· It is shown that a significant amount of energy can be stored at room temperature for long periods in the manganese activated zinc silicates upon excitation by short wavelength UV photons (>3.65eV), and X-ray radiation. The stored energy can be stimulated by long wavelength photons (infrared and red) resulting in visible green emission.

A method is disclosed for reproducibly producing manganese activated zinc silicate phosphor particles, which comprises dry blending a mixture of components consisting essentially of zinc oxide, silicic acid, a source of manganese, ammonium chloride, ammonium fluoride, tungstic oxide, and silica, wherein the Zu+Mn/Si mole ratio is from …

Manganese activated zinc silicate phosphor and plasma A manganese activated zinc silicate phosphor comprising phosphor particles having a crystal lattice distortion factor of 0.01 to …

Zinc silicate and zinc-beryllium silicate activated by manganese contain various types of fluorescence centres which differ in the wave length of the emitted radiation, the probability of the fluorescence transition, and the vibrational interaction with the surroundings which regulates the dissipation of energy of excitation.

The brown material contains unreacted zinc oxide with manganese present. Once the manganese activated zinc silicate phosphor is made as described above, the phosphor …

 · A manganese activated zinc silicate phosphor comprising phosphor particles having a crystal lattice distortion factor of 0.01 to 1.0% which exhibites high emission intensity and reduced afterglow time and a PDP utilizing the same which exhibites high

Zinc Silicate:Manganese. Manganese doped Zinc Silicate is available as a 99.9 pure (metals basis) powder in batch quantities. Zn 2 SiO 4 :Mn is a bright green emitting fluorescent phosphor material with an emission peak at 527.6nm. This phosphor is efficiently excited at short wavelength ultraviolet at 254nm with minimal excitation at 365nm.

 · Abstract Manganese activated zinc silicate is a classical phosphor with large applications in optoelectronic device manufacture. Some aspects concerning the influence of precursor quality on Zn 2 SiO 4 :Mn phosphor formation and properties are presented.

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A phosphor screen is formed by using a manganese-activated zinc silicate phosphor having an average particle size of 0.5 to 2.0 μm, and a zinc-to-silicon atomic ratio (Zn/Si) of 1.65 to 1.85.

Manganese activated zinc silicate is a classical phosphor with large applications in optoelectronic device manufacture. Some aspects concerning the influence of precursor quality on Zn2SiO4:Mn phosphor formation and properties are presented. Phosphor samples were prepared by classical ceramic technique from homogeneous mixtures consisting …

US Patent for Method for a producing manganese A method is disclosed for reproducibly producing manganese activated zinc silicate phosphor particles, which comprises dry …

 · The optical properties of manganese‐activated zinc silicate are investigated using pulse selective photon excitation. The light response due to the transition is directly linked to the relative ...

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The phosphor produced by the process of this invention is manganese activated zinc silicate having the formula Zn 2 SiO 4 :Mn. The first step in making the phosphor is to dry blend a mixture of the starting components which will be subsequently fired to produce the phosphor.

 · Crystalline divalent manganese-activated zinc orthosilicate (Zn2SiO4:Mn2+) nanophosphor has been synthesized via the solution-based sol–gel process. Structural, morphological, and photoluminescence (PL) properties were explored. X-ray diffraction pattern confirms the crystalline hexagonal structure of the single-phase Zn2SiO4powder.

A manganese activated zinc silicate phosphor comprising phosphor particles having a crystal lattice distortion factor of 0.01 to 1.0% which exhibites high emission intensity and reduced afterglow time and a PDP utilizing the same which exhibites high white luminance and a high luminance maintaining ratio.

Description Safety data sheets Downloads UV indicator with efficient radiation for short-wave UV ranges. UV254 - manganese activated zinc silicate with absorption maximum at 254 nm (green fluorescence). Relatively susceptible towards acids, thus its fluorescence can be completely quenched by acidic solvents.

 · Manganese activated zinc silicate phosphors are prepared by fume pyrolysis of metal alkoxide solution in an electric furnace heated at 950°C. The micr…

Filtration and washing should be done as rapidly as possible to minimize exposure of the activated zinc to air. The zinc is finally dried at 85–90° for 10 minutes in a vacuum oven ( ca. 15 mm.), cooled, and used immediately; the yield is 13–14 g. The checkers used this procedure with certified zinc powder, 325 mesh, obtained from Fisher ...

A manganese activated zinc silicate phosphor comprising phosphor particles having a crystal lattice distortion factor of 0.01 to 1.0% which exhibits high emission intensity and reduced afterglow time and a PDP utilizing the same which exhibits high white luminance and a high luminance maintaining ratio.

 · Manganese silicate was fabricated via a facile hydrothermal reaction between Na 2 SiO 3 ·9H 2 O and MnCl 2 ·4H 2 O. The morphology and microstructure of the as-prepared products were characterized by X-ray diffraction, transmission electron microscopy, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy …

 · Abstract Manganese activated zinc silicate is a classical phosphor with large applications in optoelectronic device manufacture. Some aspects concerning the influence of precursor quality...

US-4950948-A chemical patent summary.

 · Manganese activated zinc silicate is a classical phosphor with large applications in optoelectronic device manufacture. Some aspects concerning the influence of precursor quality on Zn2SiO4:Mn ...

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A manganese-activated zinc silicate phosphor according to the present invention having an average particle size of 0.5 to 2.0 μm, and an atomic ratio (Zn/Si) of zinc to silicon is 1.65 to 1.85. An image display device according to the present invention comprises a face plate, an electron source opposed to the face plate, a phosphor screen ...

A manganese activated zinc silicate phosphor and method for producing same is disclosed which comprises dry blending a mixture of components consisting essentially of zinc oxide, silicic acid, a source of manganese, ammonium chloride, ammonium fluoride, tungstic oxide and silica wherein the Zn + Mn/Si mole ratio is from about 1.95 to about 2.02, wherein …

W hile investigating a manganese-activated zinc silicate, we have found that the temperature-dependence of the dielectric losses and that of the fluorescence (2537 A. excitation) show an intricate ...

 · Manganese activated zinc silicate is a classical phosphor with large applications in optoelectronic device manufacture. Some aspects concerning the influence of …