High performance of the electrically controlled birefringence mode in solution-derived La2O3 film using low temperature

Jae Won Lee, Hong Gyu Park, Hae Chang Jeong, Dae Shik Seo

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

We demonstrated the electro-optical characteristics of multi-stacked solution-derived La2O3 films in low temperature. Uniform and homogeneous liquid crystal (LC) alignment was achieved, and the films showed high performance. The electro-optic characteristics of the electrically controlled birefringence (ECB) mode with La2O3 layers were comparable to layers derived from polyimide, which indicated that La2O3 film had potential as an alignment layer due to its low threshold voltage (1.70 V) and fast response time (3.17 ms). The LC alignment on the solution-derived La2O3 surfaces was attributed to Van der Waals forces between LC molecules and La2O3 films. X-ray photoelectron spectroscopy demonstrated that the number of layers of coating changed the chemical structure, thereby shifting the binding energy and altering the bonding intensity.

Original languageEnglish
Pages (from-to)1-4
Number of pages4
JournalSoft Materials
Volume13
Issue number1
DOIs
Publication statusPublished - 2015 Jan 1

Fingerprint

Birefringence
Liquid Crystals
birefringence
Liquid crystals
liquid crystals
alignment
Temperature
Van der Waals forces
Electrooptical effects
Binding energy
Threshold voltage
polyimides
Polyimides
threshold voltage
low voltage
electro-optics
X ray photoelectron spectroscopy
binding energy
photoelectron spectroscopy
coatings

All Science Journal Classification (ASJC) codes

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

Cite this

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abstract = "We demonstrated the electro-optical characteristics of multi-stacked solution-derived La2O3 films in low temperature. Uniform and homogeneous liquid crystal (LC) alignment was achieved, and the films showed high performance. The electro-optic characteristics of the electrically controlled birefringence (ECB) mode with La2O3 layers were comparable to layers derived from polyimide, which indicated that La2O3 film had potential as an alignment layer due to its low threshold voltage (1.70 V) and fast response time (3.17 ms). The LC alignment on the solution-derived La2O3 surfaces was attributed to Van der Waals forces between LC molecules and La2O3 films. X-ray photoelectron spectroscopy demonstrated that the number of layers of coating changed the chemical structure, thereby shifting the binding energy and altering the bonding intensity.",
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High performance of the electrically controlled birefringence mode in solution-derived La2O3 film using low temperature. / Lee, Jae Won; Park, Hong Gyu; Jeong, Hae Chang; Seo, Dae Shik.

In: Soft Materials, Vol. 13, No. 1, 01.01.2015, p. 1-4.

Research output: Contribution to journalArticle

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AB - We demonstrated the electro-optical characteristics of multi-stacked solution-derived La2O3 films in low temperature. Uniform and homogeneous liquid crystal (LC) alignment was achieved, and the films showed high performance. The electro-optic characteristics of the electrically controlled birefringence (ECB) mode with La2O3 layers were comparable to layers derived from polyimide, which indicated that La2O3 film had potential as an alignment layer due to its low threshold voltage (1.70 V) and fast response time (3.17 ms). The LC alignment on the solution-derived La2O3 surfaces was attributed to Van der Waals forces between LC molecules and La2O3 films. X-ray photoelectron spectroscopy demonstrated that the number of layers of coating changed the chemical structure, thereby shifting the binding energy and altering the bonding intensity.

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