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Wide energy-window view on the density of states and hole mobility of poly(p-phenylene vinylene)

I. N. Hulea·H. B. Brom·A. J. Houtepen·D. Vanmaekelbergh·J. J. Kelly·E. A. Meulenkamp
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Abstract

Using an electrochemically gated transistor, we achieved controlled and reversible doping of poly(p-phenylene vinylene) in a large concentration range. Our data open a wide energy-window view on the density of states (DOS) and show, for the first time, that the core of the DOS function is Gaussian, while the low-energy tail has a more complex structure. The hole mobility increases by more than four orders of magnitude when the electrochemical potential is scanned through the DOS.

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I. N. Hulea, H. B. Brom, A. J. Houtepen, D. Vanmaekelbergh, J. J. Kelly, E. A. Meulenkamp. 2004-09-09. Wide energy-window view on the density of states and hole mobility of poly(p-phenylene vinylene). https://arxiv.org/abs/cond-mat/0409218

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