Blue-white light conversion fluorescent powder on the basis of UV light excitation and preparation thereof
A phosphor and ultraviolet light technology, applied in luminescent materials, sustainable buildings, climate sustainability, etc., can solve the problems of reducing luminous efficiency, affecting color reproducibility, etc., and achieve good color rendering effect.
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[0021] Example
[0022] 1. Prepare samples N1, N2, N3 and N4
[0023] Press NaSr 1-x MoO 4 Weigh a certain amount of sodium carbonate (Na 2 CO 3 ), strontium carbonate (SrCO 3 ), ammonium molybdate tetrahydrate ((NH 4 ) 6 Mo 7 O 24 ·4H 2 O), ammonium chloride (NH 4 Cl) (all of the above are analytically pure) and a certain amount of europium oxide (Eu 2 O 3 ) (99.99%), the Eu content was 0.02, 0.05, 0.1 and 0.15, respectively; corresponding to the sample numbers N1, N2, N3 and N4 (the same below). To prevent NH 4 Cl decomposes and evaporates during the heating process, so take 10% more when weighing. Put the weighed raw material in an agate mortar and grind it for 1.5 hours to make it evenly mixed, then put the ground raw material into a corundum crucible, roast it in a high temperature resistance furnace at 900°C for 3 hours, and cool it to room temperature with the furnace. Materials required.
[0024] 2. Sample testing and characterization
[0025] XRD anal...
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