPs are designed and fabricated to detect longer wavelengths despite the fall in device performance as a result of the growing effect of the dark (noise) current.

引用

页码：200 / 209

页数：10

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