Electrical and optical properties of tris (8-hydroxyquinolinato) aluminum (Alqȝ) as electron tansporting layer in organic light emitting devices - Lim, Mei Yee; Mat Yunus, Wan Mahmood; Zainal Abidin; Kassim, Anuar; Dee, Chang Fu; Ismail, Abrar; Mahmud, Ekramul (Faculty of Science, Universiti Putra Malaysia, 2009)