Single-electron counting spectroscopy: simulation study of porphyrin in a molecular junction.
basic_science · Level V
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- Record sourced from PubMed, PMID 18330999.
- Also identified by DOI 10.1021/nl073292b.
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Abstract
Electron counting of a single porphyrin molecule between two electrodes shows a crossover from sub- to super-Poissonian statistics as the bias voltage is scanned. This is attributed to the simultaneous activation of states with electron transfer rates spanning several orders of magnitude. Time-series analysis of consecutive single-electron transfer events reveals fast and slow transport channels, which are not resolved by the average current alone.