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

研究成果: Contribution to journalArticle査読

24 被引用数 (Scopus)

抄録

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.

本文言語英語
ページ(範囲)702-707
ページ数6
ジャーナルSurface Science
493
1-3
DOI
出版ステータス出版済み - 11 1 2001
外部発表はい

All Science Journal Classification (ASJC) codes

  • 凝縮系物理学
  • 表面および界面
  • 表面、皮膜および薄膜
  • 材料化学

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