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

Research output: Contribution to journalArticle

19 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 languageEnglish
Pages (from-to)789-793
Number of pages5
JournalLiquid Crystals
Volume39
Issue number7
DOIs
Publication statusPublished - 2012 Jul 1

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Yttrium
Nematic liquid crystals
Electrooptical effects
yttrium
electro-optics
Optical properties
liquid crystals
Nanoparticles
optical properties
nanoparticles
Doping (additives)
Threshold voltage
doped crystals
threshold voltage
transmittance
proportion
Screening
screening
Agglomeration
cracks

All Science Journal Classification (ASJC) codes

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

Cite this

Jung, Hae Yoon ; Kim, Hyung Jun ; Yang, Seok ; Kang, Young Gu ; Oh, Byeong Yun ; Park, Hong Gyu ; Seo, Dae Shik. / Enhanced electro-optical properties of Y 2O 3 (yttrium trioxide) nanoparticle-doped twisted nematic liquid crystal devices. In: Liquid Crystals. 2012 ; Vol. 39, No. 7. pp. 789-793.
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Enhanced electro-optical properties of Y 2O 3 (yttrium trioxide) nanoparticle-doped twisted nematic liquid crystal devices. / Jung, Hae Yoon; Kim, Hyung Jun; Yang, Seok; Kang, Young Gu; Oh, Byeong Yun; Park, Hong Gyu; Seo, Dae Shik.

In: Liquid Crystals, Vol. 39, No. 7, 01.07.2012, p. 789-793.

Research output: Contribution to journalArticle

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AU - Jung, Hae Yoon

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AU - Oh, Byeong Yun

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