Transient electroluminescence and anomalous dispersion of charge carriers in thin polymer films |
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Authors: | A R Tameev V R Nikitenko D A Lypenko and A V Vannikov |
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Institution: | (1) Condensed Matter and Interfaces, Debye Institute, Utrecht University, P.O. Box 80000 3508 TA, Utrecht, The Netherlands |
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Abstract: | The electroluminescence and charge carrier transport in an organic light-emitting diode based on a thin polymer film are investigated.
The initial kinetics of transient electroluminescence is analyzed theoretically. Both the theoretical and experimental curves
are characterized by an anomalous dispersion and universality, which can be considered a consequence of the nonequilibrium
field-assisted dispersion of charge carriers. It is demonstrated that the drift mobility of charge carriers should be determined
from the time corresponding to the half-height of the steady-state electroluminescence intensity rather than from the delay
time of the electroluminescence. |
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Keywords: | |
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