| 新型双色有机电致磷光器件 |
| |
| 引用本文： | 王秀如,吴有智,陈昊瑜,朱文清,蒋雪茵,张志林,孙润光,丁国华,田禾.新型双色有机电致磷光器件[J].发光学报,2006,27(5):695-699. |
| |
| 作者姓名： | 王秀如 吴有智 陈昊瑜 朱文清 蒋雪茵 张志林 孙润光 丁国华 田禾 |
| |
| 作者单位： | 1. 上海大学, 材料科学与工程学院, 上海, 201800;2. 华东理工大学, 先进材料与精细化工研究所, 上海, 200237 |
| |
| 摘 要： | 所研究的有机电致磷光发光器件(OLED)选用了一种新型金属铱的化合物Ir(C6)2(acac),这种金属化合物由配位体香豆素C6和乙酰丙酮(acac)与金属铱化合形成。Ir(C6)2(acac)可同时作为电子传输材料和发光掺杂剂。比较香豆素C6和Ir(C6)2(acac)固体材料的光致发光谱,可见Ir(C6)2(acac)明显抑制了有机电致发光材料分子与分子之间的发光猝灭效应。采用ITO/TPD(N,N′-diphenyl-N,N′-bis(3-methyl-phenyl)-1,1′biphenyl-4,4′diamine)/Ir(C6)2(acac)/BAlq(bis(2-methyl-8-quinolinolato-N1,O8)-(1,1′-biphenyl-4-olato)aluminum)/Alq3aluminum/Liq(8-hydroxyquinolinelithium)/Al结构,可得到CIE(Commission Interationaled′Eclairage)值为x=0.43;y=0.40的橙红色发光器件,最高亮度可达3390cd/m2,最大电流效率为1.3cd/A。采用同样的器件结构以Ir(C6)2(acac)掺杂Alq3主体得到绿色发光器件,发光色的CIE坐标值为x=0.29;y=0.58,最高亮度可达8832cd/m2,最大电流效率为5.6cd/A。器件的发光机理研究表明Ir(C6)2(acac)的非掺杂器件发光以Ir(C6)2(acac)的三线态磷光为主,器件发光为橙色;在Alq3中的单掺杂器件以Alq3和Ir(C6)2(acac)的荧光为主,同时有小比例Ir(C6)2(acac)的三线态磷光成分存在,器件总体发光为绿色。
|
| 关 键 词： | 有机电致磷光 有机电致发光二极管(OLED) |
| 文章编号： | 1000-7032（2006）05-0695-05 |
| 收稿时间： | 2004-08-24 |
| 修稿时间： | 2006-03-21 |
Dual Color OLEDs Using a Novel Ir Complex |
| |
| WANG Xiu-ru,WU You-zhi,CHEN Hao-yu,ZHU Wen-qing,JIANG Xue-yin,ZHANG Zhi-lin,SUN Run-guang,DING Guo-hua,TIAN He.Dual Color OLEDs Using a Novel Ir Complex[J].Chinese Journal of Luminescence,2006,27(5):695-699. |
| |
| Authors: | WANG Xiu-ru WU You-zhi CHEN Hao-yu ZHU Wen-qing JIANG Xue-yin ZHANG Zhi-lin SUN Run-guang DING Guo-hua TIAN He |
| |
| Institution: | 1.School of Materials Science and Engineering, Shanghai University, Shanghai 201800, China;2. Institute of Advanced Materials and Fine Chemistry, East China University of Science & Technology, Shanghai 200237, China |
| |
| Abstract: | Organic light emitting diodes(OLED)employing an Ir complex with coumarin(C6)and acetylacetone(acac)ligands Ir(C6)_2(acac)are studied.This novel Ir complex can be used both as electron transporting material and light emitting dopant.Comparing the photoluminescence spectra of solid C6 and Ir(C6)_2-(acac),the self-quenching effect of molecules was found to be suppressed obviously.To a device structure of ITO(indium tin oxide)/TPD(N,N'-diphenyl-N,N'-bis(3-methyl-phenyl)-1,1'biphenyl-4,4'diamine)/Ir(C6)_2(acac)/BAlq(bis(2-methyl-8-quinolinolato-N1,O8)-(1,1'-biphenyl-4-olato)aluminum)/Alq_3(tris-(8-hydroxy-quinoline)aluminum)/Liq(8-hydroxyquinoline lithium)/Al,an orange color(Commission Interationale d'Eclairage(CIE)coordinates x=0.43;y=0.40)with a max luminance of 3 390 cd/m2 and an efficiency of 1.3 cd/A(quantum efficiency 1.3%)are achieved.Using Ir(C6)_2(acac)as dopant and Alq_3 as electron transporting host with the same structure,a green color(CIE coordinates x=0.29;y=0.58)and a max luminance of 8 832 cd/m2 and an efficiency of 5.6 cd/A(quantum efficiency 1.5%)are obtained.Mechanism of luminescence shows that the orange color luminescence of the device using Ir(C6)_2-(acac)as light-emitting layer origins from the triplet emission of Ir(C6)_2(acac)dominantly;the green color luminescence of the other device origins from the fluorescence of Alq_3,Ir(C6)_2(acac),and a little phosphorescence of Ir(C6)_2(acac). |
| |
| Keywords: | organic electrophosphorescence OLED |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《发光学报》浏览原始摘要信息 |
| 点击此处可从《发光学报》下载免费的PDF全文 |
|
