The results of the spatial variation of the exciton formation rate are supported by reports of electroluminescence efficiency increase upon insertion of spacer layers between the active polymer layer and the metallic cathode. Further evidence for a difference in operating mechanism between Polyfluorenes (PFO) devices and conventional semiconductor diodes is demonstrated by changing the thickness of the polymer layer. Reducing the thickness lowers the device operating voltage. We have demonstrated that the J.V characteristics depend, not on the voltage (as for conventional devices), but instead on the electric field strength.
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Cite this article:
Sharma, Tiwari, Jogi and Awasthy (2015). Thickness Dependence of a Single Layer Polymer-Based Light-Emitting Diode. Journal of Ravishankar University (Part-B: Science), 28(1), pp. 60-64.