Nanowire dimer optical antenna brightens the surface defects of silicon
Plasmonic hot spots located between metallic dimer nanostructures have been utilized comprehensively to achieve efficient light emission. However, different from the enhancement occurred in the plasmonic hot spot, the investigation of light emission off the hot spot on submicron scale remains challe...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
De Gruyter
2023-03-01
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| Series: | Nanophotonics |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/nanoph-2022-0742 |
| _version_ | 1797817374060052480 |
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| author | Li Ze You Qingzhang Wang Hui Zhang Lisheng Zhang Duan Jia Shangtong Fang Yan Wang Peijie |
| author_facet | Li Ze You Qingzhang Wang Hui Zhang Lisheng Zhang Duan Jia Shangtong Fang Yan Wang Peijie |
| author_sort | Li Ze |
| collection | DOAJ |
| description | Plasmonic hot spots located between metallic dimer nanostructures have been utilized comprehensively to achieve efficient light emission. However, different from the enhancement occurred in the plasmonic hot spot, the investigation of light emission off the hot spot on submicron scale remains challenge. In this work, we have constructed a plasmonic nanowire dimer (NWD) system to brighten the light emission of the surface defects of silicon off the hot spot on the submicron scale. The NWD can trap light through plasmonic gap, then, the excited emitter on the submicron scale can radiate light efficiently by coupling with the dipole gap plasmonic mode. Furthermore, the coupling of dipole plasmonic mode with the emitters can be tuned by changing the gap size, and then photoluminescence emission was drastically enhanced up to 126 folds. Theoretical simulations reveal the photoluminescence enhancement arises from the combination of the NWD’s high radiation efficiency, Purcell enhancement, efficient redirection of the emitted photoluminescence and the excitation enhancement. In this study, the photoluminescence signal can be effectively enhanced by placing nano-antenna patch on the detected low-quantum-efficiency emitters, which may open up a pathway toward controlling plasmonic gap mode enhanced light emission off the hot spot on submicron scale. |
| first_indexed | 2024-03-13T08:52:30Z |
| format | Article |
| id | doaj.art-ac8baf256dce40e483c52190499ef0f6 |
| institution | Directory Open Access Journal |
| issn | 2192-8614 |
| language | English |
| last_indexed | 2024-03-13T08:52:30Z |
| publishDate | 2023-03-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Nanophotonics |
| spelling | doaj.art-ac8baf256dce40e483c52190499ef0f62023-05-29T09:46:24ZengDe GruyterNanophotonics2192-86142023-03-011291723173110.1515/nanoph-2022-0742Nanowire dimer optical antenna brightens the surface defects of siliconLi Ze0You Qingzhang1Wang Hui2Zhang Lisheng3Zhang Duan4Jia Shangtong5Fang Yan6Wang Peijie7The Beijing Key Laboratory for Nano-Photonics and Nano-Structure, Department of Physics, Capital Normal University, Beijing100048, ChinaThe Beijing Key Laboratory for Nano-Photonics and Nano-Structure, Department of Physics, Capital Normal University, Beijing100048, ChinaThe Beijing Key Laboratory for Nano-Photonics and Nano-Structure, Department of Physics, Capital Normal University, Beijing100048, ChinaThe Beijing Key Laboratory for Nano-Photonics and Nano-Structure, Department of Physics, Capital Normal University, Beijing100048, ChinaThe Beijing Key Laboratory for Nano-Photonics and Nano-Structure, Department of Physics, Capital Normal University, Beijing100048, ChinaState Key Laboratory for Mesoscopic Physics School of Physics, Peking University, Beijing100871, ChinaThe Beijing Key Laboratory for Nano-Photonics and Nano-Structure, Department of Physics, Capital Normal University, Beijing100048, ChinaThe Beijing Key Laboratory for Nano-Photonics and Nano-Structure, Department of Physics, Capital Normal University, Beijing100048, ChinaPlasmonic hot spots located between metallic dimer nanostructures have been utilized comprehensively to achieve efficient light emission. However, different from the enhancement occurred in the plasmonic hot spot, the investigation of light emission off the hot spot on submicron scale remains challenge. In this work, we have constructed a plasmonic nanowire dimer (NWD) system to brighten the light emission of the surface defects of silicon off the hot spot on the submicron scale. The NWD can trap light through plasmonic gap, then, the excited emitter on the submicron scale can radiate light efficiently by coupling with the dipole gap plasmonic mode. Furthermore, the coupling of dipole plasmonic mode with the emitters can be tuned by changing the gap size, and then photoluminescence emission was drastically enhanced up to 126 folds. Theoretical simulations reveal the photoluminescence enhancement arises from the combination of the NWD’s high radiation efficiency, Purcell enhancement, efficient redirection of the emitted photoluminescence and the excitation enhancement. In this study, the photoluminescence signal can be effectively enhanced by placing nano-antenna patch on the detected low-quantum-efficiency emitters, which may open up a pathway toward controlling plasmonic gap mode enhanced light emission off the hot spot on submicron scale.https://doi.org/10.1515/nanoph-2022-0742nanowire dimer (nwd)optical antennasphotoluminescence (pl) spectraplasmonic gap modespurcell effectsurface enhancement raman scattering (sers) |
| spellingShingle | Li Ze You Qingzhang Wang Hui Zhang Lisheng Zhang Duan Jia Shangtong Fang Yan Wang Peijie Nanowire dimer optical antenna brightens the surface defects of silicon Nanophotonics nanowire dimer (nwd) optical antennas photoluminescence (pl) spectra plasmonic gap modes purcell effect surface enhancement raman scattering (sers) |
| title | Nanowire dimer optical antenna brightens the surface defects of silicon |
| title_full | Nanowire dimer optical antenna brightens the surface defects of silicon |
| title_fullStr | Nanowire dimer optical antenna brightens the surface defects of silicon |
| title_full_unstemmed | Nanowire dimer optical antenna brightens the surface defects of silicon |
| title_short | Nanowire dimer optical antenna brightens the surface defects of silicon |
| title_sort | nanowire dimer optical antenna brightens the surface defects of silicon |
| topic | nanowire dimer (nwd) optical antennas photoluminescence (pl) spectra plasmonic gap modes purcell effect surface enhancement raman scattering (sers) |
| url | https://doi.org/10.1515/nanoph-2022-0742 |
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