Artículo
Millisecond radiative recombination in poly(phenylene vinylene)-based light-emitting diodes from transient electroluminescence
Autor/es | Garcia-Belmonte, Germà
Hinojo Montero, José María Barea, Eva María Bisquert, Juan Bolink, Hendrik J. |
Departamento | Universidad de Sevilla. Departamento de Ingeniería Electrónica |
Fecha de publicación | 2007-06 |
Fecha de depósito | 2021-10-25 |
Publicado en |
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Resumen | The current and electroluminescence transient responses of standard poly phenylene
vinylene -based light-emitting devices have been investigated. The electroluminescence time
response is longer milliseconds scale than ... The current and electroluminescence transient responses of standard poly phenylene vinylene -based light-emitting devices have been investigated. The electroluminescence time response is longer milliseconds scale than the current switch-off time by more than one order of magnitude, in the case of small area devices 0.1 cm2 . For large area devices 6 cm2 the electroluminescence decay time decreases from 1.45 ms to 100 s with increasing bias voltage. The fast current decay limits the electroluminescence decay at higher voltages. Several approaches are discussed to interpret the observed slow decrease of electroluminescence after turning off the bias. One relies upon the Langevin-type bimolecular recombination kinetics which is governed by the minority carriers electrons , and another focuses on the slow release of trapped electrons as possible explanations. Additionally, we show that the device current density is mainly determined by the transport of the fastest carriers (holes). |
Agencias financiadoras | Ministerio de Educación y Ciencia (MEC). España Generalitat Valenciana |
Identificador del proyecto | MAT2004-038499 |
Cita | Garcia-Belmonte, G., Hinojo Montero, J.M., Barea, E.M., Bisquert, J. y Bolink, H.J. (2007). Millisecond radiative recombination in poly(phenylene vinylene)-based light-emitting diodes from transient electroluminescence. Journal of Applied Physics, 101 (11), 114506-1-114506-7. |
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