Diamond-like carbon (DLC) thin film is often used on the surface of Infrared windows as the protecting film. PECVD
method is one of the principal ways to obtain DLC film.
The key factors, which affect the deposition rate of DLC film, and how to achieve high speed rate have been analyzed in
this work. We prepared high-speed deposition DLC film samples on Germanium and Silicon by RF-PECVD, and the
relationships between deposition rate, RF power, vacuum degree and dimension size of substrates, deposition
temperature have been investigated. We found that when the deposition temperature rises, the deposition rate would rise
correspondingly but fall down later.
According to MIL-48616 environmental stability standards, the environmental and physical durability test results and the
curve of spectrum are also presented in detail in the paper.
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