A short-wavelength blue high-brightness stress-luminescent material and its preparation method
A technology of stress luminescence and high brightness, applied in the direction of luminescent materials, chemical instruments and methods, etc., can solve the problems of high cost and unfavorable large-area outdoor application, and achieve the effect of low cost, simple preparation method and easy preparation
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Embodiment 1
[0031] with Ca 0.997 Pb 0.003 ZnOS as an example,
[0032] The specific operation steps are as follows:
[0033] a) Raw material: select raw material CaCO during preparation 3 , ZnS, PbO, add co-solvent LiF, weigh the raw materials according to the stoichiometric ratio of each element, then add an appropriate amount of absolute ethanol or deionized water to the mixed raw materials, and grind and mix them in an agate bowl Dried in an oven to obtain mixed powder;
[0034] b) Place the uniformly ground powder in an alumina crucible, heat up to 1000-1150°C at a heating rate of 1-10°C / min in an inert atmosphere, burn for 6-8 hours, and cool down naturally with the furnace;
[0035] c) Grinding the cooled powder obtained in step b) for 10 to 30 minutes to obtain the short-wavelength blue stress luminescent material Ca 0.997 Pb 0.003 ZnOS powder.
Embodiment 2
[0037] with Ba 0.997 Pb 0.003 ZnOS as an example,
[0038] The specific operation steps are as follows:
[0039] a) Raw material: select raw material BaCO during preparation 3 , ZnS, PbO, add co-solvent LiF, weigh the raw materials according to the stoichiometric ratio of each element, then add an appropriate amount of absolute ethanol or deionized water to the mixed raw materials, and grind and mix them in an agate bowl Dried in an oven to obtain mixed powder;
[0040] b) Place the uniformly ground powder in an alumina crucible, heat up to 900-1050°C at a heating rate of 1-10°C / min in an inert atmosphere, burn for 6-8 hours, and cool down naturally with the furnace;
[0041] c) Grinding the cooled powder obtained in step b) for 10 to 30 minutes to obtain a high-brightness stress luminescent material Ba 0.997 Pb 0.003 ZnOS powder.
Embodiment 3
[0043] with Ca 0.495 Ba 0.495 Pb 0.01 ZnOS as an example,
[0044] The specific operation steps are as follows:
[0045] a) Raw material: select raw material BaCO during preparation 3 , CaCO 3 , ZnS, PbO, add co-solvent LiF, weigh the raw materials according to the stoichiometric ratio of each element, then add an appropriate amount of absolute ethanol or deionized water to the mixed raw materials, and grind and mix them in an agate bowl Dried in an oven to obtain mixed powder;
[0046] b) Place the uniformly ground powder in an alumina crucible, raise the temperature to 950-1100°C at a heating rate of 1-10°C / min in an inert atmosphere, burn for 6-8 hours, and cool down naturally with the furnace;
[0047] c) Grinding the cooled powder obtained in step b) for 10 to 30 minutes to obtain a high-brightness stress luminescent material Ca 0.495 Ba 0.495 Pb 0.01 ZnOS powder.
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