A facile route to fabricate stable reduced graphene oxide dispersions in various media and their transparent conductive thin films

► We demonstrate an easy way to prepare stable reduced graphene oxide (RGO) dispersions. ► Dispersion stability was controlled by simple adjustment of the degree of reduction and pH. ► Degree of reduction affected the surface polarity of RGO platelets. ► pH affected the surface potential of RGO platelets. ► Transparent conductive RGO thin films on various substrates were prepared using a spray coating.