Conduction in perylene - , - and - complexes

Perylene (Per) was reacted with , and in solid-solution reactions to produce solvent-free , and . X-ray diffraction identified the unit cells of the compounds as being orthorhombic in the first two cases and tetragonal in the last case. All of the compounds exhibited an increase in resistance with decreasing temperature indicative of a semiconducting type of behaviour and had room temperature resistivities of , , and , respectively. The conduction process has been analysed by fitting the data with a number of parameters in order to account for a nonlinearity in the versus 1/T curves. The polaronic hopping model employed includes contributions of multiphonon processes, and intragrain and intergrain effects, and provides a good fit to the resistivity data as well as consistency with the results of Hall effect measurements.