Modifications of optical properties in doped germanene nanosheet
by Namrata Dhar; Debnarayan Jana
International Journal of Nano and Biomaterials (IJNBM), Vol. 7, No. 1, 2017

Abstract: Optical properties, like complex dielectric constant, absorption coefficient, refractive index and reflectivity have been analysed via density functional theory (DFT) of As and Ga doped free standing (FS) germanium (Ge) nanosheet. Position dependent (same or different sub-lattice positions) doping mechanism of foreign elements along with concentration variation up to 6.25%, in pristine germanene layer has been adopted for the whole work. Interesting modifications in optical anisotropy than pristine layer have been observed as a consequence of doping. Such modifications, like enhancement or reduction of peak intensity or shifting of peak positions may be useful to design smart germanene based opto-electronics devices in upcoming future.

Online publication date: Wed, 17-Jan-2018

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