title: Effect of Triplet Harvesting on the Lifetime Based on Fluorescence and Phosphorescence in Hybrid White Organic Light Emitting Diodes.
abstract: We investigated efficient hybrid white organic light emitting diodes (WOLEDs) apply to triplet harvesting (TH) concept based on three complementary colors by mixing containing blue fluorescent emitter with phosphorescent emitters. The TH is to transfer these triplet excitons from a fluorescence to a phosphorescence, where they can decay radiatively. We fabricated several hybrid WOLEDs, having various emitting layer structures with blue fluorescent emitter and red, green phosphorescent emitter. The WOLED exhibited maximum luminous efficiency of 9.02 cd/A, and a maximum external quantum efficiency of 4.17%. The WOLED showed a highly color-stable white emission with the Commission International de L'Éclairage chromaticity of (0.38, 0.36) at 1,000 cd/m2.
authors.forename: Eun
authors.initials: E
authors.lastname: Lee
authors.forename: Ho Won
authors.initials: HW
authors.lastname: Lee
authors.forename: Hyung Jin
authors.initials: HJ
authors.lastname: Yang
authors.forename: Yong
authors.initials: Y
authors.lastname: Sun
authors.forename: Jae Woo
authors.initials: JW
authors.lastname: Lee
authors.forename: Kyo Min
authors.initials: KM
authors.lastname: Hwang
authors.forename: Woo Young
authors.initials: WY
authors.lastname: Kim
authors.forename: Young Kwan
authors.initials: YK
authors.lastname: Kim
mesh_terms: D005453:Fluorescence; D008027:Light; D013057:Spectrum Analysis / Q000379:methods