期刊
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
卷 8, 期 4, 页码 R66-R69出版社
ELECTROCHEMICAL SOC INC
DOI: 10.1149/2.0081904jss
关键词
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资金
- National Research Foundation of Korea [2018-11-0902]
We induced a homogeneous liquid crystal (LC) alignment state on ion-beam (IB)-irradiated NiO films fabricated via solution-processing. A topographical analysis was performed using field emission-scanning electron microscopy of the films after various annealing temperatures. After IB irradiation, the surface of the NiO films was rough irrespective of annealing temperature. IB-irradiated NiO films exhibited slightly reduced transparency in the visible region compared to as-deposited NiO film. Moreover, the IB-irradiated NiO films fabricated at the lowest annealing temperature of 100 degrees C exhibited uniform homogeneous LC alignment caused by microgroove-like topographic modification and chemical modification of the NiO surface by the IB irradiation. The pretilt angle of the LC molecules on IB-irradiated NiO film annealed at 100, 200, 300, and 400 degrees C were on average 0.02 0.05, 0.43, and 0.05 degrees, respectively, making IB-irradiated NiO film eminently suitable for LC alignment. (C) 2019 The Electrochemical Society.
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