Quantitative analysis of the guest-concentration dependence of the mobility in a disordered fluorene-arylamine host-guest system in the guest-to-guest regime

H.T. Nicolai, A.J. Hof, M. Lu, P.W.M. Blom, R.J. Vries, de, R. Coehoorn

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Abstract

The charge transport in a polyspirobifluorene derivative with copolymerized N,N,N',N'-tetraaryldiamino biphenyl (TAD) hole transport units is investigated as a function of the TAD content. For TAD concentrations larger than 5%, guest-to-guest transport is observed. It is demonstrated that in this regime the charge carrier density dependent mobility can be described consistently with the extended Gaussian disorder model, with a density of hopping sites which is proportional to the TAD concentration and comparable to the molecular density.
Original languageEnglish
Article number203303
Pages (from-to)1-3
Number of pages3
JournalApplied Physics Letters
Volume99
Issue number20
DOIs
Publication statusPublished - 2011

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