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Revista mexicana de física

Print version ISSN 0035-001X


CHALE-LARA, F. et al. Deposit of AlN thin films by nitrogen reactive pulsed laser ablation using an Al target. Rev. mex. fis. [online]. 2019, vol.65, n.4, pp.345-350.  Epub May 06, 2020. ISSN 0035-001X.

We report the synthesis of AlN hexagonal thin films by pulsed laser ablation, using Al target in nitrogen ambient over natively-oxidized Si (111) at 600°C. Composition and chemical state were determined by X-ray photoelectron spectroscopy, while structural properties were investigated using X-ray diffraction. High-resolution XPS spectra present a gradual shift to higher binding energies on the Al2p peak when nitrogen pressure is incremented, indicating the formation of the AlN compound. At 30 mTorr nitrogen pressure, the Al2p peak corresponds to AlN, located at 73.1 eV, and the XRD pattern shows a hexagonal phase of AlN. The successful formation of the AlN compound is corroborated by UV-Vis reflectivity measurements.

Keywords : AlN thin films; pulsed laser deposition; XPS; 68.55.-a; 73.61.Cw.

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