Hybrid organic-inorganic light emitting diode using ZnO nanorods as electron transport layer

We have successfully synthesized hybrid organic-inorganic light emitting diode using ZnO nanorods as the electron transport layer and MEH-PPV as the emitting layer. The ZnO nanorods were synthesized using self-catalyzed thermal chemical vapor deposition method. The current density-voltage curves prove that the conductivity of the ZnO nanorods was improved. The turn on voltage was reduced from 2V to 0.4V with the insertion of ZnO nanorods between the cathode and emissive layer. Sharp visible emissions centred at 540 and 580 nm were observed from the electroluminescence spectra under forward biasing. A broad emission at 590 nm with a shoulder peak at 640 nm was also detected.