Electrical characteristics of lead phthalocyanine thin films using aluminium schottky barriers and gold ohmic contacts

The d.c. electrical properties of aluminium-lead phthalocyanine-gold sandwich structures have been investigated. Samples show space-charge-limited conductivity when the injecting electrode is gold. When the injecting electrode is aluminium they show the Schottky effect at low voltages and Poole-Frenkel emission at higher voltages. The existence of a Schottky barrier is confirmed by capacitance-voltage measurements. © 1992 Taylor & Francis Ltd.