Columbate or tantalate fluorescence material used in white-light LED, and its preparation method
A fluorescent material, niobate technology, applied in the field of fluorescent materials, can solve the problem of few research reports
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Embodiment 1
[0133] CaCO 3 , Eu 2 O 3 , Nb 2 O 5 Follow Ca 2 EuNbO 6 The stoichiometric ratio is weighed, and after mixing in a mortar, it is put into a corundum crucible with a lid and pre-fired at 625°C for 24 hours. The obtained powder is fully ground and then fired at 1000℃, 1200℃ and 1500℃ for 24h. Made into pure Ca 2 EuNbO 6 Fluorescent material. See the test results figure 1 .
Embodiment 2
[0135] CaCO 3 , Eu 2 O 3 , Nb 2 O 5 Follow Ca 2 EuNbO 6 The stoichiometric ratio is weighed, mixed evenly in a mortar, put into a corundum crucible with a lid, and pre-fired in a hydrogen atmosphere furnace at 625°C for 24 hours. The obtained powder was fully ground and then fired at 1700°C for 24 hours. Make pure Ca2EuNbO6 fluorescent material. The test result is comparable to Example 1.
Embodiment 3
[0137] CaCO 3 , Eu 2 O 3 , Nb 2 O 5 Follow Ca 2 EuNbO 6 The stoichiometric ratio is weighed, and after mixing in a mortar, it is put into a corundum crucible with a lid and pre-fired at 625°C in an oxygen atmosphere furnace for 24 hours. The obtained powder was fully ground and then fired at 1300°C for 24 hours. Made into pure Ca 2 EuNbO 6 Fluorescent material. The test result is comparable to Example 1.
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