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Red organic light emitting device with improved performance using a novel fluorescent dye codoped with phosphor-sensitizer

ISSN号：1674-862X
期刊名称：《电子科技学刊：英文版》
时间：0
分类：O484[理学—固体物理;理学—物理] TQ617.3[化学工程—精细化工]
作者机构：[1]State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Information, University of Electronic Scienceand Technology of China (UESTC), Chengdu 610054, China
相关基金：This work was supported by the National Natural Science Foundation of China （NSFC）（60736005）, Foundation for Innovative Research Groups of the NSFC （60721001）, National High-Tech Research and Development Program of China （2007AA03Z424）, Program for New Century Excellent Talents in University through（NCET-06-0812）, and Young Excellence Project of UESTC （060206）.

作者： WEN Wen YU JunSheng HU Yuan JIANG YaDong[1]

关键词：荧光染料, 共掺杂, 器件性能, 有机发光, 磷光, 增敏剂, 传统设备, 构成比例, organic light emitting devices, red emission, phosphor-sensitizer, DCDDC, energy transfer

中文摘要：

有效红器官的轻射出的设备由复合 fluorescent-phosphor-sensitized 排放层组成了被制作。新奇的红荧光灯染料， 3-(dicyanomethylene )-5,5-dimethyl-1-(4-dimethylamino-styryl) cyclohexene (DCDDC ) ，和绿发磷光的染料， fac tris (2-phenylpyridine ) 铱[红外(ppy ) 3 ] 是进主人材料 4,4-N 的 codoped， N-dicarbazolebiphenyl (CBP ) 。由调整做系统的部件比率，有红外(ppy ) 3:DCDDC 的不同集中比例的一系列设备被构造。结果证明有 0.2 wt% DCDDC 的设备在 0.1 mA/cm2 的当前的密度有 2.12 lm/W 的最大的功率效率(p ) ，它比的高是大约 38% 常规荧光灯设备。什么时候在 4 mA/cm2 (100 cd/m2 ) 和 52 mA/cm2 (1000 cd/m2 ) 的当前的密度， p 百分比分别地比常规设备的高是大约 160% 和 143% 。在有委员会共产国际歌 de lEclairage 的 615 nm 的一座山峰的稳定的红轻排出物近协调这个区域(0.56， 0.42 ) 在宽偏爱，范围也被获得。改进表演从主人被归因于有效多重阶段的精力转移到客人和损失机制的抑制。

英文摘要：

Efficient red organic light-emitting device consisted of a compound fluorescent-phosphor-sensitized emission layer was fabricated. A novel red fluorescent dye, 3-（dicyanomethylene）-5,5-dimethyl-1-（4-dimethylamino-styryl） cyclohexene （DCDDC）, and a green phosphorescent dye, fac tris（2-phenylpyridine） iridium [Ir（ppy）3] were codoped into a host material 4,4＇-N,N＇-dicarbazotebiphenyl （CBP）. By adjusting the component ratio of doping system, a series of devices with different concentration proportion of Ir（ppy）3：DCDDC were constructed. The results demonstrated that the device with 0.2 wt% DCDDC had a maximum power efficiency （ηp） of 2.12 lm/W at a current density of 0.1 mA/cm^2, which was about 38% higher than that of conventional fluorescent device. When at a current density of 4 mA/cm^2 （100 cd/m^2） and 52 mA/cm^2 （1000 cd/m^2）, the r/p percentage was about 160% and 143% higher than that of conventional device, respectively. A stable red light emission at a peak of 615 nm with Commissions Internationale de l＇Eclalrage coordinates near the region of （0.56, 0.42） in a wide bias range was also obtained. The improved performances were attributed to the efficient multiple-stage energy transfer from the host to the guest and the suppression of loss mechanism.