Determination of exciton binding energy of AlGaAs/GaAs quantum well as a function of well width using photoluminescence and x-ray diffraction spectroscopy - Casco, Ma. Frantessa; Estacio, Elmer S.; Ison, Christine S.; Guiao, Luisito C.; Somintac, Armando S.; Salvador, Arnel A. (Proceedings of the 20th Samahang Pisika ng Pilipinas Physics Congress, 2002)