Electrooptical Properties of Single-Walled Carbon-Nanotube Mixed Liquid-Crystal Cells With Rubbed and Ion-Beam-Treated Alignment Layers

• Published in: Journal of display technology Vol. 7; no. 12; pp. 644 - 648
• Main Authors: Park, Hong-Gyu, Jeong, Hae-Yun, Kim, Young-Hwan, Kim, Byoung-Yong, Kim, Jeong-Hwan, Yoon, Hongil, Seo, Dae-Shik
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.12.2011; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Alignment; Carbon nanotubes; Display devices; Educational institutions; Electrooptical; Electrooptical property; Electrooptical waveguides; Ion beams; ion-beam (IB) process; Liquid crystals; liquid crystals (LCs); rubbing process; Single wall carbon nanotubes; single-walled carbon-nanotube (SWNT); Spectra; Thermal stability; Threshold voltage; Transmittance
• ISSN: 1551-319X; 1558-9323
• DOI: 10.1109/JDT.2011.2160841

The electrooptical properties of single-walled carbon-nanotube (SWCNT) mixed liquid-crystal (LC) cells fabricated by rubbing and ion-beam (IB) process are investigated. The increase of SWCNT concentration in the LC mixture led to a decrease in the threshold voltage of twisted nematic cells by reducing the screening effect. Threshold voltages of 1.3 and 1.7 V are lowered to 0.8 and 1.2 V, respectively, with SWCNT mixtures up to 10×10 -3 wt%. LC alignment characteristics including LC orientation state, transmittance spectra, pretilt angle, and thermal stability of LC cells are also observed.