Effect of Thickness on Structural and Morphological Properties of AlN Films Prepared Using Single Ion Beam Sputtering

Journal of Applied Chemical Research

مقاله 5، دوره 8، شماره 3، مهر 2014، صفحه 45-52   

نوع مقاله: Research Paper

نویسندگان

Fatemeh Hajakbari^* ؛ Alireza Hojabri؛ Majid Mojtahedzadeh Larijani

چکیده

Aluminum nitride (AlN) thin films have potential applications in microelectronic and optoelectronic devices. In this study, AlN thin films with different thicknesses were deposited on silicon substrate by single ion beam sputtering method. The X-ray diffraction (XRD) spectra revealed that the structure of films with thickness of - nm was amorphous, while the polycrystalline hexagonal AlN with a rough surface was observed at a thickness of nm. Also, the formation of AlN in amorphous films is identified by Fourier transform infrared (FTIR) spectroscopy. Atomic force microscopy (AFM) study confirms that the surface roughness and average grain size of films increased with film thickness.

کلیدواژه‌ها

AlN؛ Ion beam sputtering؛ optical properties؛ Structural Properties