基于红光染料掺杂的有机电压调制发光器件

Voltage-tunable organic light emitting device based on red dopant

制备了一种电压调制有机发光二极管(OLED),结构为ITO/CuPc(10nm)/NPB(70nm)/MADN(30nm)/MADN∶DCM(2%(质量分数),10nm)/BCP 7nm/ALQ(30nm)/LiF(0.5nm)/Al(100nm)。通过调节DCM的掺杂浓度和MADN∶DCM厚度,发光颜色发生了随电压的连续变化。该器件的起亮电压在3V左右,当驱动电压为16V时最大亮度达到16652cd/m2,电流效率在8V时达到最大为5.78cd/A。

We fabricate a voltage-tunable organic light emitting device based on structure of ITO/CuPc（10nm）/NPB（70nm）/MADN（30nm）/MADN∶DCM（2wt%,10nm）/BCP 7nm/ALQ（30nm）/LiF（0.5nm）/Al（100nm）.The device displays a continuous change of color depending on the applied bias by adjusting the DCM doping concentration and the film thickness of MADN doped with DCM.The turn on voltage of the device is about 3V.A maximum luminance of 16652cd/m^2 at the direct driving voltage of 16V,with a current efficiency of 5.78cd/A at 8V is achieved.