Abstract
We elucidate that the luminescence from Eu3+-doped phosphor excited by the electron collision can be modified on location near the metallic nanoparticles. The Eu3+-doped phosphor was fabricated on the nanoscaled Ag particles ranging of 5 nm to 30 nm diameter. As a result of the cathodoluminescence measurements, the phosphor films on the Ag particles showed up to twofold more than that of an isolated phosphor film. Enhanced cathodoluminescence originated from the resonant coupling between the localized surface plasmon of Ag nanoparticles and radiating energy of the phosphor. Cathodoluminescent phosphor for high luminous display devices can be addressed by locating phosphor near the surface of metallic nanoparticles.
Highlights
Localized surface plasmon resonance has attracted immense interest from many material science researchers of rare-earth ions such as europium (Eu), terbium (Tb), and dysprosium (Dy) [1]
We demonstrate how metal-induced plasmon can enhance the cathodoluminescence of a rare-earth ion doped phosphor system that is used in commercial display devices, such as a field emission display or a carbon nanotube backlight unit
The emission intensity of phosphor deposited on the Ag particles increased as the thickness of the Ag particle deposition increased
Summary
Localized surface plasmon resonance has attracted immense interest from many material science researchers of rare-earth ions such as europium (Eu), terbium (Tb), and dysprosium (Dy) [1]. The localized surface plasmon induced by a metallic nanostructure can enhance the intensity of the photoluminescence of rare-earth ions [1]. Some studies have examined the enhanced photoluminescence of rare-earth ions by using the localized surface plasmon induced by metallic particles [6,7,8,9]. Studies on enhanced luminescence mainly involve the use of rare-earth ions under optical excitation of ultraviolet light. The results of those studies fail to show the challenges of utilizing rare-earth ions in commercial display devices [9,10,11]. The fact that the emission level is intensified as a result of the excitation caused by a collision with an electron beam is an important finding since the first report in self-emissive display technology
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