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- W792079929 abstract "A first principles many-body approach is employed to calculate the band structure and optical response of nanometer sized ribbons of SiC. Many-body effects are incorporated using the GW approximation, and excitonic effects are included using the Bethe-Salpeter equation. Both unpassivated and hydrogen passivated armchair SiC nanoribbons are studied. As a consequence of low dimensionality, large quasiparticle corrections are seen to the Kohn-Sham energy gaps. In both cases quasiparticle band gaps are increased by up to 2 eV, as compared to their DFT-GGA values. Inclusion of electron-hole interactions modifies the absorption spectra significantly, giving rise to strongly bound excitonic peaks in these systems. The results suggest that armchair SiC nanoribbons have the potential to be used in optoelectronic devices operating in the UV-Vis region of spectrum." @default.
- W792079929 created "2016-06-24" @default.
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- W792079929 date "2015-06-23" @default.
- W792079929 modified "2023-09-27" @default.
- W792079929 title "Optoelectronic properties of armchair SiC nanoribbons: The role of many-body effects" @default.
- W792079929 hasPublicationYear "2015" @default.
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