Oxidation rates of aluminium nitride thin films: effect of composition of the atmosphere

Autor: Olga Rac-Rumijowska, Andrej Vincze, Adrian Zakrzewski, R. Korbutowicz, Andrzej Stafiniak
Rok vydání: 2017
Předmět:
Zdroj: Journal of Materials Science: Materials in Electronics. 28:13937-13949
ISSN: 1573-482X
0957-4522
DOI: 10.1007/s10854-017-7243-5
Popis: This paper presents an analysis of thermal oxidation kinetics for Aluminium nitride (AlN) epitaxy layers using three methods: dry, wet and mixed. The structures thus obtained were examined by means of scanning electron microscope, energy-dispersive X-ray spectroscopy, spectroscopic ellipsometry and secondary ions mass spectroscopy. On the basis of the investigation results, a model of layer structure after oxidation was proposed, the thickness of the layers was assessed and the refractive indices for particular layers were determined. The modelling results prove that AlN thermal oxidation in dry oxygen follows the logarithmic law, wet oxidation follows the parabolic law, whereas mixed oxidation follows the linear law.
Databáze: OpenAIRE