Deposition of aluminium oxide thin films by reactive magnetron sputtering

Autor: Kari Koski, Jorma Hölsä, P. Juliet
Rok vydání: 1999
Předmět:
Zdroj: Surface and Coatings Technology. :716-720
ISSN: 0257-8972
DOI: 10.1016/s0257-8972(99)00087-0
Popis: Aluminium oxide thin films were deposited by direct current (d.c.) reactive magnetron sputtering on glass-slide, silicon wafer, stainless-steel and polycarbonate substrates. The thicknesses of the films were between 200 nm and 3.0 μm. The deposition was controlled by the target voltage to obtain stoichiometric thin films with a high deposition rate. The deposition process was studied in terms of target power, I–U characteristics of the target, sputtering gas pressure and substrate bias voltage. The film properties of interest were O/Al ratio, density, nanohardness, intrinsic stress, crystallographic structure and surface roughness. The deposition rate obtained for stress-free and transparent aluminium oxide thin film was 215 nm min−1, 77% of the rate of metallic aluminium.
Databáze: OpenAIRE