Temperature-dependent electrical and dielectric properties of nematic liquid crystals doped with ferroelectric particles

Yu Cheng Hsiao; Sheng Miao Huang; En Rong Yeh; Wei Lee

doi:10.1016/j.displa.2015.11.004

Temperature-dependent electrical and dielectric properties of nematic liquid crystals doped with ferroelectric particles

Yu Cheng Hsiao, Sheng Miao Huang, En Rong Yeh, Wei Lee

Research output: Contribution to journal › Article › peer-review

30 Citations (Scopus)

Abstract

We report on the temperature dependence of dielectric properties of nematic liquid crystals impregnated with BaTiO₃ (BTO) ferroelectric nanoparticles. The behavior of ion transport at low frequencies is discussed by means of dielectric spectroscopy, which allows the ionic concentration and the relaxation time of electrode polarization to be deduced. The experimental results imply that the ferroelectric nanoparticles can not only increase the traveling time of ions between two electrodes but also suppress the buildup of the electric double layers. Verified by the voltage holding ratio of cells containing various contents of BTO nanoparticles, it is obvious that doping BTO into liquid crystals is a low-cost and easy way to improve the device performance.

Original language	English
Pages (from-to)	61-65
Number of pages	5
Journal	Displays
Volume	44
DOIs	https://doi.org/10.1016/j.displa.2015.11.004
Publication status	Published - Sept 1 2016
Externally published	Yes

Keywords

Dielectric relaxation
Display devices
Electrode polarization
Liquid crystals

ASJC Scopus subject areas

Human-Computer Interaction
Hardware and Architecture
Electrical and Electronic Engineering

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10.1016/j.displa.2015.11.004

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title = "Temperature-dependent electrical and dielectric properties of nematic liquid crystals doped with ferroelectric particles",

abstract = "We report on the temperature dependence of dielectric properties of nematic liquid crystals impregnated with BaTiO3 (BTO) ferroelectric nanoparticles. The behavior of ion transport at low frequencies is discussed by means of dielectric spectroscopy, which allows the ionic concentration and the relaxation time of electrode polarization to be deduced. The experimental results imply that the ferroelectric nanoparticles can not only increase the traveling time of ions between two electrodes but also suppress the buildup of the electric double layers. Verified by the voltage holding ratio of cells containing various contents of BTO nanoparticles, it is obvious that doping BTO into liquid crystals is a low-cost and easy way to improve the device performance.",

keywords = "Dielectric relaxation, Display devices, Electrode polarization, Liquid crystals",

author = "Hsiao, {Yu Cheng} and Huang, {Sheng Miao} and Yeh, {En Rong} and Wei Lee",

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year = "2016",

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doi = "10.1016/j.displa.2015.11.004",

language = "English",

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TY - JOUR

T1 - Temperature-dependent electrical and dielectric properties of nematic liquid crystals doped with ferroelectric particles

AU - Hsiao, Yu Cheng

AU - Huang, Sheng Miao

AU - Yeh, En Rong

AU - Lee, Wei

PY - 2016/9/1

Y1 - 2016/9/1

N2 - We report on the temperature dependence of dielectric properties of nematic liquid crystals impregnated with BaTiO3 (BTO) ferroelectric nanoparticles. The behavior of ion transport at low frequencies is discussed by means of dielectric spectroscopy, which allows the ionic concentration and the relaxation time of electrode polarization to be deduced. The experimental results imply that the ferroelectric nanoparticles can not only increase the traveling time of ions between two electrodes but also suppress the buildup of the electric double layers. Verified by the voltage holding ratio of cells containing various contents of BTO nanoparticles, it is obvious that doping BTO into liquid crystals is a low-cost and easy way to improve the device performance.

AB - We report on the temperature dependence of dielectric properties of nematic liquid crystals impregnated with BaTiO3 (BTO) ferroelectric nanoparticles. The behavior of ion transport at low frequencies is discussed by means of dielectric spectroscopy, which allows the ionic concentration and the relaxation time of electrode polarization to be deduced. The experimental results imply that the ferroelectric nanoparticles can not only increase the traveling time of ions between two electrodes but also suppress the buildup of the electric double layers. Verified by the voltage holding ratio of cells containing various contents of BTO nanoparticles, it is obvious that doping BTO into liquid crystals is a low-cost and easy way to improve the device performance.

KW - Dielectric relaxation

KW - Display devices

KW - Electrode polarization

KW - Liquid crystals

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DO - 10.1016/j.displa.2015.11.004

M3 - Article

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SN - 0141-9382

VL - 44

SP - 61

EP - 65

JO - Displays

JF - Displays

ER -

Temperature-dependent electrical and dielectric properties of nematic liquid crystals doped with ferroelectric particles

Abstract

Keywords

ASJC Scopus subject areas

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