On the detectivity of quantum-dot infrared photodetectors

V. Ryzhii; I. Khmyrova; V. Mitin; M. Stroscio; M. Willander

doi:10.1063/1.1376435

On the detectivity of quantum-dot infrared photodetectors

V. Ryzhii
, I. Khmyrova
, V. Mitin
, M. Stroscio
, M. Willander

Department of Electrical Engineering

The University of Aizu
United States Army Research Office
Chalmers University of Technology

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

77 Scopus citations

Abstract

We report on the analysis of thermally-limited operation of quantum-dot infrared photodetectors (QDIPs). A device model is developed and used to calculate the QDIP detectivity as a function of the structural parameters, temperature, and applied voltage, as well as to determine the conditions for the detectivity maximum. The QDIP detectivity is compared with that of quantum-well infrared photodetectors (QWIPs). This work clarifies why the existing QDIPs are still inferior to QWIPs and shows that a significant improvement in the QDIP performance can be accomplished by the utilization of dense QD arrays with small QDs.

Original language	English
Pages (from-to)	3523-3525
Number of pages	3
Journal	Applied Physics Letters
Volume	78
Issue number	22
DOIs	https://doi.org/10.1063/1.1376435
State	Published - May 28 2001

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10.1063/1.1376435

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abstract = "We report on the analysis of thermally-limited operation of quantum-dot infrared photodetectors (QDIPs). A device model is developed and used to calculate the QDIP detectivity as a function of the structural parameters, temperature, and applied voltage, as well as to determine the conditions for the detectivity maximum. The QDIP detectivity is compared with that of quantum-well infrared photodetectors (QWIPs). This work clarifies why the existing QDIPs are still inferior to QWIPs and shows that a significant improvement in the QDIP performance can be accomplished by the utilization of dense QD arrays with small QDs.",

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AU - Khmyrova, I.

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AU - Stroscio, M.

AU - Willander, M.

PY - 2001/5/28

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AB - We report on the analysis of thermally-limited operation of quantum-dot infrared photodetectors (QDIPs). A device model is developed and used to calculate the QDIP detectivity as a function of the structural parameters, temperature, and applied voltage, as well as to determine the conditions for the detectivity maximum. The QDIP detectivity is compared with that of quantum-well infrared photodetectors (QWIPs). This work clarifies why the existing QDIPs are still inferior to QWIPs and shows that a significant improvement in the QDIP performance can be accomplished by the utilization of dense QD arrays with small QDs.

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On the detectivity of quantum-dot infrared photodetectors

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