Low temperature studies of substituted copper phthalocyanine Langmuir-Blodgett films

Abstract

Molecules of copper phthalocyanine were specially substituted for better adherence and alignment in ultra thin films prepared by the Langmuir-Blodgett (LB) technique. The basic pressure-area isotherms and the optical absorption spectroscopic studies suggest that the LB films were deposited as monolayers. The layers were transferred onto quartz substrates predeposited with interdigitated platinum electrodes. The AC and DC characteristics within a temperature range of 77 K to 300 K. provided quantitative information on the transport properties of the thin films. The results verify the previously established power-law dependence of the conductivity on the frequency.