Transient electroluminescence in an organic LED based on a thin polymeric film has been experimentally studied and theoretically analyzed. The calculated and experimental curves are both characterized by anomalous dispersion and universality, which can be regarded as a manifestation of field-induced charge-carrier diffusion in the nonequilibrium transport regime. It is shown that the charge-carrier time of flight corresponds to the time to reach half the steady-state radiation intensity, rather than the delay time of the electroluminescence relative to the beginning of the applied voltage pulse.
© 2012 OSA
Original Manuscript: February 8, 2011
Published: February 29, 2012
A. R. Tameev, D. A. Lypenko, A. V. Vannikov, and V. R. Nikitenko, "Transient electroluminescence in a single-layer polymer LED," J. Opt. Technol. 79, 62-65 (2012)