Two-band ZnCdSe/ZnCdMgSe quantum well infrared photodetector

Yasin Kaya; Arvind Ravikumar; Guopeng Chen; Maria C. Tamargo; Aidong Shen; Claire Gmachl

doi:10.1063/1.5013607

AIP Advances (Jul 2018)

Two-band ZnCdSe/ZnCdMgSe quantum well infrared photodetector

Yasin Kaya,
Arvind Ravikumar,
Guopeng Chen,
Maria C. Tamargo,
Aidong Shen,
Claire Gmachl

Affiliations

Yasin Kaya: Department of Electrical Engineering, Princeton University, Princeton, New Jersey 08544, USA
Arvind Ravikumar: Department of Electrical Engineering, Princeton University, Princeton, New Jersey 08544, USA
Guopeng Chen: Department of Electrical Engineering, The City College of New York, New York, New York 10031, USA
Maria C. Tamargo: Department of Chemistry, The City College of New York, New York, New York 10031, USA
Aidong Shen: Department of Electrical Engineering, The City College of New York, New York, New York 10031, USA
Claire Gmachl: Department of Electrical Engineering, Princeton University, Princeton, New Jersey 08544, USA

DOI: https://doi.org/10.1063/1.5013607
Journal volume & issue: Vol. 8, no. 7
pp. 075105 – 075105-8

Abstract

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An independently controllable, two-band quantum well infrared photo-detector (QWIP) based on the ZnCdSe/ZnCdMgSe material system is characterized. The two-band detector consists of two stacks of quantum wells absorbing in the mid- and long-wavelength infrared regime. Photocurrent and responsivity measurements resulted in 11 mA/W and 7 mA/W peak responsivities at 80 K with corresponding detectivities of 2 × 108 cm√Hz/W and 2 × 107 cm√Hz/W centered at 4.8 μm (258 meV) and 7.6 μm (163 meV). The two-band device can also perform as a broadband detector covering wavelengths from 4.4 μm (281 meV) to 8.2 μm (151 meV) at 80 K with a full width at half maximum of 130 meV. Two-band QWIP is tested for an absolute temperature detection application and good agreement is observed between theoretical calculation and experimental results.

Published in AIP Advances

ISSN: 2158-3226 (Online)
Publisher: AIP Publishing LLC
Country of publisher: United States
LCC subjects: Science: Physics
Website: http://aipadvances.aip.org/

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