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Thickness scaling of space-charge-limited currents in organic layers with field- or density-dependent mobility

✍ Scribed by Bisquert, Juan ;Montero, José M. ;Bolink, Henk J. ;Barea, Eva M. ;Garcia-Belmonte, Germà

Publisher
John Wiley and Sons
Year
2006
Tongue
English
Weight
560 KB
Volume
203
Category
Article
ISSN
0031-8965

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✦ Synopsis

Abstract

An exact solution is provided for the current density‐voltage (J –V) characteristics of space‐charge limited transport of a single carrier in organic layers with field‐dependent mobility of the type μ (E) = μ ~0~ exp (γ √E. The general scaling relationship for field‐dependent mobility occurs in terms of the variables JL and V /L. For the density‐dependence of the mobility found in organic field‐effect transistor measurements, the thickness scaling occurs in terms of different variables, J ^1/β^ L and V /L. The proposed scaling is a useful test for distinguishing field‐ and carrier density‐dependent mobility in disordered organic semiconductors. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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✍ Montero, José M. ;Bisquert, Juan ;Garcia-Belmonte, Germà ;Bolink, Henk J. ;Barea 📂 Article 📅 2007 🏛 John Wiley and Sons 🌐 English ⚖ 790 KB

## Abstract The ac impedance characteristics of a single carrier with space‐charge limited current (SCLC) transport in organic layers with field‐dependent mobility is analyzed, indicating the similarities as well as the differences to the constant mobility case. The model provides capacitance spect