Tunneling-Current-Induced Light Emission from Copper Phthalocyanine Thin Films
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- Uemura Takafumi
- Department of Material and Life Science, Graduate School of Engineering, Osaka University, Japan
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- Furumoto Masako
- Department of Material and Life Science, Graduate School of Engineering, Osaka University, Japan
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- Nakano Takeshi
- Department of Material and Life Science, Graduate School of Engineering, Osaka University, Japan
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- Akai-Kasaya Megumi
- Department of Material and Life Science, Graduate School of Engineering, Osaka University, Japan PRESTO, Japan Science and Technology Agency, Japan
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- Aono Masakazu
- Nanoscale Quantum Conductor Array Project, ICORP, JST, Japan Harima Institute, RIKEN, Japan Nanomaterials Laboratory, National Institute for Materials Science, Japan
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- Saito Akira
- Department of Material and Life Science, Graduate School of Engineering, Osaka University, Japan Nanoscale Quantum Conductor Array Project, ICORP, JST, Japan Harima Institute, RIKEN, Japan
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- Kuwahara Yuji
- Department of Material and Life Science, Graduate School of Engineering, Osaka University, Japan Nanoscale Quantum Conductor Array Project, ICORP, JST, Japan Harima Institute, RIKEN, Japan
Abstract
Molecular fluorescence induced by tunneling electrons from a scanning tunneling microscope was investigated for copper phthalocyanine thin films deposited on the highly ordered pyrolytic graphite and the Au(111) substrates. No light emission was observed from the copper phthalocyanine thin films on the highly ordered pyrolytic graphite substrate, on the other hand, the fluorescence of copper phthalocyanine on the Au(111) substrate was observed with plasmon-mediated light emission related to the Au(111) substrate. These results are due to the differences in the charge injection efficiency and surface plasmon resonance mode of two substrates. The obtained fluorescence did not satisfy the quantum cutoff condition, that is, observed photon energy was higher than the energy of injected electrons. [DOI: 10.1380/ejssnt.2006.559]
Journal
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- e-Journal of Surface Science and Nanotechnology
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e-Journal of Surface Science and Nanotechnology 4 559-562, 2006
The Japan Society of Vacuum and Surface Science
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Details
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- CRID
- 1390282680163522944
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- NII Article ID
- 130004933944
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- ISSN
- 13480391
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- Text Lang
- en
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed