Mechanism of electroluminescence in dye doped thiophene based conjugated polymer
Autor: | K. G. Chittibabu, Jayant Kumar, Sukant K. Tripathy, Mario J. Cazeca, Amarjeet Kaur |
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Rok vydání: | 2001 |
Předmět: | |
Zdroj: | Journal of Applied Physics. 89:3250-3255 |
ISSN: | 1089-7550 0021-8979 |
Popis: | The optical and electrical properties of polymer light emitting diodes based on poly [2-(3-thienyl) ethanol butoxy carbonyl-methyl urethane] as emitting layer have been studied. The diode structures have been made by utilizing indium tin oxide coated glass as an anode and aluminum as a cathode. Polyaniline and tris(8-hydroxy-quinolino) aluminum have been employed as hole and electron transport layers, respectively. Enhanced electroluminescence (EL) near the turn-on voltage has been observed on addition of 4-dicyanomethylene-2-methyl-6-(p-dimethylaminostyryl)-4H-pyran dye. On the basis of current–voltage, luminance–voltage, capacitance–voltage, and impedance measurements, an attempt has been made to understand the mechanism of EL emission in these polymeric light emitting diodes. |
Databáze: | OpenAIRE |
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