P‐49: New (CdxZn1−x)Ga2O4: Mn Green Emitting Phosphors for EL Displays

Abstract By introducing Cd, a new family of oxide thin film electroluminescent phosphors is presented. EL devices using (Cd x Zn 1−x )Ga 2 O 4 : Mn phosphors exhibit excellent green emission with peak wavelength of 504 nm, colour coordinates x = 0.8 and y = 0.69, and a peak brightness of 55 cd/m 2 and an efficiency of 0.55 lm/W at 40 V above threshold and driven at 60 Hz. When driven at 600 Hz, the maximum luminance at 40 V above threshold was 350 cd/m 2 with an efficiency of 0.48 lm/W. The introduction of Cd is shown to offer improved performance at lower processing temperatures than in the case of ZnGa 2 O 4 : Mn.