Reduction in dark current using resonant tunneling barrier in dots-in-a-well long wavelength infrared photodetectors

Reduction of dark current in DWELL photodetectors using resonant tunneling barriers is presented. At 77 K, the dark current is reduced by a factor of 1000 in positive bias. The peak detectivity is 4 times 10 9 cm.Hz 1/2 W -1 (V b = -1.1 V, 77 K at lambda peak = 11 mum).

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Bibliographic Details
Published in:	LEOS 2008 - 21st Annual Meeting of the IEEE Lasers and Electro-Optics Society pp. 360 - 361
Main Authors:	Barve, A.V., Shah, S.Y., Shao, J., Vandervelde, T.E., Shenoi, R., Jang, W.-Y., Krishna, S.
Format:	Conference Proceeding
Language:	English
Published:	IEEE 01-11-2008
Subjects:	Carrier confinement Dark current Electrons Gallium arsenide Infrared detectors Photodetectors Physics Quantum dots Resonant tunneling devices Temperature
Online Access:	Get full text
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Summary:	Reduction of dark current in DWELL photodetectors using resonant tunneling barriers is presented. At 77 K, the dark current is reduced by a factor of 1000 in positive bias. The peak detectivity is 4 times 10 9 cm.Hz 1/2 W -1 (V b = -1.1 V, 77 K at lambda peak = 11 mum).
ISBN:	9781424419319 142441931X
ISSN:	1092-8081 2766-1733
DOI:	10.1109/LEOS.2008.4688639