Article ID Journal Published Year Pages File Type
1676188 Thin Solid Films 2006 4 Pages PDF
Abstract

We prepared hydrogenated amorphous silicon carbide thin films using SiH4, CH4 and H2 gases by the hot-wire chemical vapor deposition method and investigated the influence of hydrogen gas flow rate, F(H2), on their film properties. For F(H2) between 10 and 100 sccm, two groups of films were obtained: high Eg opt. (group H) and low Eg opt. (group L). The Eg opt. in group H decreased from 2.27 to 2.14 eV when F(H2) increased from 10 to 100 sccm, and the Eg opt. in group L decreased from 1.93 to 1.78 eV when F(H2) increased from 50 to 100 sccm. The difference in Eg opt. between the two groups resulted from differences in the electrical power applied to the W wire and deposition on the W wire.

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Physical Sciences and Engineering Materials Science Nanotechnology
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