Electro-optical performance of liquid crystal device based on Al-doped SnO fabricated by sol-gel process. Issue 3 (19th February 2020)

• Record Type: Journal Article
• Authors: Won, Jong Hoon; Lee, Ju Hwan; Kim, Dong Hyum; Lee, Dong Wook; Kim, Dae-Hyun; Jeong, Hae-Chang; Oh, Byeong-Yun; Han, Jeong Min; Seo, Dae-Shik
• Is Part Of: Liquid crystals. Volume 47:Issue 3(2020)
• Page Start: 345
• Page End: 351
• Publication Date: 2020-02-19
• Subjects: Aluminum-doped tin oxide -- annealing temperature -- ion beam bombardment -- liquid crystals; Liquid crystals -- Periodicals; 548.905
• DOI: 10.1080/02678292.2019.1647570
• Languages: English
• ISSNs: 0267-8292

Abstract

ABSTRACT: We demonstrated uniform LC alignment on IB-irradiated aluminium tin oxide (AlSnO) by controlling the annealing temperature. Physico-chemical analyses were carried out to determine the surface modification and uniform LC alignment mechanism as a function of the annealing temperature. IB irradiation induced the breakdown of the chemical bonds of AlSnO, preserving its anisotropic characteristics along the direction of IB irradiation, allowing for uniform alignment of the LC molecules on the reformed surface. However, at annealing temperatures under the boiling point of the solvent, residual solvent remained on the surface, thereby prohibiting uniform LC alignment. Moreover, we obtained good optical transmittance in the visual region and good electro-optical performance. Therefore, the IB-irradiated AlSnO film annealed above 200°C exhibited good potential as an alternative candidate for LC display applications. Graphical abstract: