Abstract
We fabricated aluminum fluoride thin films by pulsed DC magnetron sputtering with various flow rates and sputtering powers. Our method is distinct from the conventional deposition process in that we used inexpensive Al (99.99% purity) as the target instead of an expensive fluoride compound. The optical properties and microstructure of the thin films were examined. The optical quality of thin films deposited at a sputtering power and injected (SCCM denotes cubic centimeters per minute at standard temperature and pressure) flow at room temperature showed improvement with an extinction coefficient of less than at . The deposition of thin films at different substrate temperatures and annealed by UV light was also investigated.
© 2007 Optical Society of America
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