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

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

doi:10.3390/molecules27217265

Molecules (Oct 2022)

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

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

Affiliations

Yuzhen Zhao: Xi’an Key Laboratory of Advanced Photo-Electronics Materials and Energy Conversion Device, School of Electronic Information, Xijing University, Xi’an 710123, China
Jinqian Li: School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
Yang Yu: School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
Yang Zhao: Xi’an Key Laboratory of Advanced Photo-Electronics Materials and Energy Conversion Device, School of Electronic Information, Xijing University, Xi’an 710123, China
Zhun Guo: Xi’an Key Laboratory of Advanced Photo-Electronics Materials and Energy Conversion Device, School of Electronic Information, Xijing University, Xi’an 710123, China
Ruijuan Yao: Xi’an Key Laboratory of Advanced Photo-Electronics Materials and Energy Conversion Device, School of Electronic Information, Xijing University, Xi’an 710123, China
Jianjing Gao: Xi’an Key Laboratory of Advanced Photo-Electronics Materials and Energy Conversion Device, School of Electronic Information, Xijing University, Xi’an 710123, China
Yongming Zhang: Xi’an Key Laboratory of Advanced Photo-Electronics Materials and Energy Conversion Device, School of Electronic Information, Xijing University, Xi’an 710123, China
Dong Wang: School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China

DOI: https://doi.org/10.3390/molecules27217265
Journal volume & issue: Vol. 27, no. 21
p. 7265

Abstract

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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 (Vth) is reduced to about 7.5 V. Therefore, MgO-doped PDLC is expected to become an excellent choice in the field of energy-saving.

Published in Molecules

ISSN: 1420-3049 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Science: Chemistry: Organic chemistry
Website: http://www.mdpi.com/journal/molecules

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