Oral: Temperature influence on the band-gap energy of reduced graphene-oxide nanoplatelets described with the Varshni model

Electrical properties on reduced Graphene Oxide (rGO) are of great interest in basic and applied sciences. Temperature influence on the band-gap energy (Eg(T)) in pyrolytic reduced graphene oxide (rGO) nanoplatelets described with the Varshni model is discussed here. Experimentally the electrical characterization of individual rGO nanoplatelets was carried out employing the I-V curves method at four electrical contacts of Pt nano-wires grown by focused electron-ion beam induced deposition system. The Eg(T) dependence was analyzed considering the Varshni, Bose-Einstein, Magnoogian-Wooley, Viña, et al., and Päsler phenomenological models. It was found that Varshni model described very well the Eg(T) behavior. These results suggest that individual rGO nanoplatelets can be excellent materials for developing advanced electronics for sensors and devices.