emitting diodes

Abstract: The present paper reports kinetics of transient behaviour of OLEDs on the basis of bimolecular recombination. An expression is derived for brightness of OLEDs and found to be increase quadratically with time and should attain saturation depending on current density. When voltage is turned off, the brightness should decay exponentially and then decrease following power law decay. The present study is helpful in determination of exciton lifetime, recombination coefficient and mobility of charge carriers