▎ 摘　　要

Recently, graphene oxides (GOs), reduced GO (rGO), and their derivatives have been focused on as a superior flexible material due to having easy processability and high carrier mobility. Here, we report an inexpensive green synthesis of GO/rGO at a relatively low temperature of 150 degrees C. The scanning electron microscopy (SEM)/energy-dispersive X-ray (EDX), X-ray diffraction (XRD), Raman, Fourier transformed IR (FTIR), and UV-visible spectroscopy confirm the successful fabrication of rGO with an enhanced carbon-0carbon (sp(2)/sp(3)) component with an enhanced carbon-to-oxygen ratio (C/O) from 0.93 to 2.76. Here, a work function tuning of 5.6-4.5 eV, a bandgap modulation of 3.93-2.63 eV, a charge carrier density tuningfrom 1.12 x 10(16) to 1.14 x 10(21) cm(-3), and a mobility tuning from 1.51 x 10(-2) to 59.663 cm(2)/V.s are made through its controlled reduction of GOs, which are much better than the results obtained at high temperature >1000 degrees C. The flexible nature of both electronic and optical properties of rGO nanostructures assures it as an excellent material for electronics and optoelectronics devices.