Abstract
We have investigated current-voltage(I-V) characteristics of organic light-emitting diodes based on TPD/Alq 3 organics depending on the application of forward-reverse bias voltage. Luminance-voltage characteristics and luminous efficiency were measured at the same time when the I-V characteristics were measured. We have observed that the I-V characteristics were measured. We have observed that the I-V characteristics shows a current maxima at low voltage, which is not related to the emission from Alq 3 .
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