Elucidating the role of hyperfine interactions on organic magnetoresistance using deuterated aluminium tris(8-hydroxyquinoline)

Rolfe, N. J.; Heeney, M.; Wyatt, P. B.; Drew, A. J.; Kreouzis, T.; Gillin, W. P.

PHYSICAL REVIEW B

2009

Measurements of the effect of a magnetic field on the light output and current through an organic light-emitting diode made with deuterated aluminum tris(8-hydroxyquinoline) have shown that hyperfine coupling with protons is not the cause of the intrinsic organic magnetoresistance. We suggest that interactions with unpaired electrons in the device may be responsible.