کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7934411 1512881 2015 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Many body effects study of electronic & optical properties of silicene-graphene hybrid
ترجمه فارسی عنوان
بسیاری از اثرات بدن مطالعه خواص الکترونیکی و نوری سیلیکن گرافن هیبرید
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
چکیده انگلیسی
Using first principles many-body calculations method, we study electronic and optical properties of 2D silicene-graphene hybrid. Based on phonon-spectrum calculations, we show the absence of soft modes indicating the stability of the system. We also calculate the band gap in both the absence and the presence of quasiparticle corrections. The analysis of optical absorption spectra and the correlation in real space between the excited electron-hole states reveals that the excitonic effects in silicene-graphene hybrid are significant and leads to strong bound excitons. The first active exciton is characterized by a binding energy of 0.81 eV, an effective mass 0.41m0 and a Bohr radius of 2.78 Å. The results of this work make silicene-graphene hybrid a promising candidate for optoelectronic applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica E: Low-dimensional Systems and Nanostructures - Volume 68, April 2015, Pages 38-41
نویسندگان
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