Numerical modeling of the temporal response of back-gated metal-semiconductor-metal photodetector in an equilibrium condition

Habibpour, A. and Das, N. and Mashayekhi, H. R. (2014) Numerical modeling of the temporal response of back-gated metal-semiconductor-metal photodetector in an equilibrium condition. Iranian Journal of Science & Technology, 38 (A4). pp. 441-444. ISSN 1028-6276

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Abstract

We have simulated the carrier concentration and temporal response characteristics of a Back-Gated Metal-Semiconductor-Metal (BG-MSM) photodetector in one dimension as a function of optical pulse position on the active region in an equilibrium condition (without bias voltage to the photodetector). We have adopted a nonlinear ambipolar transport model to simulate the behavior of photo-generated carriers in the active region of the BGMSM photodetector. From the simulation results, it is observed that for optical pulse positions in the cathode region, the magnitude of the response current is exactly the same but opposite that of the anode region. The response of the photodetector is zero when a pulse is positioned at the center of the active region. This important feature of the device could make it attractive for micro-scale positioning of highly sensitive instruments. Our simulation results agreed well with the experimental results.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Files associated with this item cannot be displayed due to copyright restrictions.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Mechanical and Electrical Engineering
Date Deposited: 28 Jul 2016 04:20
Last Modified: 06 Mar 2018 05:59
Uncontrolled Keywords: BG-MSM photodetector; equilibrium condition; ambipolar transport; simulation
Fields of Research : 09 Engineering > 0906 Electrical and Electronic Engineering > 090699 Electrical and Electronic Engineering not elsewhere classified
Socio-Economic Objective: B Economic Development > 89 Information and Communication Services > 8998 Environmentally Sustainable Information and Communication Services > 899899 Environmentally Sustainable Information and Communication Services not elsewhere classified
URI: http://eprints.usq.edu.au/id/eprint/28469

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