Effect of dichroic dye on absorption coefficient and electro-optic performance of nano particles induced homeotropic aligned liquid crystal

Abstract

Effect of dichroic dye on nano particles induced homeotropic aligned liquid crystal (HALC) cells was studied for an enormous approach in display technology. The measurements of absorption coefficient and electro-optic (E-O) performance of HALC cells doped with two different concentrations (wt. /wt. ratio) of 0.25% and 0.5% of dichroic dye reveal that higher dye concentration lowered the values of threshold as well as operating voltages. However, contrast ratio (CR) and absorption coefficient (β) have been found to be reduced with higher dye concentration due to increase in off state transmittance.Effect of dichroic dye on nano particles induced homeotropic aligned liquid crystal (HALC) cells was studied for an enormous approach in display technology. The measurements of absorption coefficient and electro-optic (E-O) performance of HALC cells doped with two different concentrations (wt. /wt. ratio) of 0.25% and 0.5% of dichroic dye reveal that higher dye concentration lowered the values of threshold as well as operating voltages. However, contrast ratio (CR) and absorption coefficient (β) have been found to be reduced with higher dye concentration due to increase in off state transmittance.