標題: Highly efficient electrophosphorescent devices with saturated red emission from a neutral osmium complex
作者: Niu, YH
Tung, YL
Chi, Y
Shu, CF
Kim, JH
Chen, BQ
Luo, JD
Carty, AJ
Jen, AKY
應用化學系
Department of Applied Chemistry
公開日期: 28-Jun-2005
摘要: Highly efficient electrophosphorescent polymer light-emitting diodes (LEDs) with saturated red emission (Commission Internationale de L'Eclairage chromaticity coordinates exactly at x = 0.67, y = 0.33) are achieved by blending a novel neutral Osmium complex into a single-component bipolar polymer host that possesses balanced hole- and electron-transporting ability. By using a tetraphenylenebiphenyldiamine (TPD)-based cross-linkable hole-transport layer as well as a layer of 1,3,5-tris(N-phenylbenzimidazol-2-yl)benzene (TPBI) as an electron-tran sport layer, a device structure with both effective hole/electron injection and efficient carriers/excitons blocking or confinement at both electrode sides is constituted. In this way, external quantum efficiency 12.8% is reached the first time with an organometallic complex with heavy metal core other than iridium.
URI: http://dx.doi.org/10.1021/cm047709f
http://hdl.handle.net/11536/13570
ISSN: 0897-4756
DOI: 10.1021/cm047709f
期刊: CHEMISTRY OF MATERIALS
Volume: 17
Issue: 13
起始頁: 3532
結束頁: 3536
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