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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 818-821 برگشت به فهرست نسخه ها
Study of Optical Properties of Single-layer Molybdenum disulfide by Tight Binding Method
miss maryam nayeri1، mr morteza fathi pour2، Mr. arash Yazdanpanah Goharrizi* 3
1- Msc Department of Electrical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran.
2- phd School of Electrical and Computer Engineering, University of Tehran, Tehran, Iran
3- Faculty of Electrical Engineering, ShahidBeheshti University, Tehran, Iran.
چکیده:   (1197 مشاهده)

In this research, band structure and band gap energy of molybdenum disulfide is simulated by tight binding method. For this purpose, we assumed AWT IMAGEorbitals of Mo atom and AWT IMAGEorbitals of S atom to describe the near conductance and valence band states. The direct band gap, obtained by the nearest neighbor approximation, is equal to 1.85 eV. We used a semi classical approach by exploiting Hamiltonian matrix and perturbation theory to investigate the optical properties of single-layer MoS2. Optical parameters such as imaginary and real part of dielectric function have been calculated via kramers-kronig transformation and the electron energy loss spectrum calculated and compared with experimental as well as first principle calculations. The numerical analysis in this paper has been carried out by coding in MATLAB. These studies are important since the monolayer MoS2 has been envisaged for applications in the optoelectronic devices such as photo detectors, solar cells and light emitting diodes.

واژه‌های کلیدی: Molybdenum disulfide، optical properties، dielectric function
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نوع مطالعه: پژوهشي | موضوع مقاله: تخصصی
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nayeri M, fathi pour M, Yazdanpanah Goharrizi A. Study of Optical Properties of Single-layer Molybdenum disulfide by Tight Binding Method. ICOP & ICPET. 2016; 22 :818-821
URL: http://opsi.ir/article-1-928-fa.html

nayeri maryam، fathi pour morteza، Yazdanpanah Goharrizi arash. Study of Optical Properties of Single-layer Molybdenum disulfide by Tight Binding Method. کنفرانس اپتیک و فوتونیک ایران و کنفرانس مهندسی و فناوری فوتونیک ایران. 1394; 22 () :818-821

URL: http://opsi.ir/article-1-928-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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