Enhanced electro-optical properties of Y 2O 3 (yttrium trioxide) nanoparticle-doped twisted nematic liquid crystal devices

Hae Yoon Jung; Hyung Jun Kim; Seok Yang; Young Gu Kang; Byeong Yun Oh; Hong Gyu Park; Dae Shik Seo

doi:10.1080/02678292.2012.681073

Enhanced electro-optical properties of Y ₂O ₃ (yttrium trioxide) nanoparticle-doped twisted nematic liquid crystal devices

Hae Yoon Jung, Hyung Jun Kim, Seok Yang, Young Gu Kang, Byeong Yun Oh, Hong Gyu Park, Dae Shik Seo

Department of Electrical and Electronic Engineering

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

27 Citations (Scopus)

Abstract

We report the electro-optic (EO) characteristics of a Y ₂O ₃ nanoparticle-doped nematic liquid crystal (NLC) system. After doping with 2wt.% Y ₂O ₃ nanoparticles, LC alignment shows a homogeneous orientation state without aggregation and crack. In particular, the pretilt angle was slightly increased in proportion to Y ₂O ₃ doping concentration. Response time was improved by nearly 53%, and the threshold voltage for display operation was reduced from 4.2V to 2.6V. We assumed that superior EO properties were achieved by the Y ₂O ₃ nanoparticle, which reduces the field-screening effect of impurity ions. We also confirmed that enhanced EO characteristics were achieved without loss of light transmittance.

Original language	English
Pages (from-to)	789-793
Number of pages	5
Journal	Liquid Crystals
Volume	39
Issue number	7
DOIs	https://doi.org/10.1080/02678292.2012.681073
Publication status	Published - 2012 Jul

All Science Journal Classification (ASJC) codes

Chemistry(all)
Materials Science(all)
Condensed Matter Physics

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10.1080/02678292.2012.681073

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title = "Enhanced electro-optical properties of Y 2O 3 (yttrium trioxide) nanoparticle-doped twisted nematic liquid crystal devices",

abstract = "We report the electro-optic (EO) characteristics of a Y 2O 3 nanoparticle-doped nematic liquid crystal (NLC) system. After doping with 2wt.% Y 2O 3 nanoparticles, LC alignment shows a homogeneous orientation state without aggregation and crack. In particular, the pretilt angle was slightly increased in proportion to Y 2O 3 doping concentration. Response time was improved by nearly 53%, and the threshold voltage for display operation was reduced from 4.2V to 2.6V. We assumed that superior EO properties were achieved by the Y 2O 3 nanoparticle, which reduces the field-screening effect of impurity ions. We also confirmed that enhanced EO characteristics were achieved without loss of light transmittance.",

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AU - Jung, Hae Yoon

AU - Kim, Hyung Jun

AU - Yang, Seok

AU - Kang, Young Gu

AU - Oh, Byeong Yun

AU - Park, Hong Gyu

AU - Seo, Dae Shik

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AB - We report the electro-optic (EO) characteristics of a Y 2O 3 nanoparticle-doped nematic liquid crystal (NLC) system. After doping with 2wt.% Y 2O 3 nanoparticles, LC alignment shows a homogeneous orientation state without aggregation and crack. In particular, the pretilt angle was slightly increased in proportion to Y 2O 3 doping concentration. Response time was improved by nearly 53%, and the threshold voltage for display operation was reduced from 4.2V to 2.6V. We assumed that superior EO properties were achieved by the Y 2O 3 nanoparticle, which reduces the field-screening effect of impurity ions. We also confirmed that enhanced EO characteristics were achieved without loss of light transmittance.

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Enhanced electro-optical properties of Y ₂O ₃ (yttrium trioxide) nanoparticle-doped twisted nematic liquid crystal devices

Abstract

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