Area selective deposition of iron films using temperature sensitive masking materials and plasma electrons as reducing agentsShow others and affiliations
2021 (English)In: Journal of Vacuum Science & Technology. A. Vacuum, Surfaces, and Films, ISSN 0734-2101, E-ISSN 1520-8559, Vol. 39, no 4, article id 043411Article in journal (Refereed) Published
Abstract [en]
The potential of area-selective deposition (ASD) with a newly developed chemical vapor deposition (CVD) method, which utilizes plasma electrons as reducing agents for deposition of metal-containing films, is demonstrated using temperature sensitive polymer-based masking materials. The masking materials tested were polydimethylsiloxane, polymethylmethacrylate, polystyrene, parafilm, Kapton tape, Scotch tape, and office paper. The masking materials were all shown to prevent film growth on the masked area of the substrate without being affected by the film deposition process. X-ray photoelectron spectroscopy analysis confirms that the films deposited consist mainly of iron, whereas no film material is found on the masked areas after mask removal. Scanning electron microscopy analysis of films deposited with nonadhesive masking materials show that film growth extended for a small distance underneath the masking material, indicating that the CVD process with plasma electrons as reducing agents is not a line-of-sight deposition technique. The reported methodology introduces an inexpensive and straightforward approach for ASD that opens for exciting new possibilities for robust and less complex area-selective metal-on-metal deposition.
Place, publisher, year, edition, pages
A V S AMER INST PHYSICS , 2021. Vol. 39, no 4, article id 043411
National Category
Materials Chemistry
Identifiers
URN: urn:nbn:se:liu:diva-176444DOI: 10.1116/6.0001076ISI: 000656954800001OAI: oai:DiVA.org:liu-176444DiVA, id: diva2:1565500
Note
Funding Agencies|Lam Research Corporation; Swedish Research Council (VR)Swedish Research Council [2015-03803, 2019-05055]; Swedish Foundation for Strategic Research through the project "Time-resolved low-temperature CVD for III-nitrides" [SSF-RMA 15-0018]; China Scholarship Council (CSC)China Scholarship Council
2021-06-142021-06-142021-12-29