title: Optical properties of white organic light-emitting devices fabricated utilizing a mixed CaAl12O19:Mn4+ and Y3Al5O12:Ce3+ color conversion layer.
abstract: White organic light-emitting devices (OLEDs) were fabricated by combining a blue OLED with a color conversion layer made of mixed Y3Al5O12:Ce3+ green and Ca2AlO19:Mn4+ red phosphors. The X-ray diffraction patterns showed that Ce3+ ions in the Y3Al5O12:Ce3+ phosphors completely substituted for the Y3+ ions and the Mn4+ ions in the CaAl12O19:Mn4+ phosphors completely substituted for the Ca2+ ions. Electroluminescence spectra at 11 V for the OLEDs fabricated utilizing a color conversion layer showed that the Commission Internationale de l'Eclairage coordinates for the Y3Al5O12:Ce3+ and CaAl12O19:Mn4+ phosphors mixed at the ratio of 1:5 and 1:10 were (0.31, 0.34) and (0.32, 0.37), respectively, indicative of a good white color.
authors.affiliation: Department Electronics and Computer Engineering, Hanyang University, Seoul 133-791, Korea.
authors.forename: H S
authors.initials: HS
authors.lastname: Jeong
authors.forename: S H
authors.initials: SH
authors.lastname: Kim
authors.forename: K S
authors.initials: KS
authors.lastname: Lee
authors.forename: J M
authors.initials: JM
authors.lastname: Jeong
authors.forename: T W
authors.initials: TW
authors.lastname: Yoo
authors.forename: M S
authors.initials: MS
authors.lastname: Kwon
authors.forename: K H
authors.initials: KH
authors.lastname: Yoo
authors.forename: T W
authors.initials: TW
authors.lastname: Kim