Photocurrent of Solution-Grown Thin Polycarbonate Films Containing Soluble Nickel-Phthalocyanine

The photocurrent of solution-grown polycarbonate film containing 25 phr soluble NiPcX4 was measured. The photocurrent showed an antibatic relationship with the wavelength of irradiated light. When the photocurrent was measured only in the irradiated region, it showed a symbatic relationship. The reasons for these findings were discussed via a model which took into account both the kinetics of photogenerated carriers in the irradiated region and the field-dependent carrier mobility. Appearance of the antibatic photocurrent was found to be caused by high resistivity in the non irradiated region of the sample.