Electronic band structure and photoemission spectra of graphene on silicon substrate

Brahmanandam Javvaji; Abhilash Ravikumar; B. M. Shenoy; D. Roy Mahapatra; M. R. Rahman; G. M. Hegde

doi:10.1117/12.2042576

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7 March 2014 Electronic band structure and photoemission spectra of graphene on silicon substrate

Brahmanandam Javvaji, Abhilash Ravikumar, B. M. Shenoy, D. Roy Mahapatra, M. R. Rahman, G. M. Hegde

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Proceedings Volume 8980, Physics and Simulation of Optoelectronic Devices XXII; 89801B (2014) https://doi.org/10.1117/12.2042576
Event: SPIE OPTO, 2014, San Francisco, California, United States

Abstract

Synergizing graphene on silicon based nanostructures is pivotal in advancing nano-electronic device technology. A combination of molecular dynamics and density functional theory has been used to predict the electronic energy band structure and photo-emission spectrum for graphene-Si system with silicon as a substrate for graphene. The equilibrium geometry of the system after energy minimization is obtained from molecular dynamics simulations. For the stable geometry obtained, density functional theory calculations are employed to determine the energy band structure and dielectric constant of the system. Further the work function of the system which is a direct consequence of photoemission spectrum is calculated from the energy band structure using random phase approximations.

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Brahmanandam Javvaji, Abhilash Ravikumar, B. M. Shenoy, D. Roy Mahapatra, M. R. Rahman, and G. M. Hegde "Electronic band structure and photoemission spectra of graphene on silicon substrate", Proc. SPIE 8980, Physics and Simulation of Optoelectronic Devices XXII, 89801B (7 March 2014); https://doi.org/10.1117/12.2042576

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