Production of zinc sulfide electroluminescent fluorescent powder
A zinc sulfide and phosphor technology, applied in electroluminescence light sources, chemical instruments and methods, electric light sources, etc., can solve problems such as harmful and unfavorable electroluminescence lifetime and brightness, and achieve the effect of low eutectic point and easy selection.
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Embodiment 1
[0015] The raw materials ZnS, CuSO 4 (600ppm) and flux (8% by weight of ZnS, Na 2 S: MgCl 2 : BaCl 2 : S=1:2:1:1) were mixed by ball milling, placed in a capped quartz crucible, calcined in a furnace at 700°C for 3 hours, cooled to room temperature, then washed with deionized water and filtered to remove flux, and baked in an oven Dry and sieve to obtain a powder. The obtained powder was ball milled for 2 hours, annealed at 750°C for 2 hours, cooled in air, washed with dilute hydrochloric acid, deionized water, sodium cyanide and deionized water, and finally filtered, dried and sieved to obtain the finished product green Phosphor. The test results are shown in Table 1.
Embodiment 2
[0017] The raw materials ZnS, CuSO 4 (600ppm) and flux (8% by weight of ZnS, Na 2 S: MgCl 2 : BaCl 2 : S=1:2:2:1) were mixed by ball milling, placed in a covered quartz crucible, calcined in a furnace at 700°C for 5 hours, cooled to room temperature, then washed with deionized water and filtered to remove the flux, and dried in an oven , and sieve to obtain powder. The obtained powder was ball milled for 2 hours, annealed at 750°C for 2 hours, cooled in air, washed with dilute hydrochloric acid, deionized water, sodium cyanide and deionized water, and finally filtered, dried and sieved to obtain the finished product green Phosphor. The test results are shown in Table 1.
Embodiment 3
[0019] The raw materials ZnS, CuSO 4 (600ppm) and flux (8% by weight of ZnS, Na 2 S: MgCl 2 : BaCl 2 : S=1:2:2:1) were mixed by ball milling, placed in a covered quartz crucible, calcined in a furnace at 800°C for 3 hours, then cooled to room temperature, then washed with deionized water and filtered to remove the flux, and placed in an oven Dry and sieve to obtain powder. The obtained powder was ball milled for 2 hours, annealed at 750°C for 2 hours, cooled in air, washed with dilute hydrochloric acid, deionized water, sodium cyanide and deionized water, and finally filtered, dried and sieved to obtain the finished product green Phosphor. The test results are shown in Table 1.
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