| Abstract [eng] |
In this dissertation, a relationship between the mechanical deformation and the electrical properties are thoroughly studied in the graphene based structures consisting of CVD graphene-monolayer and thin metal films is presented. Graphene based structures are frequently used for manufacturing of photodetectors, optical modulators, gas sensors. In this work, the optimization of thermal processing of graphene devices is presented. It was shown that the charge transport channel is formed in the vertical contact construction during a relatively short, few-minute process. This behavior is opposite to the long processes described in the literature lasting an hour or more. Also, it was demonstrated, that the strain/stress deformations are detected in the graphene sheet in sufficiently long distances from the metal film contact edges, unlike that is quite unexpected the theoretical model based on the interaction substrate-graphene calculations is considered. In addition, the parameters describing the distortions of the individual area of the contact edge zone were examined. In this dissertation was shown that changes due to the drift are more significant in the contact area than in the graphene sheet on the insulator. |
