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In this work, we present the development of a Pt/graphene/SiC device for hydrogen gas sensing. A single layer of graphene was deposited on 6H-SiC via chemical vapor deposition. The presence of graphene C-C bonds was observed via X-ray photoelectron spectroscopy analysis. Current-voltage characteristics of the device were measured at the presence of hydrogen at different temperatures, from 25°C to...
In polyimide films, there occur breaks in the reciprocal-temperature dependence of the log-electrical conductivities. It indicates that the multiple transitions and relaxations of the polyimide films are reflected in the above mentioned relationship. This presents us the possibility to determine the rule of variations of the electrical conductivities of the polymer with temperatures and is of interest...
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