Reduction of graphene oxide (GO) can be used to improve the physical and electronic characteristics of rGO through de-oxygenation and restoration of π-conjugation. Here, the gradual and controllable thermal reduction of GO film formed by drop-casting method was carried out at low temperatures (100 − 350 °C) in ambient conditions with simultaneous electrical measurements. The conductivity of GO film depended on the level of reduction. Electrical measurements show a decrease and then an increase in electrical current after > 150 °C with a maximum change of five orders in current at 300 °C in comparison to GO. The role of functional groups on the evolution of electrical conductance during reduction has been investigated by correlating the FTIR spectroscopy and electrical conductivity. It is shown that the changes in conductivity is governed by two processes, first process is mainly associated with water and OH groups desorption and second process is mainly associated with restored graphene sp² network. The process, therefore, lends itself to the production of conductive reduced GO suitable for many applications including flexible electronics, TCO layer in solar cells, gas and temperature sensors.

氧化石墨烯 (GO) 的还原可用于通过脱氧和恢复 π 共轭来改善 rGO 的物理和电子特性。在这里，通过滴铸法形成的 GO 膜的逐渐和可控的热还原在低温（100 - 350°C）下在环境条件下进行，同时进行电测量。GO 薄膜的导电性取决于还原程度。电气测量显示，与 GO 相比，> 150 °C 后电流先减少然后增加，在 300 °C 时电流的最大变化为 5 个数量级。通过关联 FTIR 光谱和电导率，研究了官能团对还原过程中电导率演变的作用。²网络。因此，该过程有助于生产适用于许多应用的导电还原 GO，包括柔性电子产品、太阳能电池中的 TCO 层、气​​体和温度传感器。