Emission Color Tuning of Green Emitting ZnS-Based CRT Phosphors

Bredol, Michael; Merikhi, J.; Köhler, I.; Bechtel, Helmut; Czarnojan, W.

doi:10.1006/jssc.1994.1166

Cited by 5 publications

(3 citation statements)

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“…The 7 nm blue shift observed with RL sources prepared with 0.5 mCi drops to 5 nm when 0.1 mCi is used. These observations are consistent with the well-characterized relationship between electron excitation density and emission wavelength of inorganic phoshors. , From a practical standpoint, magnitude of the blue shift is relatively small and has a negligible impact on performance as an excitation source for the ruthenium fluorophore.…”

Section: Resultssupporting

confidence: 87%

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Radioluminescent Light Source for Optical Oxygen Sensors

Chuang

Arnold

1997

Anal. Chem.

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A self-powered radioluminescent (RL) light source is evaluated as a means of supplying incident radiation for optical chemical sensors. The light source consists of 147 Pm (a -emitting radionuclide) and ZnS:Ag phosphor. Blue light (450 nm) is produced following the excitation of ZnS:Ag from particles released by the 147 Pm. The utility of this source is judged by evaluating the analytical performance of optical oxygen sensors, where the blue light from the RL source excites a ruthenium complex immobilized in a plasticized PVC or silicon membrane. Analytical information is acquired by measuring the magnitude of oxygen-induced fluorescence quenching of the ruthenium complex. The resulting RL oxygen sensors show good stability and reversibility, with detection limits of 0.25 Torr in gaseous samples and 0.028 ppm in aqueous samples. Although the RL light source is not as bright as conventional electrical-powered sources, RL sources offer the advantages of compact size, simple configuration, low power consumption, and essentially no photobleaching of the oxygen-sensitive indicator dye. In addition, different phosphors are available to provide a variety of emission wavelengths and band-passes over a wide spectral range.

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Section: Resultssupporting

confidence: 87%

“…The mechanism of light production involves formation of donor/acceptor pairs within the solid-state matrix upon excitation by β electrons. Visible photons are produced with the recombination of these donor/acceptor pairs. , Mixing promethium-147 and the ZnS:Ag phosphor produces a self-powered source of blue electromagnetic (em) radiation.…”

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confidence: 99%

Radioluminescent Light Source for Optical Oxygen Sensors

Chuang

Arnold

1997

Anal. Chem.

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“…Cu doped ZnS phosphors with green-blue emission have attracted great attention and are extensively researched [1][2][3][4][5][6][7][8][9]. They have been applied in electronic display devices, CRTs, safety markers, and the LED phosphors [10,11]. The conventional route to prepare ZnS:Cu,Cl phosphors is the high-temperature solid-state method.…”

Section: Introductionmentioning

confidence: 99%

Influence of Mechanical Milling and Annealing Atmosphere on the Photoluminescence Properties of ZnS:Cu,Cl Phosphors

Wang

Huang

Xia

et al. 2008

KEM

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ZnS:Cu,Cl phosphors were synthesized by high temperature (1200 °C) solid state reaction, mechanical milling (rotation speed = 0, 75, 150, 250 and 350 r / min) and the final annealing at 750 °C for 1 h in different atmospheres (hydrogen sulfide, sealed evacuated silica tubes and Ar). The as-prepared phosphors were characterized by X-ray powder diffraction and photoluminescence spectra. It was found that mechanical milling led to width increases of diffraction peaks. Both the mechanical milling and atmosphere play important roles in the photoluminescence performance of the phosphors. Some phosphors prepared by the three-step method possess higher photoluminescence performances than the normal one-step method. Particularly, the luminescence intensity of the phosphor milled at the rotation speed of 75 r / min and then treated in Ar atmosphere is about one time higher than that prepared by the normal one-step process.

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Enlightenment on Luminescent Materials

Ronda

1997

Spectroscopy and Dynamics of Collective Excitations in Solids

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Emission Color Tuning of Green Emitting ZnS-Based CRT Phosphors

Cited by 5 publications

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Radioluminescent Light Source for Optical Oxygen Sensors

Radioluminescent Light Source for Optical Oxygen Sensors

Influence of Mechanical Milling and Annealing Atmosphere on the Photoluminescence Properties of ZnS:Cu,Cl Phosphors

Enlightenment on Luminescent Materials

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