Hopping charge transport in disordered organic materials: where is the disorder?

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Effect of energetic disorder on charge carrier transport in organic materials has been reexamined. A reliable method for mobility calculation and subsequent evaluation of relevant disorder parameters has been discussed. This method is well suited for a direct calculation of the magnitude of dipolar disorder $σ_\textrm{dip}$ in polar organic materials from the current transients. Calculation of $σ_\textrm{dip}$ for several transport materials with varying concentration of polar dopants gives concentration dependences that are in reasonable agreement with theoretical predictions. A possible solution of the puzzle concerning the disorder effect on the mobility temperature dependence has been suggested.
21 pages, 6 figures

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Disordered Systems and Neural Networks, Materials Science

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http://salesiana.dossiersoluciones.com/handle/123456789/170190

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0809.4797
 http://arxiv.org/abs/0809.4797

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arXiv