title: Color stability of white organic light emitting devices with a color conversion layer utilizing CdSe/ZnS quantum dots and phosphors dispersed in polymethylmethacrylate.
abstract: White organic light-emitting devices (WOLEDs) were fabricated by combining a blue emitting organic light-emitting devices (OLEDs) and a color conversion layer made of yttrium aluminum garnet phosphors and CdSe/ZnS quantum dots (QDs) embedded into polymethylmethacrylate. When the ratio of phosphors and QDs changed, a good color balance was achieved at a ratio of 1:5, and the maximum luminance of 18.21 cd/m2 was obtained. As the applied voltage varied from 12 to 16 V, Commission Internationale de l'Eclairage coordinates shifted only slightly from (0.32, 0.34) to (0.30, 0.33), indicating a good color stability.
authors.affiliation: Department of Information Display Engineering, Hanyang University, Seoul 133-791, Korea.
authors.forename: W J
authors.initials: WJ
authors.lastname: Kwon
authors.forename: S H
authors.initials: SH
authors.lastname: Kim
authors.forename: K S
authors.initials: KS
authors.lastname: Lee
authors.forename: D C
authors.initials: DC
authors.lastname: Choo
authors.forename: S W
authors.initials: SW
authors.lastname: Kim
authors.forename: S W
authors.initials: SW
authors.lastname: Kim
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