20
L. Hamryszak et al. / Journal of Molecular Liquids 165 (2012) 12–20
temperature. Indium-tin oxide (ITO)-coated glass was applied as the bot-
tom electrode and was coated with AzoAzs an active layer. Aluminum
Acknowledgments
−
6
was thermally deposited in vacuum (~10 Torr) as a top electrode. In
all these devices the ITO electrode was used as the anode, whereas the
top metallic contact was the cathode. The Al forms the Schottky barrier
with azomethine while ITO forms the ohmic contacts. The electrical be-
havior of devices in ambient conditions under both forward and reverse
bias was studied. Forward bias is defined here as a positive bias on the
bottom ITO electrode, i.e. a positive bias on the p-type organic layer rela-
tive to the top contact which is expected to be the main rectifying barrier
The authors thank Dr. A. Iwan for gift of 4-(4,4,5,5,6,6,7,7,8,
8,9,9,10,10,11,11,11-heptadecafluoroundecyloxy)benzaldehyde and
Mr. M. Domanski for I–V experiments.
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