Mechanism of electroluminescence in dye doped thiophene based conjugated polymer

Autor: K. G. Chittibabu, Jayant Kumar, Sukant K. Tripathy, Mario J. Cazeca, Amarjeet Kaur
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