Umar, Marjoni Imamora Ali. “Graphene-Au Film Synthesized from GrO in Au-Aquaeus Solution As Counter Electrode For DSSC Application”. Lensa: Jurnal Kependidikan Fisika, vol. 7, no. 2, Dec. 2019, pp. 24-30, doi:10.33394/j-lkf.v7i2.2644.