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

doi:10.1143/jjap.41.4898

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 journal › Article › peer-review

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 language	English
Pages (from-to)	4898-4902
Number of pages	5
Journal	Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume	41
Issue number	7 B
DOIs	https://doi.org/10.1143/jjap.41.4898
Publication status	Published - Jul 2002
Externally published	Yes

All Science Journal Classification (ASJC) codes

Engineering(all)
Physics and Astronomy(all)

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Dong, Z. C., Kar, A., Zou, Z. Q., 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, 41(7 B), 4898-4902. https://doi.org/10.1143/jjap.41.4898

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, 07.2002, p. 4898-4902.

Research output: Contribution to journal › Article › peer-review

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. https://doi.org/10.1143/jjap.41.4898

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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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.",

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AU - Yokoyama, Shiyoshi

AU - Terui, Toshifumi

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AU - Mashiko, Shinro

AU - Okamoto, Takayuki

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AB - 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.

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