Temperature dependent photoluminescence of Copper oxide nanostructures synthesized via direct thermal oxidation - Cafe, Arven I.; Husay, Horace Andrew F.; Sayson, Luce Vida A.; Vasquez, John Daniel E.; Salvador, Arnel; Estacio, Elmer; Somintac, Armando (Proceedings of the 34th Samahang Pisika ng Pilipinas Physics Conference, 2016)