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Infrared multispectral detection using Si/SixGe1-x quantum well infrared photodetectors

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7 Author(s)
Krapf, D. ; Department of Applied Physics, The Fredi and Nadine Herrmann School of Applied Science, The Hebrew University of Jerusalem, Jerusalem 91904, Israel ; Adoram, B. ; Shappir, J. ; Saar, A.
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A modified p-type Si/SiGe quantum well infrared photodetector for multispectral infrared imaging applications is demonstrated. In order to improve the detector’s performances we have used a SiGe emitter and a low-temperature wet passivation process that give rise to a reduced dark current, even at relatively high bias voltages. Multispectral photoresponse at the long, mid and short wavelength infrared atmospheric windows was observed. The response peaks are assigned to the various classes of intervalence band transitions in the quantum wells and in the SiGe emitter layers. © 2001 American Institute of Physics.

Published in:

Applied Physics Letters  (Volume:78 ,  Issue: 4 )

Date of Publication:

Jan 2001

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