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
JournalLiquid Crystals
DOIs
Publication statusAccepted/In press - 2019 Jan 1

Fingerprint

Liquid Crystals
sol-gel processes
Liquid crystals
Sol-gel process
liquid crystals
alignment
Annealing
annealing
Irradiation
irradiation
Chemical bonds
Boiling point
Opacity
chemical bonds
Tin oxides
Aluminum
boiling
Temperature
preserving
tin oxides

All Science Journal Classification (ASJC) codes

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

Cite this

Won, Jong Hoon ; Lee, Ju Hwan ; Kim, Dong Hyum ; Lee, Dong Wook ; Kim, Dae Hyun ; Jeong, Hae Chang ; Oh, Byeong Yun ; Han, Jeong Min ; Seo, Dae Shik. / Electro-optical performance of liquid crystal device based on Al-doped SnO fabricated by sol-gel process. In: Liquid Crystals. 2019.
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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.",
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Electro-optical performance of liquid crystal device based on Al-doped SnO fabricated by sol-gel process. / Won, Jong Hoon; Lee, Ju Hwan; Kim, Dong Hyum; Lee, Dong Wook; Kim, Dae Hyun; Jeong, Hae Chang; Oh, Byeong Yun; Han, Jeong Min; Seo, Dae Shik.

In: Liquid Crystals, 01.01.2019.

Research output: Contribution to journalArticle

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AU - Won, Jong Hoon

AU - Lee, Ju Hwan

AU - Kim, Dong Hyum

AU - Lee, Dong Wook

AU - Kim, Dae Hyun

AU - Jeong, Hae Chang

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AU - Han, Jeong Min

AU - Seo, Dae Shik

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AB - 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.

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