White organic light-emitting devices fabricated by spin-coating molecular materials

被引：5
作者：
Wang DongDong [2 ]
Wu ZhaoXin [1 ]
Zhang XinWen [1 ]
Jiao Bo [1 ]
Wang DaWei [1 ]
Hou Xun [1 ]
机构：
[1] Xi An Jiao Tong Univ, Sch Elect & Informat Engn, Key Lab Photon Technol Informat, Key Lab Phys Elect & Devices,Minist Educ, Xian 710049, Peoples R China
[2] Xi An Jiao Tong Univ, Sch Sci, Xian 710049, Peoples R China
来源：
CHINESE SCIENCE BULLETIN | 2010年 / 55卷 / 10期
关键词：
white organic light-emitting devices; small-molecular materials; mixed host; spin-coating; DIODES; LAYER; SINGLE;
D O I：
10.1007/s11434-009-0570-z
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
White organic light-emitting device (WOLEDs) employing molecular mixed host (MH) is demonstrated by spin-coating. The spin-coated film functions as light-emitting layer and hole transporting layer, with the former formed by spin-coating solution containing MH of NPB (N.N'-Bis(naphthalene-1-yl)-N,N'-bis(phenyl)-benzidine) and MADN (2-methyl-9,10-di(2-naphthyl) anthracene), blue dye (4,4'-bis[2-(4-(N,N-diphenylamino)phenyl)vinyl]biphenyl) and yellow dye (5,6,11,12-tetraphenylnaphacene). The performances of the devices made with different mixed ratio of MH are investigated. It is found that the device performances depends on the MH ratio, and under the optimal NPB:MADN ratio (60:40), the WOLEDs show a maximum luminance of 24 671 cd/m(2) and a current efficiency of 5.8 cd/A for the practical luminance of 1000 cd/m(2). The effect of MH ratio on device performances can be attributed to the difference of hole mobility between the NPB and MADN.
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收藏
页码：986 / 991
页数：6
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