On the width of the recombination zone in ambipolar organic field effect transistors

The performance of organic light emitting field effect transistors is strongly influenced by the width of the recombination zone. We present an analytical model for the recombination profile. By assuming Langevin recombination, the recombination zone width WW<math display="inline" overf...

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Hauptverfasser: Kemerink, Martijn (VerfasserIn) , Charrier, Dimitri S. H. (VerfasserIn) , Smits, E. C. P. (VerfasserIn) , Mathijssen, Simon G. J. (VerfasserIn) , Leeuw, Dago M. de (VerfasserIn) , Janssen, René A. J. (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 23 July 2008
In: Applied physics letters
Year: 2008, Jahrgang: 93, Heft: 3
ISSN:1077-3118
DOI:10.1063/1.2963488
Online-Zugang:Verlag, Volltext: https://doi.org/10.1063/1.2963488
Verlag, Volltext: https://aip.scitation.org/doi/10.1063/1.2963488
Volltext
Verfasserangaben:M. Kemerink, D.S.H. Charrier, E.C.P. Smits, S.G.J. Mathijssen, D.M. de Leeuw, and R.A.J. Janssen
Beschreibung
Zusammenfassung:The performance of organic light emitting field effect transistors is strongly influenced by the width of the recombination zone. We present an analytical model for the recombination profile. By assuming Langevin recombination, the recombination zone width WW<math display="inline" overflow="scroll" altimg="eq-00001.gif"><mi>W</mi></math> is found to be given byW=4.34dδ⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯√W=4.34dδ<math display="inline" overflow="scroll" altimg="eq-00002.gif"><mrow><mi>W</mi><mo>=</mo><msqrt><mrow><mn>4.34</mn><mi>d</mi><mi>δ</mi></mrow></msqrt></mrow></math>, with dd<math display="inline" overflow="scroll" altimg="eq-00003.gif"><mi>d</mi></math> and δδ<math display="inline" overflow="scroll" altimg="eq-00004.gif"><mi>δ</mi></math> the gate dielectric and accumulation layer thicknesses, respectively. The model compares favorably to both numerical calculations and measured surface potential profiles of an actual ambipolar device.
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Beschreibung:Online Resource
ISSN:1077-3118
DOI:10.1063/1.2963488