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Tunneling Electron Induced Fluorescence from Single Porphyrin Molecules Decoupled by Striped-Phase Octanethiol Self-assembled Monolayer |
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| Authors: | Yan-min Kuang Yun-jie Yu Yang Luo Jia-zhe Zhu Yuan Liao Yang Zhang Zhen-chao Dong |
| Affiliation: | Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, China |
| Abstract: | We investigate tunneling electron induced luminescence from isolated single porphyrin molecules that are decoupled by striped-phase self-assembled monolayer of octanethiol from the underneath Au(111) substrate. Intrinsic single-molecule electroluminescence has been realized by such decoupling at both bias polarities. The photon emission intensity acquired from the molecular lobe is found stronger than that from the molecular center. These re-sults provide useful information on the understanding of electroluminescent behavior and mechanism in molecular tunnel junctions. |
| Keywords: | Scanning tunneling microscope induced luminescence Plasmonics Porphyrin Octanethiol Self-assembled monolayer Striped-phase |
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