有机薄膜电致发光器件的光学微腔效应

制备了以铝掺杂氧化锌（ＡＺＯ）透明导电膜为阳极的有机薄膜电致发光微腔器件，研究了垂直的光学法布里－珀罗微共振腔对有机器件的自发发射的微腔效应，发出了光谱窄化、发光强度增加及发射的角度依赖关系等现象。具有微腔结构的器件发射谱将高宽只有１４display status

Optical Microcavity Effectson Electroluminescence of Organic Thin Film Electroluminescent Devices

The organic thin film optical microcavity electroluminescent (TFEL) devices with aluminium doped zinc oxide (AZO) transparent conducting thin film as anode have been fabricated. Some effects of vertical Fabry—Perot microcavity on spotaneous emission of organic TFEL devices have been observed. These optical mierocavity effects are spectral narrowing, enhancement of emission intensity and angle dependence of emision. The half width of electroluminescent spectra of organic TFEL device with mierocavity structure iS about 14 nm while that of ordinary device without cavity structure is about 100 nm. The emision intensity of the devices with cavity structure is higher than that of device without cavity structure. The emission peaks of cavity devices are shifted to blue side by increasing the detection angle. Different colors ate obtained by changing the thickness of AZO layer or inserting different thickness of filler layer TiO2.