Observation of the quantum-confined Stark effect in a GaAs/AlGaAs p-i-n diode by room temperature photocurrent spectroscopy - Ison, Christine S.; Estacio, Elmer S.; Bailon, Michelle F.; Somintac, Armando S.; Salvador, Arnel A. (Proceedings of the 19th Samahang Pisika ng Pilipinas Philippine Physics Congress, 2001)