The electronic structure of the K/AlN nanointerface
DOI:
https://doi.org/10.33910/2687-153X-2022-3-1-21-24Keywords:
III-nitrides, aluminum nitride (AlN), interfaces, surface, photoelectron spectroscopy, electronic structureAbstract
The electronic structure of the AlN surface and the ultrathin K/AlN interface was studied using in situ photoelectron spectroscopy under ultra-high vacuum conditions. Core level spectra from the N 1s, Al 2p and K 3p and from the valence band were studied for the clean AlN surface and for the K/AlN interface in the regime of K submonolayer coatings. During K adsorption, significant changes in all the spectra were found. Surface states in the valence band region below the EVBM were found. It was determined that the K/AlN interface has the semiconductor-like character.
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