Substrate selection for the infra-red analysis in amorphous hydrogenated carbon films

The hydrogen concentration in amorphous materials plays an important role in determining its electrical and optical properties. The selection of a substrate is important to estimate the concentration of hydrogen and the nature of bonding in the amorphous media of the material. In view of this, we deposited amorphous carbon on different types of substrates and we found that quartz is the best substrate for IR analysis in the wavenumber range of 2400 cm- 1 and 3500 cm- 1