Separating the roles of electrons and holes in the organic magnetoresistance of aluminum tris(8-hydroxyquinoline) organic light emitting diodes

N. Rolfe, P. Desai, P. Shakya, T. Kreouzis, W. P. Gillin
2008 Journal of Applied Physics  
Measurements of the effect of a magnetic field on the photocurrent in an aluminum tris͑8-hydroxyquinolate͒ based organic light emitting diode have shown that it is possible to identify the contribution to the organic magnetoresistance of both electrons and holes. For holes the effect of a magnetic field is to decrease the mobility, whereas for electrons the magnetic field appears to increase the mobility. These changes are suggested to be brought about through the magnetic field dependence of
more » ... eld dependence of the scattering of electrons and holes with excited states within the device.
doi:10.1063/1.3000454 fatcat:55435uvthjgxbmc5zrc6uknlv4