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Surface Roughness in Plasma-Etched As2S3 Films: Its origin and improvement

Madden, Steve; Rode, Andrei V; Wang, Rongping; Ankiewicz, Adrian; Luther-Davies, Barry; Choi, Duk-Yong


We describe the microstructure of As2S3 films and its effect on the morphology of plasma-etched surfaces. The Raman spectroscopy and X-ray photoelectron spectroscopy demonstrated that the observed grainy morphology of etched As2S3 surfaces comes from differential chemical attack between different phases within the film. Two approaches were found to be effective for improving the smoothness of etched surfaces: a change in the plasma chemistry from CF4-O2 to CHF3-O2 and the application of a...[Show more]

CollectionsANU Research Publications
Date published: 2008
Type: Journal article
Source: IEEE Transactions on Nanotechnology
DOI: 10.1109/TNANO.2008.920165


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