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ICOP & ICPET 2017, 23 - : 397-400 Back to browse issues page
Design of Graphene Based Photodetector with High Absorption and Responsivity
Mohammad Hossein Mahdabi nezhad *1, Maryam Pourmahyabadi1
1- Shahid Bahonar University of Kerman
Abstract:   (1283 Views)

In this paper, a novel structure of photodetector consisting of periodic layers of graphene and silica located on a metal film with groove rings of silica is proposed. The excited localized Plasmon resonance in groove rings makes a strong enhancement of  light absorption in the graphene layer. The numerical results revealed that the graphene absorption  increases from 2.3% to %47.5 and even in three-layer graphene, increases up to a maximum value of %80.7 in the C band. In addition, the absorption peak is dependent on the groove depth and ring radius as well as the number of graphene layers. Also, a photoresponsivity of 100A/W and photocurrent of 50mA at -1.5V bias and at wavelength of 1.55µm are achieved.

Keywords: Graphene, Photodetector, Photoresponsivity, Photocurrent, Plasmonic.
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Type of Study: Research | Subject: Special
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Mahdabi nezhad M H, Pourmahyabadi M. Design of Graphene Based Photodetector with High Absorption and Responsivity. ICOP & ICPET. 2017; 23 :397-400
URL: http://opsi.ir/article-1-1416-en.html

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