掺杂MgO纳米颗粒的聚合物分散液晶的电光特性

Electro-Optical Characteristics of Polymer Dispersed Liquid Crystal Doped with MgO Nanoparticles.

作者信息

Zhao Yuzhen, Li Jinqian, Yu Yang, Zhao Yang, Guo Zhun, Yao Ruijuan, Gao Jianjing, Zhang Yongming, Wang Dong

机构信息

Xi'an Key Laboratory of Advanced Photo-Electronics Materials and Energy Conversion Device, School of Electronic Information, Xijing University, Xi'an 710123, China.

School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China.

出版信息

Molecules. 2022 Oct 26;27(21):7265. doi: 10.3390/molecules27217265.

DOI:10.3390/molecules27217265

PMID:36364092

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9658133/

Abstract

In this paper, inorganic oxide MgO nanoparticles-doped polymer dispersed liquid crystal (PDLC) films were made from a mixture of the prepolymer, SLC1717 liquid crystal, and MgO nanoparticles by the polymerization induced phase separation (PIPS) process. To observe the effect of MgO concentration, PDLC was dispersed with 0.2, 0.4, 0.6, and 0.8 wt.% MgO. Electro-optical properties of the films have been investigated using LCD parameter meter and Scanning Electron Microscope (SEM) at room temperature. It is established that MgO nanoparticles affect the microstructure of PDLC films significantly because of the formed agglomerates of MgO nanoparticles. Results show an improvement in the electro-optical properties and a decrease in the driving voltage for doped systems with MgO nanoparticles. When the doping amount of MgO is 0.8 wt.%, the threshold voltage (V) is reduced to about 7.5 V. Therefore, MgO-doped PDLC is expected to become an excellent choice in the field of energy-saving.

摘要

在本文中，无机氧化物氧化镁纳米颗粒掺杂的聚合物分散液晶（PDLC）薄膜是通过聚合诱导相分离（PIPS）工艺，由预聚物、SLC1717液晶和氧化镁纳米颗粒的混合物制成的。为了观察氧化镁浓度的影响，PDLC分别分散有0.2、0.4、0.6和0.8 wt.%的氧化镁。在室温下，使用液晶参数仪和扫描电子显微镜（SEM）对薄膜的电光性能进行了研究。已证实，由于形成了氧化镁纳米颗粒团聚体，氧化镁纳米颗粒对PDLC薄膜的微观结构有显著影响。结果表明，对于含有氧化镁纳米颗粒的掺杂体系，其电光性能有所改善，驱动电压降低。当氧化镁的掺杂量为0.8 wt.%时，阈值电压（V）降低至约7.5 V。因此，氧化镁掺杂的PDLC有望成为节能领域的一个极佳选择。