Electro-optical performance of liquid crystal device based on Al-doped SnO fabricated by sol-gel process

Jong Hoon Won, Ju Hwan Lee, Dong Hyum Kim, Dong Wook Lee, Dae Hyun Kim, Hae Chang Jeong, Byeong Yun Oh, Jeong Min Han, Dae Shik Seo

Research output: Contribution to journalArticle

Abstract

We demonstrated uniform LC alignment on IB-irradiated aluminium tin oxide (AlSnO) by controlling the annealing temperature. Physico-chemical analyses were carried out to determine the surface modification and uniform LC alignment mechanism as a function of the annealing temperature. IB irradiation induced the breakdown of the chemical bonds of AlSnO, preserving its anisotropic characteristics along the direction of IB irradiation, allowing for uniform alignment of the LC molecules on the reformed surface. However, at annealing temperatures under the boiling point of the solvent, residual solvent remained on the surface, thereby prohibiting uniform LC alignment. Moreover, we obtained good optical transmittance in the visual region and good electro-optical performance. Therefore, the IB-irradiated AlSnO film annealed above 200°C exhibited good potential as an alternative candidate for LC display applications.

Original languageEnglish
Pages (from-to)345-351
Number of pages7
JournalLiquid Crystals
Volume47
Issue number3
DOIs
Publication statusPublished - 2020 Feb 19

All Science Journal Classification (ASJC) codes

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

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    Won, J. H., Lee, J. H., Kim, D. H., Lee, D. W., Kim, D. H., Jeong, H. C., Oh, B. Y., Han, J. M., & Seo, D. S. (2020). Electro-optical performance of liquid crystal device based on Al-doped SnO fabricated by sol-gel process. Liquid Crystals, 47(3), 345-351. https://doi.org/10.1080/02678292.2019.1647570