Light emission from porphyrin molecules induced by a scanning tunneling microscope

Zhen Chao Dong, Asit Kar, Zhi Qiang Zou, Taizo Ohgi, Pavel Dorozhkin, Daisuke Fujita, Shiyoshi Yokoyama, Toshifumi Terui, Toshiki Yamada, Toshiya Kamikado, Minniu Zhou, Shinro Mashiko, Takayuki Okamoto

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

Positioning of a scanning tunneling microscope (STM) tip above Cu-tetra-(3,5-di-tertiary-butyl-phenyl)-porphyrin (Cu-TBPP) molecules on Cu(100) is found to induce plasmon-mediated emission and molecular luminescence when bias voltages are above ∼ 2.3 V. Optical spectra acquired at a low current of 0.2 nA suggest not only the enhancement effect of the molecules on light emission but also new features associated with the molecules. The quantum efficiency of such light emission excited by inelastic tunneling is on the order of 10-6 photons per electron.

Original languageEnglish
Pages (from-to)4898-4902
Number of pages5
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume41
Issue number7 B
Publication statusPublished - Jul 1 2002
Externally publishedYes

Fingerprint

Light emission
Porphyrins
porphyrins
light emission
Microscopes
microscopes
Scanning
Molecules
scanning
molecules
low currents
Bias voltage
Quantum efficiency
positioning
optical spectrum
Luminescence
quantum efficiency
Photons
luminescence
Electrons

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

Dong, Z. C., Kar, A., Zou, Z. Q., Ohgi, T., Dorozhkin, P., Fujita, D., ... Okamoto, T. (2002). Light emission from porphyrin molecules induced by a scanning tunneling microscope. Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, 41(7 B), 4898-4902.

Light emission from porphyrin molecules induced by a scanning tunneling microscope. / Dong, Zhen Chao; Kar, Asit; Zou, Zhi Qiang; Ohgi, Taizo; Dorozhkin, Pavel; Fujita, Daisuke; Yokoyama, Shiyoshi; Terui, Toshifumi; Yamada, Toshiki; Kamikado, Toshiya; Zhou, Minniu; Mashiko, Shinro; Okamoto, Takayuki.

In: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, Vol. 41, No. 7 B, 01.07.2002, p. 4898-4902.

Research output: Contribution to journalArticle

Dong, ZC, Kar, A, Zou, ZQ, Ohgi, T, Dorozhkin, P, Fujita, D, Yokoyama, S, Terui, T, Yamada, T, Kamikado, T, Zhou, M, Mashiko, S & Okamoto, T 2002, 'Light emission from porphyrin molecules induced by a scanning tunneling microscope', Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, vol. 41, no. 7 B, pp. 4898-4902.
Dong, Zhen Chao ; Kar, Asit ; Zou, Zhi Qiang ; Ohgi, Taizo ; Dorozhkin, Pavel ; Fujita, Daisuke ; Yokoyama, Shiyoshi ; Terui, Toshifumi ; Yamada, Toshiki ; Kamikado, Toshiya ; Zhou, Minniu ; Mashiko, Shinro ; Okamoto, Takayuki. / Light emission from porphyrin molecules induced by a scanning tunneling microscope. In: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers. 2002 ; Vol. 41, No. 7 B. pp. 4898-4902.
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