Modulated photoluminescence of graphene quantum dots in the vicinity of an individual silver nano-octahedron.
Modulated photoluminescence of graphene quantum dots in the vicinity of an individual silver nano-octahedron.
复制标题
单个银纳米八面体附近石墨烯量子点的调制光致发光
DOI:
10.1039/c3cp53660b
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发表时间:
2014-02
期刊:
影响因子:
--
通讯作者:
W. S. Wang D. W. He*, Y. S. Wang*
中科院分区:
文献类型:
--
作者:
W. S. Wang D. W. He*, Y. S. Wang*
We propose an effective strategy to enhance and modulate the photoluminescence (PL) of graphene quantum dots (GQDs) in the vicinity of a single silver nano-octahedron (SNO) utilizing three-dimensional finite-difference time-domain calculations. The SNO is designed to act as a multifrequency plasmonic antenna with multiple plasmon resonance modes covering multiple emission peaks of GQDs. The spectral modifications of spontaneous emission are investigated with the variations of the GQD's position and dipole moment orientation relative to the SNO. The PL colour of the GQD can be precisely adjusted between blue and green through the strong interaction with the designed antenna. The multicolour features of GQDs will also facilitate their potential applications as eco-friendly and multifunctional optical probes. The study contributes to a deeper understanding of the PL properties of GQDs near the metallic nanoparticles.
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影响因子:
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DOI:
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发表时间:
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期刊:
arXiv: Chemical Physics
影响因子:
--
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通讯作者:
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