紫外光强对聚合物分散液晶电光特性的影响

陈菲; 徐荣青; 李若舟; 严静

doi:10.3788/YJYXS20183308.0631

您当前的位置：

首页 >

文章列表页 >

紫外光强对聚合物分散液晶电光特性的影响

材料与器件 | 更新时间：2020-07-06

- 紫外光强对聚合物分散液晶电光特性的影响
- Effect of UV intensities on electro-optic properties of polymer dispersed liquid crystal
- 液晶与显示 2018年33卷第8期页码：631-637
- 作者机构：
  
  1.南京邮电大学电子与光学工程学院微电子学院, 江苏南京 210023
  2.南京邮电大学射频集成与微组装技术国家地方联合工程实验室, 江苏南京 210023
- 作者简介：
  
  [ "陈菲(1994-), 女, 安徽安庆人, 硕士研究生, 2016年于南京工程学院获得学士学位, 主要从事聚合物分散液晶方面的研究。E-mail:icf_1230@163.com" ]
  [ "徐荣青(1966-), 男, 江苏扬州人, 博士, 教授, 1997年于华中科技大学获得硕士学位, 2005年于南京理工大学获得博士学位, 从事基于机器视觉与柔性触觉的人工智能的研究。E-mail:xurq@njupt.edu.cn" ]
  [ "严静(1987-), 女, 江苏苏州人, 博士, 讲师, 2016年于东南大学获得博士学位, 主要从事液晶显示及液晶电光器件方面的研究。E-mail:jing.yan@njupt.edu.cn" ]
- 基金信息：
  
  Natural Science Foundation of China(61704090);NUPTSF(NY218020);NUPTSF(NY217124);NUPTSF(NY217123);National and Local Joint Engineering Laboratory of RF Integration and Micro-Assembly Technology(KFJJ20170204);National and Local Joint Engineering Laboratory of RF Integration and Micro-Assembly Technology(KFJJ20170307);Natural Science Foundation of the Higher Education Institutions of Jiangsu Province(17KJB510040);Natural Science Foundation of the Higher Education Institutions of Jiangsu Province(17KJB510041);Natural Science Foundation of Jiangsu Province(BK20170903);Natural Science Foundation of Jiangsu Province(BK20170908);国家自然科学基金青年科学基金(61704090);南京邮电大学校级科研基金(NY218020);南京邮电大学引进人才科研启动基金资助(NY217124);南京邮电大学引进人才科研启动基金资助(NY217123);射频集成与微组装技术国家地方联合工程实验室开放课题(KFJJ20170204);射频集成与微组装技术国家地方联合工程实验室开放课题(KFJJ20170307);江苏省高等学校自然科学研究面上项目(17KJB510040);江苏省高等学校自然科学研究面上项目(17KJB510041);江苏省自然科学基金青年基金(BK20170903);江苏省自然科学基金青年基金(BK20170908)
- DOI：10.3788/YJYXS20183308.0631
  中图分类号： TP141.9;O753+.2
- 收稿日期：2018-04-20，
  
  录用日期：2018-5-5，
  
  纸质出版日期：2018-08-05
- 稿件说明：
移动端阅览
陈菲, 徐荣青, 李若舟, 等. 紫外光强对聚合物分散液晶电光特性的影响[J]. 液晶与显示, 2018,33(8):631-637.

Fei CHEN, Rong-qing XU, Ruo-zhou LI, et al. Effect of UV intensities on electro-optic properties of polymer dispersed liquid crystal[J]. Chinese journal of liquid crystals and displays, 2018, 33(8): 631-637.
陈菲, 徐荣青, 李若舟, 等. 紫外光强对聚合物分散液晶电光特性的影响[J]. 液晶与显示, 2018,33(8):631-637. DOI： 10.3788/YJYXS20183308.0631.

Fei CHEN, Rong-qing XU, Ruo-zhou LI, et al. Effect of UV intensities on electro-optic properties of polymer dispersed liquid crystal[J]. Chinese journal of liquid crystals and displays, 2018, 33(8): 631-637. DOI： 10.3788/YJYXS20183308.0631.

摘要

聚合物分散液晶（PDLC）是液晶微滴分散在聚合物基体中形成的一种具有优异电光性能的材料，PDLC的电光特性对基于PDLC的电光器件的性能具有显著影响。本文对紫外固化光强对PDLC电光特性的影响进行研究。本研究使用紫外照射引发的聚合物诱导相分离方法制备PDLC。在4个不同紫外固化光强（1 mW/cm

、1.8 mW/cm

、3 mW/cm

和9 mW/cm

）条件下制备PDLC样品，并对4个样品的电光特性如电压-透过率、响应时间和迟滞效应进行研究，并对实验结果给出了分析。实验结果表明：随着紫外固化光强的增加，PDLC的阈值电压和饱和电压增加，开态响应时间

上升，关态响应时间

off

下降，同时对于高紫外光强聚合制备的样品迟滞效应也更加明显。本研究表明可以通过改变制备过程中的紫外光强来优化PDLC的电光特性，从而获得性能优异的基于PDLC的电光器件。

