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year 27, Issue 1 (Iranian Nano-Photonic Conference 2020 2020)
ICOP & ICPET _ INPC _ ICOFS 2020, 27(1): 22-24 |
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Khosravian E, Mashayekhi H R, Farmani A. Design and simulation of graphene-based photodetector for optimization of absorption in near infrared region. ICOP & ICPET _ INPC _ ICOFS 2020; 27 (1) :22-24
URL: http://opsi.ir/article-1-2243-en.html
URL: http://opsi.ir/article-1-2243-en.html
1- Faculty of Physics, Shahid Bahonar University, Kerman, Iran
2- Dept. of Electronics, Faculty of ECE, Lorestan University, Khoramabad, Iran
2- Dept. of Electronics, Faculty of ECE, Lorestan University, Khoramabad, Iran
Abstract: (1616 Views)
Nowadays, the use of graphene has attracted enormous attention in manufacturing of optoelectronic devices such as photodetectors with small dimensions. One of the new ways for increasing the absorption of light in photodetectors is the use of metal nanostructures along with graphene in order to show the plasmonic effects. In this paper, a plasmonic graphene-based photodetector has been designed and its optical analysis done using Finite-difference time-domain (FDTD) numerical method. In this structure, the absorption is due to the excitation of surface plasmon polaritons in Metal and graphene interface. Optical absorption in proposed structure is optimized by varying physical parameters of nano- grating and chemical potential of graphene. Based on numerical results, the absorption of the structure is almost complete using only a single layer of graphene and the absorption spectrum of the structure is independent of radiation angle.
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