Deep-level transient spectroscopy measurement on GaAs-based p-i-n photovoltaic cell - Molleda, Hazel; Balgos, Ma. Herminia; Tumanguil, Mae Agatha; Prieto, Elizabeth Ann; Villamin, Ma. Emma; Awitan, Fritz Christian; Bailon-Somintac, Michelle; Somintac, Armando S.; Salvador, Arnel A. (Proceedings of the Samahang Pisika ng Pilipinas, 2009)