三重态激子俘获对基于混合白光有机发光二极管中荧光和磷光的寿命的影响。

Effect of Triplet Harvesting on the Lifetime Based on Fluorescence and Phosphorescence in Hybrid White Organic Light Emitting Diodes.

作者信息

Lee Eun, Lee Ho Won, Yang Hyung Jin, Sun Yong, Lee Jae Woo, Hwang Kyo Min, Kim Woo Young, Kim Young Kwan

出版信息

J Nanosci Nanotechnol. 2016 Mar;16(3):2701-5. doi: 10.1166/jnn.2016.11074.

DOI:10.1166/jnn.2016.11074

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.

摘要

我们研究了基于三原色互补色混合含蓝色荧光发射体与磷光发射体应用于三线态激子捕获（TH）概念的高效混合白色有机发光二极管（WOLED）。TH是将这些三线态激子从荧光转移到磷光，在磷光中它们可以辐射衰变。我们制备了几种具有不同发射层结构的混合WOLED，这些结构包含蓝色荧光发射体以及红色、绿色磷光发射体。该WOLED表现出9.02 cd/A的最大发光效率以及4.17%的最大外量子效率。在1000 cd/m² 时，该WOLED呈现出高度颜色稳定的白色发射，其国际照明委员会色度为（0.38, 0.36）。