基于ADN的非掺杂高效蓝色OLED器件

High Efficient Undoped Blue Organic Light-emitting Diodes Based on ADN

采用真空蒸镀的方法,制备了以ADN为发光层的高效率非掺杂蓝色有机电致发光器件。器件的结构为ITO/2T-NATA(15 nm)/NPBx(15 nm)/ADN(25+dnm)/BCP(8 nm)/Alq3(30 nm)/LiF(0.5 nm)/Al。通过调整ADN层的厚度,研究了器件的发光性能。测试结果表明,器件在6 V电压时电流效率达到最大,为2.77 cd/A;在16 V时亮度达到最大,为7 227 cd/m2。当ADN的厚度为30 nm、器件的电压从5 V变化到16 V时,色坐标在(0.21,0.32)至(0.19,0.29)之间,均在蓝光区域。

Using ADN as the emitting layer, high efficient undoped blue organic light-emitting diodes（OLEDs） with a typical structure of （ITO）/ 2T-NATA（15 nm）/ NPBx（15 nm）/ ADN（25＋d nm）/BCP（8 nm）/Alq3 （30 nm）/LiF（0.5 nm）/Al were fabricated via thermal vacuum deposition method. This device has a maximum luminous efficiency of 2. 77 cd/A at 6 V and maximum luminance of 7 227 cd/m62 at 16 V. The CIE coordinates of the device are within the blue region when the thickness of ADN is 30 nm and the voltage changes among the range of 6-16 V.