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:: جلد 22 - مجموعه مقالات پذیرفته و ارائه شده در بیست و دومین کنفرانس اپتیک و فوتونیک ایران ::
ICOP & ICPET سال22 صفحات 938-941 برگشت به فهرست نسخه ها
Improvement of the optical absorption in graphene-based Photodetector using plasmonic pyramid-shaped gold nanoparticles at visible spectrum
Mr. Reza Askari1، Dr. Saeed Golmohammadi* 2
1- School of Engineering-Emerging Technologies, University of Tabriz, Tabriz, Iran
2- Associate Proff. School of Engineering-Emerging Technologies, University of Tabriz, Tabriz, Iran
چکیده:   (1475 مشاهده)

In this paper, a graphene photodetector based on plasmonic gold nanoparticles in the form of the pyramid with square sides has been introduced. Graphene is used as a material with desired electronic properties for detection in the visible wavelengths. One of the major limitations of monolayer graphene is its low light absorption (about 2/3%) at visible spectrum. In the present work, we have improved the light absorption of a monolayer graphene employing plasmonic properties of the pyramid-shaped gold nanoparticles on top of graphene which enhances light absorption. In the our given structure, we have change the geometric parameters of the structure via optimization of light absorption. Simulation results demonstrate that the amount of light absorption is enhanced more than 11 times in comparison to the structure without nanoparticles. This would facilitate the application of monolayer graphene in optoelectronic devices at visible wavelengths.

واژه‌های کلیدی: Photodetector، plasmonic، visible wavelengths، graphene، nanopramid
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نوع مطالعه: پژوهشي | موضوع مقاله: تخصصی
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Askari R, Golmohammadi S. Improvement of the optical absorption in graphene-based Photodetector using plasmonic pyramid-shaped gold nanoparticles at visible spectrum. ICOP & ICPET. 2016; 22 :938-941
URL: http://opsi.ir/article-1-993-fa.html

Askari Reza، Golmohammadi Saeed. Improvement of the optical absorption in graphene-based Photodetector using plasmonic pyramid-shaped gold nanoparticles at visible spectrum. کنفرانس اپتیک و فوتونیک ایران و کنفرانس مهندسی و فناوری فوتونیک ایران. 1394; 22 () :938-941

URL: http://opsi.ir/article-1-993-fa.html



جلد 22 - مجموعه مقالات پذیرفته و ارائه شده در بیست و دومین کنفرانس اپتیک و فوتونیک ایران برگشت به فهرست نسخه ها
انجمن اپتیک و فوتونیک ایران Optics and Photonics Society of Iran
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