Abstract

Polymer Dispersed Liquid Crystal (PDLC) is a high performance electro-optic material. The electro-optical properties of PDLC have great influence on the performance of applications based on PDLC. In this paper

we studied the effect of UV intensities on electro-optic properties of PDLC. PDLC samples are fabricated by polymer induced phase separation (PIPS) method initiated by UV irradiation. Four PDLC samples were prepared using four UV light intensities of 1 mW/cm

1.8 mW/cm

3 mW/cm

and 9 mW/cm

. The electo-optical properties of voltage-transmittance curve

response time and hysteresis effect are studied. With the increase of the UV intensity

the threshold voltage and saturation voltage increase. The rise time increases while the decay time decreases for high intensity UV irradiation. The hysteresis effect also becomes severe. This work suggests that it is possible to optimize the electro-optical properties of PDLC by adjusting the UV intensities and obtain PDLC based devices that possess good electro-optical performance.

关键词

Keywords

references

DOANE J W, GOLEMME A, WEST J L, et al. Polymer dispersed liquid crystals for display application[J]. Journal Molecular Crystals and Liquid Crystals Incorporating Nonlinear Optics, 1988, 165(1):511-532.

STEIN R S, SRINIVASARAO M. Light-scattering studies of liquid crystal dispersions[J]. SPIE, 1993, 1911:132-153.

黄子强.液晶显示原理[M].2版.国防工业出版社, 2008:78-192.

HUANG Z Q. Principle of Liquid Crystal Display[M]. 2nd ed. Beijing:National Defense Industry Press, 2008:78-192. (in Chinese)

顾玲娟, 郑继红, 陈刚, 等.聚合物分散液晶(PDLC)光开关研究[J].光学仪器, 2002, 24(3):28-33.

GU L J, ZHENG J H, CHEN G, et al. The study of polymer-dispersed liquid crystal (PDLC) optical switching[J]. Optical Instruments, 2002, 24(3):28-33. (in Chinese)

MURRAY J, MA D K, MUNDAY J N. Electrically controllable light trapping for self-powered switchable solar windows[J]. ACS Photonics, 2016, 4(1):1-7.

LIU J H, WU F T. Synthesis of photoisomeric azobenzene monomers and model compound effect on electric-optical properties in PDLC films[J]. Journal of Applied Polymer Science, 2010, 97(3):721-732.

高峰, 钱俊, 刘慧慧, 等.阻聚剂对聚合物分散液晶电光性能的影响[J].液晶与显示, 2013, 28(4):495-500.

GAO F, QIAN J, LIU H H, et al. Effect of polymerization inhibitor on electro-optical properties of polymer dispersed liquid crystal films[J]. Chinese Journal of Liquid Crystals and Displays, 2013, 28(4):495-500. (in Chinese)

胡晓阳, 杜鑫, 汪映寒.聚合物基体分子量及极性对聚合物分散液晶迟滞效应的影响[J].液晶与显示, 2010, 25(1):53-56.

HU X Y, DU X, WANG Y H. Influence of polymer matrix molecule weight and polarity on hysteresis effect of polymer dispersed liquid crystals[J]. Chinese Journal of Liquid Crystals and Displays, 2010, 25(1):53-56. (in Chinese)

SONG P, CAO H, WANG F F, et al. The UV polymerisation temperature dependence of polymer-dispersed liquid crystals based on epoxies/acrylates hybrid polymer matrix components[J]. Liquid Crystals, 2012, 39(9):1131-1140.

AHMAD F, JAMIL M, LEE J W, et al. The effect of UV intensities and curing time on polymer dispersed liquid crystal (PDLC) display:a detailed analysis study[J]. Electronic Materials Letters, 2016, 12(5):685-692.

LI W B, CAO H, KASHIMA M, et al. Control of the microstructure of polymer network and effects of the microstructures on light scattering properties of UV-cured polymer-dispersed liquid crystal films[J]. Journal of Polymer Science Part B:Polymer Physics, 2008, 46(19):2090-2099.

RAO L H, YAN J, WU S T, et al. Critical field for a hysteresis-free BPLC device[J]. Journal of Display Technology, 2011, 7(12):627-629.

XU D M, YAN J, YUANJ M, et al. Electro-optic response of polymer-stabilized blue phase liquid crystals[J]. Applied Physics Letters, 2014, 105(1):011119.

DRZAICP S. Reorientation dynamics of polymer dispersed nematic liquid crystal Films[J]. Liquid Crystals, 1988, 3(11):1543-1559.

浏览量

下载量

CSCD

文章被引用时，请邮件提醒。

提交

工具集

关联资源

聚合物基体分子量及极性对聚合物分散液晶迟滞效应的影响

聚合单体对聚合物分散液晶薄膜视角电光特性的影响

氧化镍纳米颗粒对光驱动液晶显示的影响

基于聚合物分散液晶的图案化柔性智能窗户

单体烷基链长度对聚合物分散液晶膜电光性能的影响