物理化学学报 >> 2009, Vol. 25 >> Issue (05): 958-962.doi: 10.3866/PKU.WHXB20090524

研究论文 上一篇    下一篇

基于N-乙基咔唑-2-乙烯基-8-羟基喹啉锌的黄绿色有机电致发光器件的性能

丁桂英 姜文龙 常喜 华杰 韩强 欧阳新华 曾和平   

  1. 吉林师范大学信息技术学院, 吉林 四平 136000; 华南理工大学化学与化工学院, 广州 510641
  • 收稿日期:2008-12-22 修回日期:2009-01-30 发布日期:2009-05-04
  • 通讯作者: 姜文龙 曾和平 E-mail:jiang_wl@163.com; hpzeng@scut.edu.cn

Properties of Yellow-Green Organic Light-Emitting Devices Based on (E)-2-(2-(9-ethyl-9H-carbazol-3-yl)vinyl) Quinolato-Zinc

DING Gui-Ying, JIANG Wen-Long, CHANG Xi, HUA Jie, HAN Qiang, OUYANG Xin-Hua, ZENG He-Ping   

  1. College of Information Technology, Jilin Normal University, Siping 136000, Jilin Province, P. R. China; School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, P. R. China
  • Received:2008-12-22 Revised:2009-01-30 Published:2009-05-04
  • Contact: JIANG Wen-Long, ZENG He-Ping E-mail:jiang_wl@163.com; hpzeng@scut.edu.cn

摘要:

通过用一种既具有空穴传输特性又具有发光特性的新型荧光染料N-乙基咔唑-2-乙烯基-8-羟基喹啉锌((E)-2-(2-(9-ethyl-9H-carbazol-3-yl)vinyl) quinolato-zinc, CzHQZn)作为受主, 制备了结构为ITO/2T-NATA (30 nm)/CBP: 6%Ir(ppy)3:wCzHQZn(20 nm)/Alq3(50 nm)/LiF/Al(ITO: indium-tin oxide, 2T-NATA: 4,4',4''-{N,N-(2-naphthyl)-N-phenylamino}-triphenylamine, CBP: 4,4-N,N'-dicarbazole-biphenyl, Ir(ppy)3: factris (2-phenylpyridine) iridium, Alq3: tris(8-quinolinolato) aluminum; w 是CzHQZn 的质量分数)的黄绿色有机电致发光器件(OLEDs). 研究了掺杂体系在不同掺杂浓度(w=5%、10%、12%、15%)时的电致发光(EL)特性. 结果表明, CzHQZn 掺杂浓度为10%的器件在11 V 电压下实现了黄绿光发射, 色坐标为(0.4045, 0.5113), 最大发光亮度为16110 cd·m-2; 而在7 V电压下的最大发光效率为2.19 cd·A-1, 最大外量子效率为0.775%.

关键词: 有机电致发光器件, 锌金属配合物, 掺杂, 亮度, 外量子效率

Abstract:

We investigated the performance of yellow-green organic light-emitting devices (OLEDs) based on a novel material (E)-2-(2-(9-ethyl-9H-carbazol-3-yl)vinyl) quinolato-zinc (CzHQZn) with an emitting/hole-transporting layer as an acceptor. These devices were fabricated as follows: ITO/2T-NATA(30 nm)/CBP: 6% Ir(ppy)3: w CzHQZn (20 nm)/Alq3(50 nm)/LiF/Al (ITO: indium-tin oxide, 2T-NATA: 4,4',4''-{N,N-(2-naphthyl)-N-phenylamino}-triphenylamine, CBP: 4, 4-N,N'-dicarbazole-biphenyl, Ir(ppy)3: factris (2-phenylpyridine) iridium, Alq3: tris(8-quinolinolato) aluminum; w: mass fraction of CzHQZn). After studying the electroluminescence (EL) characteristics of these devices at different doping concentrations (w=5%, 10%, 12%, 15%), yellow-green OLEDs with 10% of CzHQZn were obtained with Commission International de L'Eclairage coordinates of (0.4045, 0.5113). The maximum luminance was 16110 cd·m-2 at an applied voltage of 11 V and the maximum luminous efficiency was 2.19 cd·A-1 at an applied voltage of 7 V with a maximumexternal quantumefficiency of 0.775%.

Key words: Organic light-emitting device, (E)-2-(2-(9-ethyl-9H-carbazol-3-yl)vinyl) quinolato-zinc, Doped, Luminance, External quantumefficiency

MSC2000: 

  • O644