Photon emission induced by tunneling electrons from a Cu(1 0 0) surface covered with porphyrin molecules

D. Fujita, T. Ohgi, W. L. Deng, K. Ishige, T. Okamoto, S. Yokoyama, T. Kamikado, S. Mashiko

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

An ultrahigh-vacuum scanning tunneling microscope with an optically transparent tip was used to excite photon emission from a clean Cu(1 0 0) surface and a sub-monolayer of Cu-tetra-[3,5-di-t-butylphenyl]porphyrin (Cu-TBPP) molecules chemisorbed on a Cu(1 0 0) surface. Photons generated in a nanometer-scale area just under the tip were collected within the near-field region through the apex of the optical fiber tip. Two kinds of mechanisms for the photon emission from a Cu-TBPP/Cu(1 0 0) surface are proposed. The quantum efficiency for molecular fluorescence induced by inelastic tunneling was estimated to be ∼3 × 10-6 photons/electron.

Original languageEnglish
Pages (from-to)702-707
Number of pages6
JournalSurface Science
Volume493
Issue number1-3
DOIs
Publication statusPublished - Nov 1 2001
Externally publishedYes

Fingerprint

Electron tunneling
Porphyrins
electron tunneling
porphyrins
Photons
Molecules
photons
molecules
Ultrahigh vacuum
Quantum efficiency
ultrahigh vacuum
Optical fibers
quantum efficiency
Monolayers
near fields
apexes
Microscopes
optical fibers
Fluorescence
microscopes

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

Cite this

Photon emission induced by tunneling electrons from a Cu(1 0 0) surface covered with porphyrin molecules. / Fujita, D.; Ohgi, T.; Deng, W. L.; Ishige, K.; Okamoto, T.; Yokoyama, S.; Kamikado, T.; Mashiko, S.

In: Surface Science, Vol. 493, No. 1-3, 01.11.2001, p. 702-707.

Research output: Contribution to journalArticle

Fujita, D, Ohgi, T, Deng, WL, Ishige, K, Okamoto, T, Yokoyama, S, Kamikado, T & Mashiko, S 2001, 'Photon emission induced by tunneling electrons from a Cu(1 0 0) surface covered with porphyrin molecules', Surface Science, vol. 493, no. 1-3, pp. 702-707. https://doi.org/10.1016/S0039-6028(01)01286-9
Fujita, D. ; Ohgi, T. ; Deng, W. L. ; Ishige, K. ; Okamoto, T. ; Yokoyama, S. ; Kamikado, T. ; Mashiko, S. / Photon emission induced by tunneling electrons from a Cu(1 0 0) surface covered with porphyrin molecules. In: Surface Science. 2001 ; Vol. 493, No. 1-3. pp. 702-707.
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AU - Fujita, D.

AU - Ohgi, T.

AU - Deng, W. L.

AU - Ishige, K.

AU - Okamoto, T.

AU - Yokoyama, S.

AU - Kamikado, T.

AU - Mashiko, S.

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