Nitrogen effect on the surface and optical properties of cubic and hexagonal BN nano layered thin films deposited by RF sputtering method
Abstract
In this study, influence of N2 gas concentration on the surface and optical properties of BN thin films were investigated. A cubic BN phase, from the hexagonal structure, was produced by nitrogen concentration during the deposition process. All BN thin films were deposited on glass substrates by reactive radio frequency magnetron sputtering method at argon / nitrogen (ratios of 3:7, 1:1 and 4:1) gas mixtures. For the determination of these two phases’ surface and optical properties, field emission scanning electron microscopy, wavelength dispersive x-ray spectroscopy, atomic force microscopy, UV-Vis spectrophotometry, tensiometry, and interferometry tools were used. According to the results, the deposited films are homogenous, compact and nano-structured, and hydrophobic. Perfect stoichiometric ratios were obtained for deposited samples. Phase transitions to cubic phase from hexagonal BN crystal system were only obtained by N2 gas concentration.
Keywords
Nano-thick BN layer,cubic BN; hexagonal BN; surface properties; optical properties
References
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