Abstract
Steady-state current measurements for a liquid crystalline material, 4-(trans-4-pentylcyclohexyl)benzonitryl(PCH-5), were performed. It was found that conductivity decreases with increasing applied DC voltage in a lower voltage region (<0.3V). In a higher voltage region (from 0.3 to 1V), conductivity increases with increasing voltage. Assuming an existence of electric double layers on the electrode surfaces, it is considered that the steady-state current in the range from 0.3 to 1V is caused by Schottky effect. The injection energy of an electron from electrodes to the LC material was calculated from observed temperature dependence of the steady-state current.
