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Electroluminescence and electric current response spectroscopy applied to the characterization of polymer light-emitting electrochemical cells
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/content/aip/journal/apl/101/11/10.1063/1.4752438
2012-09-13
2014-09-18

Abstract

Frequency-dependent electroluminescence and electric current response spectroscopy were applied to polymeric light-emitting electrochemical cells in order to obtain information about the operation mechanism regimes of such devices. Three clearly distinct frequency regimes could be identified: a dielectric regime at high frequencies; an ionic transport regime, characterized by ionic drift and electronic diffusion; and an electrolytic regime, characterized by electronic injection from the electrodes and electrochemical doping of the conjugated polymer. From the analysis of the results, it was possible to evaluate parameters like the diffusion speed of electronic charge carriers in the active layer and the voltage drop necessary for operation.

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Scitation: Electroluminescence and electric current response spectroscopy applied to the characterization of polymer light-emitting electrochemical cells
http://aip.metastore.ingenta.com/content/aip/journal/apl/101/11/10.1063/1.4752438
10.1063/1.4752438
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