Improving turn on voltage and driving voltage of organic electroluminescent devices with nitrogen doped electron transporter
2003
Abstract In this letter, I / V curves, output luminance of the organic light emitting diodes (OLEDs) with N 2 doped electron transport layer (ETL) have been studied in detail. Experimental results show that the turn on voltage and driving voltage of OLEDs with ETL evaporated in the optimum N 2 gas ambient pressure of 1×10 −4 Torr are reduced from 3.5 to 1 V and 7.7 to 5.7 V, respectively. The significant improving mechanism has been illustrated comprehensively with a schematic energy diagram model.
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