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Journal of Sol-Gel Science and Technology
Published in: Journal of Sol-Gel Science and Technology 1/2017

10-12-2016 | Original Paper: Sol-gel and hybrid materials for optical, photonic and optoelectronic applications

Unidirectional alignment of liquid crystals on solution-derived hafnium tin oxide films via ion-beam irradiation

Authors: Ju Hwan Lee, Hae-Chang Jeong, Sang Bok Jang, Hong-Gyu Park, Byeong-Yun Oh, Jeong-Min Han, Dae-Shik Seo

Published in: Journal of Sol-Gel Science and Technology | Issue 1/2017

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Abstract

We demonstrated the performance of solution-derived hafnium doped tin oxide films annealed at various temperatures via ion-beam irradiation. The Hf:SnO2 films were employed as liquid crystal alignment layers, which were deposited from solution to replace sputtering methods. Homogeneous and uniform liquid crystal alignment was achieved at all annealing temperatures, yielding a high-performance liquid crystal system. Field-emission scanning electron microscopy revealed the surface characteristics of the hafnium doped tin oxide films at various annealing temperatures, and various surface phenomena were observed. High-performance electro-optical properties were observed for the twisted nematic LC cells of hafnium doped tin oxide films annealed at various temperatures. The lowest threshold voltage (2.042 V) and fastest response time (8.494 ms) were achieved at an annealing temperature of 200 °C. Our results revealed the potential of solution-derived hafnium doped tin oxide films as liquid crystal alignment layers.

Graphical Abstract

https://static-content.springer.com/image/art%3A10.1007%2Fs10971-016-4279-6/MediaObjects/10971_2016_4279_Figa_HTML.gif
previous article Transparent, thermally stable methyl siloxane hybrid materials using sol-gel synthesized vinyl-methyl oligosiloxane resin
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Metadata
Title
Unidirectional alignment of liquid crystals on solution-derived hafnium tin oxide films via ion-beam irradiation
Authors
Ju Hwan Lee
Hae-Chang Jeong
Sang Bok Jang
Hong-Gyu Park
Byeong-Yun Oh
Jeong-Min Han
Dae-Shik Seo
Publication date
10-12-2016
Publisher
Springer US
Published in
Journal of Sol-Gel Science and Technology / Issue 1/2017
Print ISSN: 0928-0707
Electronic ISSN: 1573-4846
DOI
https://doi.org/10.1007/s10971-016-4279-6

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