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 journalArticlepeer-review

23 Citations (Scopus)


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
Issue number7
Publication statusPublished - 2012 Jul

All Science Journal Classification (ASJC) codes

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


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