Electrical Properties of Poly-Copper Phthalocyanine

Abstract

Hall effect and electrical resistivity measurements as a function of temperature to ∼450°C have been carried out on a polymer of copper phthalocyanine. From the Hall effect data it is concluded that intrinsically the polymer of copper phthalocyanine is P type. Two states of this polymer have been determined, one has an activation energy of 0.26 ev and a carrier density ∼10¹⁶/cm³ (the carrier concentration varying with temperature), a second, a heat‐treated polymer, also shows P type conductivity but the carrier density is ∼10¹⁸/cm³ and is constant in the range of temperature measured. The mobility in the heat‐treated polymer is found to increase with increasing temperature. N type conductivity observed on the first structure is believed to be a consequence of impurities.