Improvement of Anode/HTL Interface Properties Using Self-Assembled Monolayer in Organic Electronic Devices

M. Yamana, N. Yagmurcukardesb, A.K. Havarec, H. Aydina, K. Ocakoglud and S. Okure aOndokuz Mayıs University, Science and Arts Faculty, Department of Physics, Samsun, Turkey bIzmir Institute of Technology, Faculty of Science, Material Science and Engineering, Izmir, Turkey cToros University, Faculty of Engineering, Mersin, Turkey dMersin University, Advanced Technologies Research and Application Center, Ciftlikkoy, Turkey eIzmir Katip Celebi University, Material Science and Engineering, Çiğli, İzmir, Turkey

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Fabrication and characterization of highly efficient organic light-emitting diode with surface modification of indium tin oxide anodes by using self-assembled monolayer technique have been studied. Four different self-assembled molecules, K-28 ruthenium complex, octa-decyl-amine hydro-chloride, octa-decyl-tri-chloro-silane and mercaptohexdecanoic acid are used to modify ITO surface to improve the interface properties. Space charge limited currents measurements have been used to evaluate carrier mobility under steady state current. The results show that the surface properties such as the stability of ITO anode layer have significant effects on charge injection in organic light-emitting diode devices.

DOI: 10.12693/APhysPolA.123.459 PACS numbers: 73.40.Qv