Mesophase semiconductors in field effect transistors

Recent studies on transistors fabricated with liquid crystalline semiconductors with high solubility in common organic solvents have shown the characteristic features provided by their “mesomorphic properties”. In particular, calamitic liquid crystals showing 3D-plastic mesophases are interesting in the self-assembling nature, which is likely to result in some specified properties such as defect-free domains for charge hopping processes as well as the spontaneous alignment of molecules in the active layer on a substrate. Now liquid crystalline semiconductors are being evolved into mesophase semiconductors following the definition of liquid crystals.