Development of liquid crystal electrochemiluminescent cells with dynamic polarization-controlling properties

为了建立一个设计指南，以实现高亮度和偏振比的液晶（LC）电致发光（ECL）单元与一个发射层掺杂有机荧光染料，基本的光发射性能进行了评估。结果表明，阳极金属功函数的降低对提高发光亮度和外量子效率是有效的，具有高光致发光偏振比的荧光染料在电致化学发光中也表现出较高的偏振比。此外，具有colgated发射层的LC-ECL电池显示在基板表面的法线方向上的偏振发射。

To establish a design guide for realizing high brightness and polarization ratio in liquid crystal (LC) electrochemiluminescent (ECL) cells with an emissive layer of a nematic LC layer doped with an organic fluorescent dye, fundamental light-emission properties have been evaluated. It was found that the decrease in the work function of anode metals is effective on the increase in the brightness and the external quantum efficiency and the fluorescent dyes with high photoluminescence polarization ratio also exhibit high polarization ratio in the electrochemiluminescence. Furthermore, LC-ECL cells with a colgated emissive layer revealed polarization emission in the normal direction of the substrate surface.