Photoconductive Properties of Binary Solid Solutions: Thionaphthene-Indole, N-Allyl-Thionaphthene-Indole and N-Isopropyl-Carbazole Doped Polycarbonate

Abstract

Chemical structure and molecular geometry of dopant molecules can strongly affect the photoelectronic properties of binary solid solutions. The different charge generation mechanisms and mobility resolution in the systems under consideration are clearly correlated to the presence of a crystalline phase. The different solubility of the molecules in the polymer matrix may be ascribed to the different molecular structure and in particular to the presence, in allyl-thionaphteneindole and N-isopropyl-carb-azole, of the aliphatic chain which helps homogeneous dispersion.

Key Words:

• Thionaphthene-indole
• N-allyl-thionaphthene-indole
• N-isopropyl-carbazole
• Photoconductivity
• charge mobility
• photoelectric quantum yield.