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Study on the Electrical Conduction Mechanism of Organic Light-Emitting Diodes (OLEDs)  

Lee, Won Jae (Department of Electronic Engineering, Gachon University)
Publication Information
Journal of the Semiconductor & Display Technology / v.17, no.4, 2018 , pp. 6-10 More about this Journal
Abstract
Organic light emitting devices have attracted the attention of many people because of their high potential for self-emission and flexible display devices. However, due to limitations in device efficiency and lifetime, partial commercialization is underway. In this paper, we have investigated the electrical conduction mechanism of the organic light emitting device by the temperature and the thickness of the light emitting layer through the current - voltage characteristics with respect to the conduction mechanism directly affecting the efficiency and lifetime of the organic light emitting device. Through the study, it was found that the conduction in the low electric field region is caused by the movement of the heat excited charge in the ohmic region and the tunneling of the electric charge due to the high electric field in the high electric field region.
Keywords
Organic Light Emitting Devices; Electrical Conduction Mechanism; Ohmic Region; Tunneling Region;
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  • Reference
1 C.W. Tang and S.A. Vanslyke, "Organic electroluminescent diodes", Appl. Phys. Lett. Vol. 51, No. 12, pp. 913-915, 1987.   DOI
2 J. H. Burroughes, D. D. C. Bradley, A.R. Brown, R. N. Marks, K. Mackey, R. H. Friend, P. L. Burn and A. B. Holmes, "Light-emitting diodes based on conjugated polymers", Nature, Vol. 347, pp. 539, 1990.   DOI
3 I. H. Campbell, P. S. Davids, D. L. Smith, N. N. Barashkov, and J. P. Ferraris, "The Schottky energy barrier dependence of charge injection in organic ligh-temitting diodes", Appl. Phys. Lett., Vol. 72, No. 15, 1998.
4 J. Laubender, L. Chkoda, M. Sokolowski, and E. Umbach, "The influence of oxygen and air on the characteristics of organic light emitting devices studied by in vacuo measurements", Synth. Metals, Vol. 111-112, pp.373, 2000.   DOI
5 F. T. Reis, D. Mencaraglia, S. Ould Saad, I. Seguy, M. Oukachmih, P. Jolinat, and P. Destruel, "Electrical characterization of ITO/CuPc/Al diodes using temperature dependent capacitance spectroscopy and I-V measurements", J. Non-Crystalline Solids, Vol. 338-340, pp. 599, 2004.   DOI
6 C. Bizzarri, E. Spuling, D. M. Knoll, D. Volz, S. Brase "Sustainable metal complexes for organic light-emitting diodes (OLEDs)", Coord. Chem. Rev., Vol. 373, pp. 49-82, 2018.   DOI