Vibrationally Resolved Fluorescence from Organic Molecules near Metal Surfaces in a Scanning Tunneling Microscope

Z. C. Dong, X. L. Guo, A. S. Trifonov, P. S. Dorozhkin, K. Miki, K. Kimura, S. Yokoyama, S. Mashiko

Результат исследований: Вклад в журналСтатьярецензирование

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Аннотация

Intrinsic molecular fluorescence from porphyrin molecules on Au(100) has been realized by using a nanoscale multimonolayer decoupling approach with nanoprobe excitation in the tunneling regime. The molecular origin of luminescence is established by the observed well-defined vibrationally resolved fluorescence spectra. The molecules fluoresce at low “turn-on” voltages for both bias polarities, suggesting an excitation mechanism via hot electron injection from either tip or substrate. The excited molecules decay radiatively through Franck-Condon [Formula presented] transitions.

Язык оригиналаАнглийский
ЖурналPhysical Review Letters
Том92
Номер выпуска8
DOI
СостояниеОпубликовано - 2004
Опубликовано для внешнего пользованияДа

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