Luminescence in Eu2+-activated microcrystalline pyrophosphor

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Luminescence in Eu2+-activated microcrystalline pyrophosphor

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A microcrystalline Sr2P207:Eu2+ pyrophosphate-based phosphor was prepared by the modified solid-state diffusion. The crystalline phases were recognised using X-ray diffraction and surface morphology was studied by scanning electron microscope. Photoluminescence properties were investigated under ultraviolet-ray excitation. The Sr2P207:Eu2+ exhibits unique colour: a blue band centred at 430 nm originating from Eu2+ when excited at 328 nm, Commission Internationale de l'Eclairage chromaticity coordinate values are calculated from emission spectra of Sr2P207:Eu2+ for the prepared sample. The results show Sr2P207 is a promising microcrystalline host lattice for the solid-state lighting.

Inspec keywords: phosphors; scanning electron microscopy; diffusion; surface morphology; crystal morphology; X-ray diffraction; microfabrication; europium; strontium compounds; photoluminescence

Other keywords: microcrystalline pyrophosphate-based phosphor; blue band; Sr2P2O7:Eu; emission spectra; wavelength 430 nm; surface morphology; wavelength 328 nm; Commission Internationale de l'Eclairage chromaticity coordinate value; X-ray diffraction; photoluminescence properties; ultraviolet-ray excitation; scanning electron microscopy; solid-state diffusion; crystalline phase

Subjects: Photoluminescence in other inorganic materials; Crystal structure of specific inorganic compounds; Other methods of preparation of materials; Phosphors; Solid surface structure

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http://iet.metastore.ingenta.com/content/journals/10.1049/mnl.2012.0173
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