Volatile impurities contained in polyethyleneimine (PEI), and identified as ethyleneimine dimers and trimers, are reported. These N-based molecules show a strong reducing character, as demonstrated by the change in electrical conductivity of organic (semi)conductors exposed to the PEI vapor. The results prove that electron transfer rather than a dipole effect at the electrode interface is the origin of the work-function modification by the PEI-based layers.
CITATION STYLE
Fabiano, S., Braun, S., Liu, X., Weverberghs, E., Gerbaux, P., Fahlman, M., … Crispin, X. (2014). Poly(ethylene imine) Impurities Induce n-doping Reaction in Organic (Semi)Conductors. Advanced Materials, 26(34), 6000–6006. https://doi.org/10.1002/adma.201401986
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