Photoluminescence excitation of GaAs/AlGaAs single quantum wells - Vizcara, Sheryl Ann; Afalla, Jessica Pauline; de las Alas, Kaye Ann; Balgos, Maria Herminia; Jaculbia, Rafael; Salvador, Arnel; Somintac, Armando (Proceedings of the Samahang Pisika ng Pilipinas, 2012)