Optical characterization of tin oxide-coated porous silicon - Lopez, Joybelle M.; Cafe, Arven I.; Ballesteros, Laureen Ida M.; Lopez, Lorenzo; Faustino, Maria Angela B.; Salvador, Arnel A.; Somintac, Armando S. (Proceedings of the 33rd Samahang Pisika ng Pilipinas Physics Congress, 2015)