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Thermal and electro-optical properties of cerium-oxide-doped liquid-crystal devices |
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| Authors: | Hyo-Young Mun Hong-Gyu Park Hae-Chang Jeong Ju Hwan Lee Byeong-Yun Oh |
| Institution: | 1. Information Display Device Laboratory, Department of Electrical and Electronic Engineering, Yonsei University, Seoul, South Korea;2. School of Electrical, Electronic &3. Control Engineering, Changwon National University, Gwangju, South Korea;4. Gwangju Institute of Science and Technology, Gwangju, South Korea |
| Abstract: | Doping with cerium (IV) oxide (CeO2) nanoparticles can significantly enhance the thermal stability and electro-optical (EO) properties of nematic liquid crystal (NLC) systems. Thermal stability was improved without aggregation and reduction of transmittance by adding CeO2 nanoparticles in a liquid crystal medium. In particular, the EO properties greatly improved in CeO2-dispersed NLC cells. The threshold voltage reduced from 3.027 to 2.279 V and the response time decreased from 13.097 to 9.970 ms with increased CeO2 nanoparticles in the NLC cells. The improved properties of liquid crystals doped with CeO2 nanoparticles depend on the anchoring energy and the electric field of the CeO2-dispersed liquid crystal displays. |
| Keywords: | Liquid crystal cerium oxide nanoparticle doping thermal property electro-optical property |