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مقالۀ پژوهشی: بررسی ویژگیهای اپتیکی ترکیب گالیم فسفید در دو فاز بلندروی و سینابار | ||
فیزیک کاربردی ایران | ||
دوره 13، شماره 1 - شماره پیاپی 32، فروردین 1402، صفحه 21-32 اصل مقاله (2.21 M) | ||
نوع مقاله: مقاله پژوهشی | ||
شناسه دیجیتال (DOI): 10.22051/ijap.2023.38119.1244 | ||
نویسندگان | ||
حمدا.. صالحی* 1؛ شیوا مخاوات2 | ||
1استاد، گروه فیزیک، دانشکده علوم، دانشگاه شهید چمران اهواز، اهواز، ایران | ||
2دانشآموختۀ کارشناسی ارشد، گروه فیزیک، دانشکده علوم، دانشگاه شهید چمران اهواز، اهواز، ایران | ||
چکیده | ||
در این مقاله ویژگیهای اپتیکی ترکیب GaP در فازهای مختلف بررسی شده است. محاسبات با استفاده از روش شبهپتانسیل، در چارچوب نظریه تابعی چگالی و با استفاده از کد محاسباتی PWscf انجام شده است. پتانسیلهای مورد استفاده با شرایط بار پایسته ساخته شدهاند و تابع تبادلی- همبستگی آنها از نوع GGA میباشد. نتایج بدست آمده از ویژگیهای اپتیکی در دو فاز بلندروی و سینابار نشاندهنده هماهنگی ساختار نواری با سهم موهومی تابع دیالکتریک و هم چنین برابری تقریبی شکاف نواری با شکاف اپتیکی است. ضرائب شکست به دست آمده از سهم حقیقی تابع دیالکتریک در فاز بلندروی برابر 306/3 و در فاز سینابار به ترتیب در دو راستای xx و zz برابر با 808/3 و 235/4 میباشند. | ||
کلیدواژهها | ||
گالیمفسفید؛ نظریۀ تابعی چگالی؛ خواص اپتیکی؛ کوانتوماسپرسو | ||
عنوان مقاله [English] | ||
Research Paper: Investigation of Optical properties of Gallium Phosphide in Two Phases of Zincblend and Cinnabar | ||
نویسندگان [English] | ||
Hamdollah Salehi1؛ Shiva Mokhavat2 | ||
1Professor, Department of Physics, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran | ||
2M. Sc. Graduate, Department of Physics, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran | ||
چکیده [English] | ||
In this paper, the optical properties of GaP in different phases have been investigated. The calculations were performed by using pseudopotential in the framework of density functional theory and using the PWscf code. The pseudopotentials applied here are generated using norm-conserving conditions within GGA for the exchange-correlation function. The optical properties of the Zincblend and Cinnabar phases reveal the conformity between the band structure and the imaginary part of the dielectric function, and the band gap and optical gap are almost equal. The refractive index obtained from the real part of the dielectric function in Zincblend is 3.306 and in the Cinnabar phase is 4.235 and 3.808 in the x and z directions, respectively. | ||
کلیدواژهها [English] | ||
Gallium Phosphide, Density Functional Theory, Optical Properties, Quantum Espresso | ||
مراجع | ||
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