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http://hdl.handle.net/20.500.12358/26409
TitleEffect of Trap-assisted Tunneling (TAT) on the Performance of Homojunction Mid-Infrared Photodetectors based on InAsSb. P. Chakrabarti, A. Gawarikar, V. Mehta, and D. Garg …
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Abstract

Theoretical investigations have been carried out to explore the effect of trap-assisted tunneling on the performance characteristics of an InAsSb p +-n homojunction photodetector supposed to be grown on InAs substrate. Both electrical and optical characterizations of the device have been simulated for operation of the device in the mid-infrared region (2.5-4.0 m). The study revealed that the dark current of the photodetector under reverse bias is dominated by trap-assisted tunneling component of current and this causes the detectivity of the device to decrease at high reverse bias. It was concluded that by operating the device at a suitable low reverse bias it is possible to improve the room-temperature detectivity significantly as compared to its value at zero bias.

Authors
Silva, Cardozo DA
Martelli, Cicero
Penner, Elisabeth
Kalinowski, Hypolito José
Hamada, AI
Ashour, HS
Ashour, H-s
Shabat, Mohammed M.
TypeJournal Article
Date2006
Subjects
mid-infrared (mir)
trap-assisted tunneling (tat)
band-to-band tunneling (btb)
and resistance area product
index terms: detectivity
inas/inassb
photodetector
Published inJournal of Microwaves and Optoelectronics
SeriesVolume: 5, Number: 1
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The institutional repository of the Islamic University of Gaza was established as part of the ROMOR project that has been co-funded with support from the European Commission under the ERASMUS + European programme. This publication reflects the views only of the author, and the Commission cannot be held responsible for any use which may be made of the information contained therein.

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The institutional repository of the Islamic University of Gaza was established as part of the ROMOR project that has been co-funded with support from the European Commission under the ERASMUS + European programme. This publication reflects the views only of the author, and the Commission cannot be held responsible for any use which may be made of the information contained therein.

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