| Autor: |
Craciun, N. I., Zhang, Y., Palmaerts, A., Nicolai, H. T., Kuik, M., Kist, R. J. P., Wetzelaer, G. A. H., Wildeman, J., Vandenbergh, J., Lutsen, L., Vanderzande, D., Blom, P. W. M. |
| Předmět: |
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| Zdroj: |
Journal of Applied Physics; Jul2010, Vol. 107 Issue 12, p124504, 5p, 1 Diagram, 1 Chart, 8 Graphs |
| Abstrakt: |
The interpretation of electron currents in conjugated polymers is strongly hindered by the occurrence of hysteresis. We investigate the transport of electrons in electron-only devices based on derivatives of poly(p-phenylene vinylene) (PPV) for various hole-blocking bottom electrodes as well as purification of the polymer. The use of a variety of hole blocking bottom contacts, as metallic electrodes and n-type doped polymers, did not give any improvement in the observed hysteresis. By purification of the PPV, hysteresis free electron-only currents can be obtained. The deep traps responsible for hysteresis, with a concentration in the 1016 cm-3 range, are not responsible for the trap-limited electron transport as observed in purified PPV. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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