Abstract:On the basis of first-principles calculation, we investigate the control of the electronic properties of the GaN(0001) surface by metal atoms. The results show that all the metal-atom-adsorbed GaN(0001) surfaces are direct-band-gap semiconductors, and their band gaps could be reduced considerably. The results of the density of states indicate that the orbital hybridization of the electronic states near the Fermi level took place between adatoms and the GaN(0001) surface, and electrons were mainly transferred f… Show more
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