▎ 摘　　要

We report the stability-improved reduced graphene oxide (rGO) sensors via resistance initialization of laser irradiation. A graphene oxide aqueous solution drop-casted was dried and reduced by laser irradiation to form rGO. The rGO sensors deposited between electrodes were used to measure the change of resistance every second in real time for temperature and gas sensing. However, the initial resistance of the rGO sensor was gradually increased whenever the temperature was swept. After three times temperature sweep the sensitivity was increased 44.6% due to the combination of oxygen-functional groups on rGO surface. On the other hand, initialization laser irradiation before temperature sweep made the sensitivity of rGO senor increase 11.6% in the same condition. Furthermore, when the rGO sensor was measured for Methyl salicylate (MeSA) gas sensing, initialization laser treatment stabilized the initial resistance and increased the sensitivity. Therefore, initialization laser treatment for surface recovery could remove the residual MeSA molecules attached to the surface of rGO.