▎ 摘　　要

Gold doped reduced graphene oxide (rGO) films prepared via hummer method have been utilised as counter electrode of dye-sensitised solar cell. The samples were subjected to various annealing times at 120 degrees C. The effect of annealing time on the dark current and photovoltaic performance has been investigated. The power conversion efficiency varies with annealing time. The highest efficiency of 0.155% was achieved by the device utilising gold doped rGO annealed for 45 min. This is due to the device employing this sample possesses the smallest leak current.