In this study, the effect of chiral dopant concentration on electro-optical and dielectric properties of a cholesteric liquid crystal (CLC) composite was investigated, and a dye-doped cholesteric liquid crystal (DDCLC) light shutter was developed. The electro-optical properties of samples were investigated by electro-optical switching method without the use of a polarizer. The dielectric characterization of the composites were also realized using dielectric spectroscopy technique with a wide frequency range. Significant electro-optical and dielectric parameters, such as transition voltages, complex dielectric constant, dielectric anisotropy and light transmission values of composites were found from the experimental data. The obtained results show that the chiral dopant causes changes in electro-optical and dielectric parameters of CLC, and the developed DDCLC light shutter can be used in optoelectronic device applications.

在这项研究中，研究了手性掺杂剂浓度对胆甾型液晶（CLC）复合材料的电光和介电性能的影响，并开发了一种染料掺杂胆甾型液晶（DDCLC）光闸。在不使用偏振器的情况下，通过电光切换方法研究了样品的电光特性。还使用具有宽频率范围的介电谱技术来实现复合材料的介电特性。从实验数据中发现了重要的电光和介电参数，例如转变电压，复介电常数，介电各向异性和复合材料的透光率。获得的结果表明，手性掺杂剂会导致CLC的电光和介电参数发生变化，