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: | 28-六月-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 |
顯示於類別: | 期刊論文 |