Surface reformation on solution-derived zinc oxide films for liquid crystal systems viaion-beam irradiation

We investigated solution-derived ZnO films as liquid crystal (LC) alignment layers viaion-beam (IB) irradiation. Solution processing was adopted to replace the sputtering method for the deposition of ZnO films as LC alignment layers. Uniform and homogeneous LC alignment was achieved, and a high-perf...

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Published in:Journal of materials chemistry. C, Materials for optical and electronic devices Materials for optical and electronic devices, 2013-10, Vol.1 (41), p.6824-6828
Main Authors: Lee, Jong-Jin, Park, Hong-Gyu, Han, Jae-Jun, Kim, Dai-Hyun, Seo, Dae-Shik
Format: Article
Language:English
Subjects:
Alignment
Deposition
Displays
Irradiation
Liquid crystals
Variability
X-ray photoelectron spectroscopy
Zinc oxide
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container_title Journal of materials chemistry. C, Materials for optical and electronic devices
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creator Lee, Jong-Jin
Park, Hong-Gyu
Han, Jae-Jun
Kim, Dai-Hyun
Seo, Dae-Shik
description We investigated solution-derived ZnO films as liquid crystal (LC) alignment layers viaion-beam (IB) irradiation. Solution processing was adopted to replace the sputtering method for the deposition of ZnO films as LC alignment layers. Uniform and homogeneous LC alignment was achieved, and a high-performance LC system was achieved using these substrates. X-ray photoelectron spectroscopy (XPS) analysis showed that surface reformation of ZnO films by annealing and IB irradiation affects the uniformity of the LC alignment and allows control of the pretilt angle. Superior electro-optical (EO) characteristics of twisted nematic-LC cells constructed with IB-irradiated ZnO films were observed, which indicates that the proposed solution-derived ZnO films have strong potential for use in the production of advanced LC displays.
doi_str_mv 10.1039/c3tc31470g
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subjects Alignment
Deposition
Displays
Irradiation
Liquid crystals
Variability
X-ray photoelectron spectroscopy
Zinc oxide
title Surface reformation on solution-derived zinc oxide films for liquid crystal systems viaion-beam irradiation
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