Activated Carbon Films from Water Hyacinth Waste for Stable and Sustainable Counter-Electrode Application in Dye-Sensitized Solar Cells. Indonesian J. Sci. Technol [Internet]. 2025 Jul. 8 [cited 2025 Oct. 31];10(1):133-44. Available from: https://ejournal.kjpupi.id/index.php/ijost/article/view/410