نوع مقاله : مقاله پژوهشی
نویسندگان
1 1. گروه فیزیک، دانشکدة علوم، دانشگاه آزاد اسلامی واحد کرمانشاه، کرمانشاه 2. گروه فیزیک، مرکز علوم پایه، دانشگاه پدافند هوایی خاتمالانبیاء (ص)، تهران
2 2. گروه فیزیک، مرکز علوم پایه، دانشگاه پدافند هوایی خاتمالانبیاء (ص)، تهران
کلیدواژهها
عنوان مقاله English
نویسندگان English
Electronic and optical properties of pentagonal GeS2 monolayer are investigated by first principles calculations in the framework of the density functional theory. The stability of the nanostructure is confirmed by cohesive energy calculation, as well as phonon dispersion calculation. The electronic properties simulation indicates that GeS2 monolayer is an indirect band gap semiconductor with a band gap of about 0.9 eV. Furthermore, the optical properties investigation reveals that the material exhibits a very low absorption and reflectivity in visible region of the electromagnetic spectrum. However, it has a considerable absorption and reflectivity in the ultra violet region. The results of this study, therefore, suggest that the considered structure has a good potential application in the new generation of opto-electronic devices, especially as a UV protection layer.
کلیدواژهها English
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