Versatile, Benzimidazole/Amine-Based Ambipolar Compounds for Electroluminescent Applications: Single-Layer, Blue, Fluorescent OLEDs, Hosts for Single-Layer, Phosphorescent OLEDs

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/28352

Title:	Versatile, Benzimidazole/Amine-Based Ambipolar Compounds for Electroluminescent Applications: Single-Layer, Blue, Fluorescent OLEDs, Hosts for Single-Layer, Phosphorescent OLEDs
Authors:	Chen,CH;Huang,WS;Lai,MY;Tsao,WC;Lin,JT;Wu,YH;Ke,TH;Chen,LY;Wu,CC
Contributors:	中央大學
Keywords:	LIGHT-EMITTING-DIODES;ELECTRON-TRANSPORT MATERIALS;ORGANIC MATERIALS;ENERGY-TRANSFER;ELECTROPHOSPHORESCENT DEVICES;CARBAZOLE DERIVATIVES;IRIDIUM COMPLEXES;CARRIER TRANSPORT;EFFICIENT;EMISSION
Date:	2009
Issue Date:	2010-06-29 19:46:50 (UTC+8)
Publisher:	化學研究所
Abstract:	A series of compounds containing arylamine and 1,2-diphenyl-1H-benz[d]imidazole moieties are developed as ambipolar, blue-emitting materials with tunable blue-emitting wavelengths, tunable ambipolar carrier-transport properties and tunable triplet energy gaps. These compounds 1: possess several novel properties: (1) they emit in the blue region with high quantum yields; (2) they have high morphological stability and thermal stability; (3) they are capable of ambipolar carrier transport; (4) they possess tunable triplet energy gaps, suitable as hosts for yellow-orange to green phosphors. The electron and hole mobilities of these compounds lie in the range of 0.68-144 x 10(-6) and 0.34-147 x 10(-6) cm(2) V-1 s(-1), respectively. High-performance, single-layer, blue-emitting, fluorescent organic light-emitting diodes (OLEDs) are achieved with these ambipolar materials. High-performance, single-layer, phosphorescent OLEDs with yellow-orange to green emission are also been demonstrated using these ambipolar materials, which have different triplet energy gaps as the host for yellow-orange-emitting to green-emitting iridium complexes. When these ambipolar, blue-emitting materials are lightly doped with a yellow-orange-emitting iridium complex, white organic light-emitting diodes (WOLEDs) can be achieved, as well by the use of the incomplete energy transfer between the host and the dopant.
Relation:	ADVANCED FUNCTIONAL MATERIALS
Appears in Collections:	[Graduate Institute of Chemistry] journal & Dissertation

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