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Polymer-stabilised liquid crystal devices have found widespread use in intelligent displays and dimming glass applications, but their high driving voltage induces high power consumption and needs to be reduced. In this paper, we use several small phenylacetylene molecule materials with linear structures to reduce the driving voltage and obtain a high contrast ratio in reverse-mode polymer-stabilised cholesteric liquid crystals (RPSCLC). In particular, the drive voltage of the 8-micron-thick sample was reduced by nearly 40%, and the 20-micron-thick sample was reduced by nearly 45%. Additionally, we explore the physical mechanism through which various small phenylacetylene molecule materials improve the electro-optical properties, based on polymer network morphology effects. The results will be of great value for enhancing the use of RPSCLC devices. [ABSTRACT FROM AUTHOR]

Polymer stabilised liquid crystal (PSLC) is widely used in various applications such as smart windows due to its fast response speed and wide viewing angle. However, there are still limitations in terms of high driving voltage and poor contrast ratio. Therefore, there is a need to explore methods to enhance the electro-optical performance of PSLC devices. In this paper, the influence of a few types of styryl molecules on the electro-optical characteristics of PSLC was investigated. The experimental results demonstrated that the addition of an appropriate amount of small styryl molecules significantly reduced the driving voltage and improved the contrast ratio. For an 8-micron-thick sample, the threshold voltage and saturation voltage were approximately 5.3 V and 6.5 V, respectively, resulting in a contrast ratio of approximately 14.4. For a 20-micron-thick sample, the threshold voltage, saturation voltage, and contrast ratio were approximately 10.2 V, 14.5 V, and 109, respectively. Combined with the effects of different small styryl molecules on the morphology of polymer networks, the physical mechanism of different small styryl molecules to improve electro-optical properties was studied. The findings will contribute to the advancement of RPSCLC devices and their practical applications. [ABSTRACT FROM AUTHOR]