Abstract
We elucidated the distance-dependent plasmonic effects on radiative transitions from an ion-doped phosphor by varying the thickness of the dielectric spacer. Magnesium oxide prepared by electron-beam evaporation was chosen for the dielectric spacer. Spectral overlap between emission from ions and the plasmon band of Ag nanoparticles led to improved luminescence intensity. This luminous enhancement was effective within the area of influence by localized surface plasmon resonance. At a long distance, the plasmon-enhanced luminescence was not effective. In addition, the numerical analysis results were in good agreement with the distance-dependent decay characteristics of plasmon resonance.
© 2013 Optical Society of America
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