Abstract
Magnetic fields were found to increase the photocurrent in poly-N-vinylcarbazole (PVCz) films by up to 5–6% at 1 kG. This positive magnetic field effect was sensitive to both applied voltage and temperature, and was enhanced with dimethyl-terephthalate (DMTP) doping by a factor of two. Magnetic fields were also found to increase the prompt exciplex fluorescence of PVCz films doped with DMTP by up to 2% at 500 G. The observations made clear that a carrier generation process via an exciplex state has an important role in photo-carrier generation even in undoped PVCz films.
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