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Characterization of Silicon Carbide Thin Films Obtained Via Sublimation of a Solid Polymer Source Using Polymer-Source CVD Process

Published online by Cambridge University Press:  01 February 2011

El Hassane Oulachgar,
Cetin Aktik,
Starr Dostie,
Subhash Gujrathi and
Mihai Scarlete
El Hassane Oulachgar
Affiliation:
el.hassane.oulachgar@usherbrooke.ca, Sherbrooke University, Department of Electrical and Computer Engineering, 2500 Blvd. University, Sherbrooke, J1K 2R1, Canada, 819-8218000 x 61216
Cetin Aktik
Affiliation:
cetin.aktik@usherbrooke.ca, Department of Electrical and Computer Engineering, Sherbrooke University, Nanofabrication and Nanocharacterization Research Center (CRN2),, Sherbrooke, J1K 2R1, Canada
Starr Dostie
Affiliation:
sdostie03@ubishops.ca, Bishop's University, Department of Chemistry, Sherbrooke, J1M 0C8, Canada
Subhash Gujrathi
Affiliation:
gujrathi@lps.umontreal.ca, Montreal University, Thin Film Physics and Technology Research Center (GCM), Department of Physics, Montreal, H3C 3J7, Canada
Mihai Scarlete
Affiliation:
mscarlet@ubishops.ca, Bishop's University, Department of Chemistry, Sherbrooke, J1M 0C8, Canada
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Abstract

Silicon carbide thin films have been deposited via sublimation of a solid organosilane polymer source using atmospheric pressure chemical vapour deposition process (PS-CVD). The advantages of this new process include high deposition rate, compatibility with batch process, hazard-free working environment and low deposition cost. The silicon carbide (SiC) thin films obtained through this process exhibit a highly uniform film thickness, highly conformal coating, and very high chemical resistance to acids and alkalis solutions. These proven characteristics make the SiC thin films obtained by PSCVD process very attractive as a structural material for micro-electro-mechanical systems (MEMS) and as a coating film in a wide range of other applications. These SiC thin films are also expected to be attractive as a semiconductor material provided that the defects and oxygen contamination can be reduced and efficiently controlled. In this work we have investigated the chemical, structural, electrical and optical properties of these films, using elastic recoil detection (ERD), Fourier transform infrared (FTIR) spectroscopy, photospectroscopy, ellipsometry, and capacitance-voltage measurements.

Keywords

thin filmchemical vapor deposition (CVD) (deposition)polymer

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