Surface Plasmon Enhanced Nitrogen‐Doped Graphene Quantum Dot Emission by Single Bismuth Telluride Nanoplates

The light–matter interaction between nitrogen‐doped graphene quantum dots (N‐GQDs) and bismuth telluride (Bi2Te3) nanoplates is investigated. A maximum of (2.9 ± 0.3)‐fold emission rate enhancement is observed at room temperature due to the coupling of N‐GQD emission with the breathing mode of surfa...

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Bibliographic Details
Published in:Advanced optical materials 2017-09, Vol.5 (17), p.n/a
Main Authors: Saleem, Umar, Permatasari, Fitri A., Iskandar, Ferry, Ogi, Takashi, Okuyama, Kikuo, Darma, Yudi, Zhao, Meng, Loh, Kian Ping, Rusydi, Andrivo, Coquet, Philippe, Birowosuto, Muhammad Danang, Wang, Hong
Format: Article
Language:English
Subjects:
bismuth telluride
Bismuth tellurides
Breathing
emission
Emission analysis
Graphene
graphene quantum dots
Intermetallic compounds
Materials science
nanoplates
Nanostructure
Nitrogen
Optics
Quantum dots
Quantum theory
surface plasmons
Tellurides
Topological insulators
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Summary:The light–matter interaction between nitrogen‐doped graphene quantum dots (N‐GQDs) and bismuth telluride (Bi2Te3) nanoplates is investigated. A maximum of (2.9 ± 0.3)‐fold emission rate enhancement is observed at room temperature due to the coupling of N‐GQD emission with the breathing mode of surface plasmon of single Bi2Te3 nanoplates. The enhancement varies with different emission wavelengths and nanoplate diameters in accordance with results obtained through the dipole radiation power in the electromagnetic simulations. From experiment, the quantum yield of N‐GQDs is obtained to be almost unity, while Bi2Te3 nanoplates may replace the conventional antenna. Such combination of novel active and plasmonic materials is promising for efficient lighting applications with multiple functionalities, especially tunable plasmonic metamaterial based on topological insulators. Nitrogen‐doped graphene quantum dots are high‐quantum‐yield nanoemitters and they are coupled with bismuth telluride nanoplates. Emission rate enhancement is observed due to coupling of nanoemitters to the breathing mode of surface plasmons. The enhancement can be tuned by the emission wavelength and the nanoplate diameters and it well agrees with the electromagnetic simulation. Such a novel system offers new strategies for lighting applications.
ISSN:2195-1071
2195-1071
DOI:10.1002/adom.201700176