Abstract

Chromium containing amorphous hydrogenated carbon thin films was deposited using a dc sputter deposition technique under various mixtures of methane and Ar. The microstructure, composition, and optical properties of the resulting films were investigated. We show that a-C:H/Cr thin films exhibiting absorptance in certain wavelengths are greater than 95% and the average absorptance was 86% in the 0.3 to 2.5 µm wavelength can be obtained by using appropriate methane/Ar ratios and deposition times.

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