Poly(ethylene imine) impurities induce n-doping reaction in organic (semi)conductors.
basic_science · Level V
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- Record sourced from PubMed, PMID 25043202.
- Also identified by DOI 10.1002/adma.201401986.
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Abstract
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.