Single layer graphene: an alternative electrode material for ferroelectric liquid crystal based displays

ABSTRACT

We made comparative investigations on indium tin oxide (ITO) and single-layer graphene (SLG)-coated glass substrate as electrodes, specially for ferroelectric liquid crystal (FLC)-based system. We experimentally examined the comparative behaviour of important electro-optical FLC parameters for ITO- and SLG-based sample cells. The parameters are observed to be almost similar for both the cells. Interestingly, the value of threshold voltage is observed lower in SLG-based cell in comparison to that of conventional ITO/ITO cell. The presented results will definitely add a step to prove the suitability of graphene to be used as transparent electrodes in FLC-based display devices.

GRAPHICAL ABSTRACT

KEYWORDS:

• Ferroelectric liquid crystals
• single-layer graphene
• electro-optical properties
• transparent electrode

Acknowledgements

The authors sincerely thank the Director, National Physical Laboratory, for continuous encouragement and interest in this work. One of the authors (AMB) is thankful to the DST and CSIR, New Delhi for financial assistance in the emeritus scheme.

Disclosure statement

No potential conflict of interest was reported by the authors.