Effects of reduction temperatures on morphological, optical, and electrical properties of reduced graphene oxide (rGO) thin films

Abstract In present work, reduced graphene oxide (rGO) thin films was produced by using modified hydrazine vapor. The experiment was conducted by varying the reduction temperatures to 50 ˚C, 60 ˚C, 70 ˚C and 80 ˚C respectively. This work’s aim is to investigate the effect of reduced temperature on the properties of rGO thin films. The thin films were characterized by using Scanning Electron Microscopy (SEM) and Fourier Transform Infrared (FTIR). Meanwhile, the electrical studies was performed by using current-voltage (I-V) characteristic. The electrical conductivity had increased from 2.35x10-5S/cm to 1.04x10-4S/cm as the temperature increases from 50 ˚C-70 ˚C. On the other hand, as the temperature reaches 80 ˚C, the electrical conductivity decreased to 6.49x10-5S/cm due to the defect that occurs at higher temperature. The morphological, and optical data also confirms that the properties of rGO is affected by the reduction temperature tested. Optimized rGO thin films can potentially be applied to electrical and electronic applications.