Comparative study of hole transport in poly(p-phenylene vinylene) derivatives
article
The dc mobility of holes in four poly(p-phenylene vinylene) (PPV) derivatives (three fully conjugated polymers with different side chains and one partially conjugated PPV) is examined as a function of temperature T and applied electrical field E. In all cases the mobility μ follows the empirical μ∝exp γ√E law. The specific temperature and electrical field dependence of the mobility is fitted within a (correlated) Gaussian disorder model. From the fits the energetic disorder, localization length, and average transport-site separation are determined. In the case of the fully conjugated polymers the different T and E dependencies of μ are completely determined by the energetic disorder. The relation between the obtained microscopic transport parameters and the specific chemical composition of the polymer material is discussed.
TNO Identifier
235779
ISSN
01631829
Source
Physical Review B. Condensed Matter and Materials Physics, 61(11), pp. 7489-7493.
Publisher
American Physical Society AIP
Pages
7489-7493
Files
To receive the publication files, please send an e-mail request to TNO Repository.