Nanocrystalline films of phthalocyanine-based molecular conductors were fabricated using a short-time electrocrystallization method with two indium–tin oxide (ITO) electrodes. The size and morphology of the nanocrystals could be controlled by adjusting the electrocrystallization conditions, and the ITO substrate was successfully covered with nanocrystals of the molecular conductor. The current density versus voltage (J–V) characteristics of devices with the configuration ITO/nanocrystals:C60/Al showed a reverse rectifying effect accompanied by a photovoltaic effect under 660nm wavelength irradiation, which is close to the gap between the HOMO and LUMO of phthalocyanine.

doi:10.7567/APEX.6.021602