Analysis of electro-optical properties of surfactant doped polymer dispersed liquid crystal

IF 2.3 4区化学 Q3 CHEMISTRY, PHYSICAL

Colloid and Polymer Science Pub Date : 2025-06-23 DOI:10.1007/s00396-025-05459-8

Wenya Gai, Ran An, Yue Han, Jiabo Zhang, Hui Zhang, Guili Zheng, Yanjun Zhang, Zhiguang Li

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Abstract

The phase transition temperature dependence of polymer dispersed liquid crystals (PDLCs) leads to a narrow operating temperature range, especially in low-temperature environments prone to transparency anomalies or a significant increase in the drive voltage and other issues, which seriously limits its promotion in outdoor displays, automotive dimming glass, and other wide-temperature range applications. The narrow working temperature range is one of the significant factors limiting the wide applications of PDLC. In this paper, we have prepared a surfactant (Span-80)-doped PDLC. The different concentration of Span-80 has a significant impact on the electro-optical properties of PDLC at different temperatures. Based on the experimental results, doping of Span-80 can reduce the driving voltage and shorten the recovery time of PDLC at low temperatures. This innovation not only enhances the operational stability of PDLC devices at low temperatures, but also provides a sustainable optoelectronic architecture with minimized power consumption and accelerated switching dynamics, which is particularly beneficial for smart windows operating in low-temperature environments. In addition, a ball lubrication model is proposed, and the results of the ideal model agree with the experimental results.

Graphical Abstract

Abstract Image

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表面活性剂掺杂聚合物分散液晶的电光性能分析

聚合物分散液晶（pdlc）的相变温度依赖性导致其工作温度范围窄，特别是在低温环境下容易出现透明度异常或驱动电压显著升高等问题，严重限制了其在户外显示器、汽车调光玻璃等宽温度范围应用中的推广。工作温度范围窄是限制PDLC广泛应用的重要因素之一。在本文中，我们制备了一种表面活性剂（Span-80）掺杂的PDLC。不同浓度的Span-80对PDLC在不同温度下的电光性能有显著影响。实验结果表明，pan-80的掺杂可以降低驱动电压，缩短PDLC在低温下的恢复时间。这一创新不仅提高了PDLC器件在低温下的工作稳定性，还提供了一种具有最小功耗和加速开关动态的可持续光电架构，这对在低温环境下工作的智能窗口特别有益。此外，提出了一种理想的球润滑模型，其结果与实验结果吻合较好。图形抽象

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来源期刊

Colloid and Polymer Science 化学-高分子科学

CiteScore

4.60

自引率

4.20%

发文量

111

审稿时长

2.2 months

期刊介绍： Colloid and Polymer Science - a leading international journal of longstanding tradition - is devoted to colloid and polymer science and its interdisciplinary interactions. As such, it responds to a demand which has lost none of its actuality as revealed in the trends of contemporary materials science.