Electron-hole pair mechanism for the magnetic field effect in organic light emitting diodes based on poly(paraphenylene vinylene).

Autor: Bagnich, S. A., Niedermeier, U., Melzer, C., Sarfert, W., von Seggern, H.
Předmět:
Zdroj: Journal of Applied Physics; Dec2009, Vol. 106 Issue 11, p113702-113709, 7p, 6 Graphs
Abstrakt: We investigated the magnetic field effect (MFE) on current and electroluminescence in organic light emitting diodes based on poly(paraphenylene vinylene). The MFE was strictly positive in the full range of device operation and showed nonmonotonic dependencies on applied voltage and temperature. Furthermore, the MFE on current obtained in bipolar devices was significantly larger than in hole-dominated devices. We discuss our results in the framework of an electron-hole pair model and show that the model can explain all functional dependencies observed in our devices. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index