Current-Voltage Characteristics of Organic Light- Emitting Diodes Depending on the Application of Forward-Reverse Bias Voltage

摘要

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 shows a current mxima at low voltage, which is not related to the emission from Al q_3.