Electro-optical characteristics of a liquid crystal cell with graphene electrodes

• Nune H. Hakobyan,
• Hakob L. Margaryan,
• Valeri K. Abrahamyan,
• Vladimir M. Aroutiounian,
• Arpi S. Dilanchian Gharghani,
• Amalya B. Kostanyan,
• Timothy D. Wilkinson and
• Nelson Tabirian

Beilstein J. Nanotechnol. 2017, 8, 2802–2806, doi:10.3762/bjnano.8.279

• can be successfully used as a transparent conductive layer in LC devices. Keywords: conductive layer; graphene; ITO; liquid crystal cell; optical switching time; Introduction In modern optical devices based on liquid crystals (LCs) the electro-optical control is realized using a transparent

• in voltage leads to the switching between the quasi-steady states of the LC. Optical switching time characteristics are measured by using the TNE control signal (Figure 8). As shown Figure 7, during the fast switching mode, the reorientation times for LC cells with ITO and graphene conducting layers

• with ITO (18.6 ms – reorientation, 11.7 ms – relaxation). Conclusion Hybrid graphene–ITO nematic LC devices have been investigated to characterize the electronic properties of graphene. The optical switching time characteristics of LC cells with graphene are slightly worse than those of cells with ITO