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Monolayer light-emitting diodes (LEDs) from poly(1,4-phenylene vinylene) (PPV) usually exhibit relatively low quantum efficiencies. Thus, the external efficiency of an indium-tin oxide (ITO)/PPV/Al LED is typically 0.001%. In order to increase the quantum yield heterolayer devices with new oxadiazole polymers have been fabricated. These polymers with the electron-withdrawing oxadiazole units facilitate...
Optically (ODMR) and electrically (EDMR) detected magnetic resonance experiments were performed on poly-(paraphenylene-vinylene) (PPV) films and photodiodes based on PPV. The photoinduced short circuit current I SC was found to be dependent on the carriers spin polarization in the space charge region of the A1/PPV/ITO-photodiode. A large decrease in I SC of up to ten percent...
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