Fluoroborosilicate-based red phosphor, and preparation method and application thereof
A technology of fluoroborosilicate and red phosphor, applied in chemical instruments and methods, luminescent materials, electrical components, etc., can solve the problems of complex preparation methods and low luminous efficiency, and achieve simple preparation process and high color rendering , cheap effect
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Embodiment 1
[0035] Preparation of BaY 6 (Si 3 B 6 o 24 )F:0.1Eu 3+
[0036] According to the chemical formula BaY 6 (Si 3 B 6 o 24 )F:0.1Eu 3+ , respectively weighed yttrium oxide Y 2 o 3 : 1.22 g, europium oxide Eu 2 o 3 : 0.106 g, boron trioxide B 2 o 3 : 0.418 g, silicon dioxide SiO 2 : 0.36 g, ground in an agate mortar and mixed evenly, select the air atmosphere for pre-calcination, the pre-calcination temperature is 500 ° C, the calcination time is 7 hours, cool to room temperature, take out the sample; the raw material calcined for the first time is fully Mix and grind evenly, carry out the second calcination in the air atmosphere, the sintering temperature is 850°C, the calcination time is 12 hours, cool to room temperature, take out the sample; finally add 1.052 grams of excess barium fluoride BaF to the obtained mixture 2 Afterwards, it is fully ground again and placed in a muffle furnace, and calcined in an air atmosphere at a calcining temperature of 1100°C and ...
Embodiment 2
[0042] Preparation of BaLa 6 (Si 3 B 6 o 24 )F:0.0001Eu 3+
[0043] According to the chemical formula BaLa 6 (Si 3 B 6 o 24 )F:0.0001Eu 3+ , respectively weighed lanthanum oxide La 2 o 3 : 1.955 g, europium nitrate Eu (NO 3 ) 3 -6H 2 O: 0.5352 g, boric acid H 3 BO 3 : 0.742 g, silicon dioxide SiO 2 : 0.36 g, ground in an agate mortar and mixed evenly, select the air atmosphere for pre-calcination, the pre-calcination temperature is 600 ° C, after sintering for 9 hours, cool to room temperature, take out the sample; add excess fluorine to the obtained mixture Barium Fe BaF 2 : 1.052 g, fully ground again, placed in a muffle furnace, and calcined in an air atmosphere at a calcining temperature of 1000° C. for 9 hours. After cooling, the powdery fluoroborosilicate-based red luminescent material was obtained.
[0044] The excitation spectrum, emission spectrum and decay curve of the fluorescent powder obtained in this embodiment are similar to those in Embodiment...
Embodiment 3
[0046] Preparation of BaPr 6 (Si 3 B 6 o 24 )F:0.1Eu 3+
[0047] According to the chemical formula BaPr 6 (Si 3 B 6 o 24 )F:0.1Eu 3+ , respectively weighed praseodymium sulfate Pr 2 (SO 4 ) 3 -8H 2 O: 3.857 g, europium oxide Eu 2 o 3 : 0.106 g, boric acid H 3 BO 3 : 0.742 g, silicon dioxide SiO 2 : 0.36 g, ground in an agate mortar and mixed evenly, pre-calcined in an air atmosphere, the pre-calcined temperature is 450 ° C, the sintering time is 7 hours, cooled to room temperature, and the sample is taken out; the raw material calcined for the first time is fully Mix and grind evenly, carry out the second calcination in air atmosphere, sintering temperature 850°C, calcination time 12 hours, cool to room temperature, take out the sample; finally add excess barium fluoride BaF to the obtained mixture 2 : After 1.052 g, it is fully ground again and placed in a muffle furnace, and calcined in an air atmosphere at a calcining temperature of 1100° C. and a calcinin...
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