In this work, we present the use of reduced graphene oxide (rGO) as the counter electrode materials in dye-sensitized solar cells (DSSCs). rGO was first deposited on a fluorine-doped tin oxide glass substrate by screen-printing, followed by the post-treatment to remove excessive organic additives. We seminally investigated the effect of atmospheric pressure plasma jet (APPJ) treatment on the DSSC performance. A power conversion efficiency of 5.19% was reached when DSSCs with an rGO counter electrode was treated by APPJs in the ambient air for a few seconds. For comparison, it requires a conventional calcination process at 400°C for 15 min to obtain comparable efficiency. Scanning electron micrographs show that the APPJ treatment modifies the rGO structure, which may reduce its conductivity, in part, but simultaneously greatly enhance its catalytic activity. Combined with the rapid removal of organic additives by the highly reactive APPJ, DSSCs with APPJ-treated rGO counter electrode show comparable efficiencies to furnace-calcined rGO counter electrodes with greatly reduced process time. This ultra-short process time renders estimated energy consumption per unit area of 1.1 kJ/cm(2), which is only 1/3 of that consumed in a convention furnace calcination process. This new methodology is thus saving energy, cost and time, which is greatly beneficial to the future mass production.