Optimization of the electrical parameters of nematic and discotic liquid crystalline materials due to the dispersion of nano particles, nano tubes and quantum dots for display and photo-voltaic applications

摘要

Electro-optical and dielectric parameters of the nano particle and carbon nano tube dispersed room temperature liquid crystalline materials 5CB and 6CHBT have been determined. In the nano-entity dispersed systems, nematic to isotropic transition temperatures are highly affected. Threshold voltage required to switch molecules from bright state to dark state is decreased. Longitudinal and transverse components of the dielectric permittivity are affected in such a way that it improves display properties. Doping of functionalized nano particles have drastically enhanced conductivities through the columns of the discotic liquid crystals which are very useful in several applications including one dimensional conductor. This includes application of discotic-nano composites in flexible photovoltaic areas as well. Calculations shows that due to the increase electrical conductivity there would be appreciable enhancement in the efficiency due to the doping of the metallic and semi conducting nano-particles.