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1 2013

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Electrical properties of hybrid planar diode based on palladium phthalocyanine and titanium dioxide

Jarosz G., Kościelska B., Signerski R.

Materials Science Poland

2013

Vol. 31, No. 1

14-18

This work presents experimental studies of a planar diode made of the layers of indium tin oxide, titanium dioxide, palladium phthalocyanine and gold. The current rectification ratio was 105 at 1.5 V. The analysis of the electrical properties of the system was based on small signal complex capacitance spectra measured in the frequency range of 25 Hz - 1 MHz at different values of bias. No depletion region at the TiO2/PdPc interface was observed. Forward bias specifically affected both parts of the complex capacitance and the observed effect probably resulted from the rearrangement of charge carriers injected into the organic layer.