%0 Journal Article
%T Influence of Dopant Concentration on Electroluminescent Performance of Organic White-Light-Emitting Device with Double-Emissive-Layered Structure
%A WU Xiao-Ming
%A HUA Yu-Lin
%A YIN Shou-Gen
%A ZHANG Li-Juan
%A WANG Yu
%A HOU Qing-Chuan
%A ZHANG Jun-Mei
%A <br>吴晓明
%A 华玉林
%A 印寿根
%A 张丽娟
%A 王宇
%A 侯庆传
%A 张均媚
%J 中国物理快报
%D 2008
%I 
%X A novel phosphorescent organic white-light-emitting device (WOLED) with configuration of ITO/NPB/CBP: TBPe:rubrene/Zn(BTZ)2:Ir(piq)2(acac)/Zn(BTZ)2/Mg:Ag is fabricated successfully, where the phosphorescent dye bis (1-(phenyl)isoquinoline) iridium (III) acetylanetonate (Ir(piq)2(acac)) doped into bis-(2-(2-hydroxyphenyl) benzothiazole)zinc (Zn(BTZ)2) (greenish-blue emitting material with electron transport character) as the red emitting layer, and fluorescent dye 2,5,8,11-tetra-tertbutylperylene (TBPe) and 5,6,11,12-tetraphenyl-naphthacene (rubrene) together doped into 4,4'-N,N'-dicarbazole-biphenyl (CBP) (ambipolar conductivity material) as the blue-orange emitting layer, respectively. The two emitting layers are sandwiched between the hole-transport layer N,N'-biphenyl-N, N'-bis (1-naphthyl)-(1,1'-biphenyl)-4,4'-diamine (NPB) and electron-transport layer (Zn(BTZ)2). The optimum device turns on at the driving voltage of 4.5V. A maximum external quantum efficiency of 1.53% and brightness 15000cd/m2 are presented.The best point of the Commission Internationale de l'Eclairage (CIE) coordinates locates at (0.335, 0.338) at about 13V. Moreover, we also discuss how to achieve the bright pure white light through optimizing the doping concentration of each dye from the viewpoint of energy transfer process.
%K 78
%K 60
%K Fi
%K 85
%K 60
%K Jb<br>场致发光性能
%K 搀杂物
%K 双发射成层结构
%K 有机白光发射
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=E27DA92E19FE279A273627875A70D74D&aid=796069D02A14C6015BF3C65DDE9352CE&yid=67289AFF6305E306&vid=C5154311167311FE&iid=CA4FD0336C81A37A&sid=E39A3F4E3A67639B&eid=E42CAFB11D4BE21A&journal_id=0256-307X&journal_name=中国物理快报&referenced_num=0&reference_num=9