Titanium Dioxide (TiO2) Doping Copper (Cu) with Annealing Temperature Variation as Photoanode for Dye-Sensitized Solar Cells (DSSC)Enna Hasna Ainun Nuurul Ma'rifah, Agus Supriyanto, Tika Paramitha, Hendri Widiyandari, Agus Purwanto and Harry Kasuma Kiwi AliwargaE3S Web of Conf., 465 (2023) 02065DOI: https://doi.org/10.1051/e3sconf/202346502065