基于顶发射有机发光二极管的二阶微腔长度性能研究

在玻璃衬底生长金属铝作为不透明阳极,制备了结构为Al(100 nm)/TAPC(x nm)/TCTA(10 nm)/TCTA:Ir(ppy)3(10％,25 nm)/TPBi(30 nm)/LiF(2 nm)/Al(1 nm)/Ag(20 nm)/Alq3(y nm)作为顶发射的有机发光器件,其中x为30、130、16...

Second-order Microcavity Length Based on Top-emitting Organic Light-emitting Diodes

A Top-Emitting Organic Light-Emitting Diodes(TEOLEDs)with the configurations of Al(100 nm)/TAPC(x nm)/TCTA(10 nm)/TCTA:Ir(ppy)3(10%,25 nm)/TPBi(30 nm)/LiF(2 nm)/Al(1 nm)/Ag(20 nm)/Alq3(y nm)(x=30,130,160,170 and 180)(y=20,40,60 and 80)was fabricated.The experiments illustrate that photoelectric performance of the device can be improved by changing the thickness of the hole transport layer,which make the length of the device microcavity was in the enhancement zone of second-order microcavity effect.Moreover,by changing the light output coupling layer of the device,the transmittance and reflectance of the cathode of the device were changed,which can effectively improve the photoelectric performance of the device.A green TEOLEDs with the best photoelectric performance is achieved when the length of microcavity is 230 nm and the thickness of optical output coupling is 80 nm.The peak luminance,peak current efficiency and peak power efficiency of the TEOLEDs reach 25960 cd/m2,19.1 cd/A and 16.01 lm/W,respectively.