用于液晶背光源的双层掺杂白光OLED  

A Kind of White OLED Based Using Double Doping Emitting Layer for LCD Backlighting

作　　者：吴空物[1,2] 华玉林[1,2] 张国辉[1,2] 朱飞剑[1,2] 牛霞[1,2] 吴晓明[1,2] 印寿根[1,2] 邓家春[1,2] 

机构地区：[1]天津理工大学材料物理研究所 [2]天津市光电显示材料与器件重点实验室,天津300191

出　　处：《光电子．激光》2007年第5期515-518,共4页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金资助项目(60576038);中国国家自然科学基金;英国皇家学会联合资助项目;天津市"材料物理与化学"重点学科资助项目

摘　　要：制备了一种双层掺杂的白光有机电致发光器件（OLED）,其中BAlqTBPe掺杂层发蓝光,Zn（BTZ）2Ru-brene掺杂层发橙色光。器件在驱动电压5V时就能发出白光,且在驱动电压5-15V内色坐标变化较小,均在白光色域区,在15V时亮度达到8572cd/m^2,在电流密度50mA/cm^2时量子效率最高达到0.9%。对该白光OLED的发光和电学性能以及发光机理进行了深入的研究和探讨,进而制备了应用于液晶显示（LCD）背光源的近白光OLED,有效面积达到3cm×3cm,在10V时平均亮度达到-1300cd/m^2,发光亮度均匀性为90%,色度均匀性较好,很好地符合了LCD对背光源的要求。A novel white organic light-emitting device（OLED） was realized by using a TBPe-doped BAlq layer to provide blue emission and a rubrene-doped Zn（BTZ）2 layer to provide red emission for color mixing. The device had a very low starting voltage at 5 V. By appropriately controlling the doping concentration, the white light OLED achieved a high brighmess of 8 572 cd/m^2 at 15 V,and the maximum external efficiency of 0. 9M at 50 mA/cm^2. The commission intemationable de 1＇ Eclairage coordinates of the emitted light was stable in the white area at voltages from 5 to 15 V. Then,we analyzed the the principles of the white device. Besides,we make this kind of white OLED to match with LCD screen. The maximal active area achieved 3 cm^3 crn. The average brightness of the device reached 1300 cd/m^2 at 10 V,and the unifomaization of brightness was 90M. So it can be concluded that the white OLED well satisfied the need for LCDhacklighting.

关 键 词：白光有机电致发光器件(OLED) 双层掺杂 液晶显示(LCD)背光源 BAlq TBPe Zn(BTZ)2 Ru-brene 

分 类 号：TP383.1[自动化与计算机技术—计算机系统结构]