Data di Pubblicazione:
2010
Abstract:
A physically based mathematical model for the dc current of single-carrier organic light emitting
diodes is presented. The model accounts for the most important physical quantities that influence the
carrier mobility and thus the device current itself: temperature, charge carrier concentration, and
electric field. It is rigorously developed basing on the variable range hopping transport theory and
extends the pioneering work of Mark and Helfrich J. Appl. Phys. 33, 205 1962 to large electric
fields typical of light emitting diodes. It was validated on experimental data collected from devices
of different materials in a wide range of operating conditions. Thanks to the effective electric field
approach, the mathematical expression is simple, accurate and suitable for CAD applications.
diodes is presented. The model accounts for the most important physical quantities that influence the
carrier mobility and thus the device current itself: temperature, charge carrier concentration, and
electric field. It is rigorously developed basing on the variable range hopping transport theory and
extends the pioneering work of Mark and Helfrich J. Appl. Phys. 33, 205 1962 to large electric
fields typical of light emitting diodes. It was validated on experimental data collected from devices
of different materials in a wide range of operating conditions. Thanks to the effective electric field
approach, the mathematical expression is simple, accurate and suitable for CAD applications.
Tipologia CRIS:
1.1 Articolo in rivista
Elenco autori:
Torricelli, Fabrizio; Zappa, Dario; Colalongo, Luigi
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