Gold, copper, silver and aluminum nanoantennas to enhance spontaneous emission

Details Gold, copper, silver and aluminum nanoantennas to enhance spontaneous emission Gold, copper, silver and aluminum nanoantennas to enhance spontaneous emission

2008-07-25

arxiv.org/abs/0807.4082v2

J. Comput. Theor. Nanosci. 6, 2024 (2009)

Physics

Chemical Physics

7 pages, 10 figures

Scientific paper

10.1166/jctn.2009.1259

We compute the decay rates of emitters coupled to spheroidal nanoantennas made of gold, copper, silver, and aluminum. The spectral position of the localized surface plasmon-polariton resonance, the enhancement factors and the quantum efficiency are investigated as a function of the aspect ratio, background index and the metal composing the nanoantenna. While copper yields results similar to gold, silver and aluminum exhibit different performances. Our results show that with a careful choice of the parameters these nanoantennas can enhance emitters ranging from the UV to the near-IR spectrum.

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