Publication date: 31 December 2015
Source:Thin Solid Films, Volume 597
Author(s): A.P. McCoy, J. Bogan, A. Brady, G. Hughes
In this study, the use of atomic oxygen to oxidise ruthenium thin films is assessed. Atomic layer deposited (ALD) ruthenium thin films (~ 3 nm) were exposed to varying amounts of atomic oxygen and the results were compared to the impact of exposures to molecular oxygen. X-ray photoelectron spectroscopy studies reveal substantial oxidation of metallic ruthenium films to RuO2 at exposures as low as ~ 102 L at 575 K when atomic oxygen was used. Higher exposures of molecular oxygen resulted in no metal oxidation highlighting the benefits of using atomic oxygen to form RuO2 . Additionally, the partial oxidation of these ruthenium films occurred at temperatures as low as 293 K (room temperature) in an atomic oxygen environment.
Source:Thin Solid Films, Volume 597
Author(s): A.P. McCoy, J. Bogan, A. Brady, G. Hughes