Graphene/metal nanocomposites have shown a strong potential for use in electronic applications. In particular, the combination of silver nanowires (AgNWs) with graphene derivatives leads to the formation of an efficient conductive network, thus improving the electrical properties of a composite. This work focused on developing highly conductive hydrophilic hybrids of simultaneously functionalized and reduced graphene oxide (f-rGO) and AgNWs in different weight ratios by following two different synthetic routes: (a) the physical mixture of f-rGO and AgNWs, and (b) the in situ reduction of GO in the presence of AgNWs. In addition, the role of AgNWs in improving the electrical properties of graphene derivatives was further examined by mixing AgNWs with a hybrid of few-layered graphene with functionalized multiwalled carbon nanotubes (FLG/MWNT-f-OH). The studied materials showed a remarkable improvement in the overall electrical conductivity due to the synergistic effect of their components, which was proportional to the percentage of Ag and dependent on the procedure of the hybrid formation. One of the f-rGO/AgNWs composites was also selected for the preparation of gravure printing inks that were tested to determine their rheological and printing properties. All of the f-rGO/AgNWs composites were shown to be very promising materials for use as conductive inks for flexible electronics.

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Thin films of CdSe semiconductors electro deposited from acid aqueous electrolytes onto Ti sub strates have been developed using periodically modified currents, such as pulse current. The products obtained were fully characterized and their photoelectric behavior was studied using a photo electro chemical cell. All deposits obtained by pulse electrolysis exhibit some differences in their structure, surface morphology and photoelectric properties, depending on the imposed pulse current parameters such as pulse frequency and duty cycle. It was also found that increased photoelectrochemical efficiencies are observed to so higher pulse frequencies as more negative deposition potentials are applied and vice-versa.

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