Fig. 4

High-resolution C1s XPS spectra of a GO and b ZnO/rGO-1 films. The XPS analysis further confirm the presence of rGO in ZnO/rGO thin film after thermal reduction process
High-resolution C1s XPS spectra of a GO and b ZnO/rGO-1 films. The XPS analysis further confirm the presence of rGO in ZnO/rGO thin film after thermal reduction process