DCJTB掺杂浓度对OLED器件性能的影响(英文)

Effects of DCJCB Doping Concentration on Performances of Organic Light-Emitting Diodes

通过在发光层ADN∶TBPe∶DCJTB中改变DCJTB的掺杂浓度,得到了一种高效的白光OLED器件。考察了同一掺杂浓度TBPe下不同浓度的DCJTB的器件性能,发现当DCJTB掺杂浓度为1%(质量分数)时,器件获得最大电流效率6.6cd/A和最大功率效率3.21lm/W,此时亮度为10520cd/m2,对应的CIE坐标为(0.3186,0.3520)。通过改变DCJTB浓度,能够获得不同的器件颜色。

A highly efficient white organic light-emitting device could be achieved by changing doping concentration in the emissive layer of the device containing 9,10-di-（2-naph-thyl）anthracene（ADN）,2,5,8,11-tetra-butyl-perylene（TBPe）and 4-（Dicyanomethylene）-2-t-butyl6-（1,1,7,7-tetramethylj-ulolidy1-9-enyl）-4H-pyran（DCJTB）.By examining the device characteristics of uniformly doped devices with varying dopant concentration,it is found that the device with the doping concentration（mass fraction）of 1% DCJTB gains the maximum current（ηL）and power（ηP）efficiencies,which are 6.6cd/A and 3.21lm/W at luminance of 10 520cd/m2 with CIE coordinates of（0.318 6,0.352 0）.The different color of devices can be obtained by changing doping concentration of DCJTB.