Germanene-GaAs as super media for gas sensor

International Conference on Materials Engineering and Science

Al-Shareefi, Nidhal M.^1 ; Al-Jobory, A.A.^2 ; Abbood, Hamid Ibrahim^1

University of Anbar, Collage of Education for Pure Science, Department of Physics, Iraq^1

University of Babylon, Collage of Science, Department of Physics, Iraq^2

关键词: Effect of doping;    Electronic application;    GaAs;    Gas sensing;    Germanene;    IV characteristics;    Two-dimension systems;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/454/1/012153/pdf
DOI  :  10.1088/1757-899X/454/1/012153

来源: IOP

【 摘 要 】

Current work deals with the effect of doping on the electrical properties of Germanene sheet as a gas sensor. present study involves a new two-dimension system based on Germanene doped with Gallium Arsenide (GaAs) to determine of it is electronic applications as gas sensing. The results showed an influence for the doping on the electrical and thermal conductivity. The I-V characteristics for the doping sheet gave clearly sensing for gas. Where the results showed the doped Germanene-GaAs gave good sensing for all gasses at different concentrations, and it showed the doped Germanene even at the lowest concentration has good sensing for the three studied gasses (NO2, CO2 and H2S). Likewise, this study was focused on the behavior of the thermal conductivity and conductance of each gas. The Germanene-GaAs structure can be used as gas sensor. The relax structures were done by employing the GGA/DZP density functional theory at the Siesta trunk - 426.