Comparative study of electronic and optical properties of graphene and germanene: DFT study

被引：32

作者：

Ould Ne, M. L. ^{[1
]}

El Hachimi, A. G. ^{[1
]}

Boujnah, M. ^{[1
]}

Benyoussef, A. ^{[1
,2
,3
]}

El Kenz, A. ^{[1
]}

机构：

[1] Univ Mohammed 5, Lab Magnetism & Phys High Energies, Dept Phys, URAC 12,BP 1014, Rabat, Morocco

[2] MAScIR Moroccan Fdn Adv Sci Innovat & Res, Inst Nanomat & Nanotechnol, Rabat, Morocco

[3] Hassan II Acad Sci & Technol, Rabat, Morocco

来源：

OPTIK | 2018年 / 158卷

关键词：

Graphene germanene; Superlattices; Electronic properties; Band gap engineering; SILICENE; ANALOGS;

D O I：

10.1016/j.ijleo.2017.12.089

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We have performed a first-principle study of the electronic and optical properties of optimized structure of germanene and graphene by means of density functional theory, using the full potential linearized augmented plane wave (FP-LAPW) method based to Gradient Generazed approximation (GGA). Moreover, the enhanced absorption coefficient, reflectivity and refraction index are also study in both directions. In general, the calculated results indicate that the graphene and germanene are similar electronic structure with zero band gap at K point, further the absorption coefficient and reflectivity of germanene is higher in visible light than graphene; germanene holds great potential solar cell applications., (C) 2017 Elsevier GmbH. All rights reserved.

引用

页码：693 / 698

页数：6

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