We developed a diffusion layer with a refractive index-matching layer added to a transparent nanoscale polymer-based structure to obtain its effective scattering effects. The diffusion layer had higher haze when the refractive index-matching layer to a higher refractive index was used. This diffusion layer was applied to conventional organic light-emitting diodes (OLEDs) and micro-cavity OLEDs (MC-OLEDs) to evaluate the characteristics. When a diffusion layer was applied to conventional OLEDs, the external quantum efficiency (EQE) was 31.1% higher than that of the device without a diffusion layer due to the reduction of the substrate mode, and the viewing angle characteristic was also improved. Then, when the diffusion layer was applied to the MC-OLEDs, all devices showed similar EQE values regardless of the presence or absence of the diffusion layer, and the viewing-angle-dependent characteristics were greatly improved by the diffusion layer. Furthermore, when the diffusion layer was used with polarizer film, the black color implementation was not affected by the polarizer film, proving that it is applicable to actual OLED display products.

我们开发了一种扩散层，在透明的纳米级聚合物基结构中添加了折射率匹配层，以获得有效的散射效果。当使用折射率匹配层至较高折射率时，扩散层具有较高的雾度。将该扩散层应用于常规有机发光二极管（OLED）和微腔OLED（MC-OLED），以评估其特性。当将扩散层应用于常规OLED时，由于基板模式的降低，外部量子效率（EQE）比没有扩散层的器件的外部量子效率高31.1％，并且视角特性也得到了改善。然后，当将扩散层应用于MC-OLED时，无论是否存在扩散层，所有器件均显示出相似的EQE值，并且扩散层极大地改善了与视角相关的特性。此外，当扩散层与偏振膜一起使用时，黑色实现不受偏振膜的影响，证明其可用于实际的OLED显示产品。