Sulhadi et al. 2025. Optical and Electrical Characterization of ZnO:Ga₂O₃ Thin Films Synthesized by MASP for Oxygen Gas Sensor Applications . Jurnal Penelitian Fisika dan Aplikasinya (JPFA). 15, 2 (Dec. 2025), 132–144. DOI:https://doi.org/10.26740/jpfa.v15n2.p132-144.