Near infrared quantum cascade detector in GaN∕AlGaN∕AlN heterostructures

Near infrared quantum cascade detector in GaN∕AlGaN∕AlN heterostructures

A quantum cascade detector in the GaN/AlGaN/AlN material system was implemented. The design takes advantage of the large internal field existing in the nitrides in order to generate the essential saw tooth energy level structure. The device operates in the near IR spectral range with a room temperat...

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Bibliographic Details
Published in:Applied physics letters Vol. 92; no. 1
Main Authors: Vardi, A., Bahir, G., Guillot, F., Bougerol, C., Monroy, E., Schacham, S. E., Tchernycheva, M., Julien, F. H.
Format: Journal Article
Language:English
Published: 07-01-2008
Online Access:Get full text
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Summary:A quantum cascade detector in the GaN/AlGaN/AlN material system was implemented. The design takes advantage of the large internal field existing in the nitrides in order to generate the essential saw tooth energy level structure. The device operates in the near IR spectral range with a room temperature responsivity at λ=1.7μm of 10mA∕W (1000V∕W) at zero bias. The spectroscopic measurements are in good agreement with simulations.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.2830704