Abstract
In this work, spontaneous emission enhancement inducted by surface
plasmon on nano-metallic particle systems embedded in GaN-based LED
is investigated numerically. The systems under study consist of two
nano-Ag balls or cylinders. By numerically tuning geometrical parameters
of the system and polarization of the photon emitting source, we investigate
the dependence of spontaneous emission enhancement effect on those
factors. It is found that the enhancement magnitude level and peak
position are subject to geometrical characteristics of the nano-Ag
components in different manners for symmetrical and asymmetrical systems
respectively. Higher enhancement ratio for a specific wavelength can
be obtained by tweaking parameters of asymmetrical system. Polarization
dependence of enhancement effect can be utilized to improve performance
of bi-color LED.
© 2014 IEEE
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