Thin films of iodinated nickel phthalocyanine were made by double‐source evaporation of nickel phthalocyanine and iodine in vacuum. They were obtained by keeping the substrate temperature at about −90 °C. Thecaxes of crystallites composing the film were almost perpendicular to the quartz glass substrate. The conductivities of the films were 0.1–1 S/cm at room temperature which decreased slightly as the measuring temperature wasloweredto−170 °C.