Ultraviolet or near ultraviolet inspired LED fluorescent powder and preparation method thereof
A phosphor and tungstate technology, which is applied in the field of ultraviolet or near-ultraviolet excited LED phosphor and its preparation, can solve the problems of less research on doping, and achieve the effects of simple preparation process, easy control of conditions, and cost reduction
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[0021] Example 1: Cd 0.9992 WO 4 :Sb 3+ 0.0002 Eu 3+ 0.0006 Preparation of single-substrate tungstate phosphor
[0022] 1) Weigh out 0.0006g antimony oxide (Sb 2 O 3 ), 0.0021g europium oxide (Eu 2 O 3 ), 6.1645g cadmium nitrate (Cd(NO 3 ) 2 ·4H 2 O), 6.5974g sodium tungstate (Na 2 WO 4 ·2H 2 O).
[0023] 2) Use concentrated nitric acid to completely dissolve antimony oxide (Sb 2 O 3 ) And europium oxide (Eu 2 O 3 ), respectively make antimony nitrate and europium nitrate solutions, and add zinc nitrate (Cd(NO 3 ) 2 ·4H 2 O) and sodium tungstate (Na 2 WO 4 ·2H 2 O) Dissolve with distilled water to prepare their own solutions.
[0024] 3) Mix the antimony nitrate, europium nitrate and cadmium nitrate solution thoroughly, add the sodium tungstate solution dropwise under constant stirring. After the dropwise addition is completed, continue to stir for 30 minutes to form a tungstate precipitate by suction filtration and dry at 60°C , Prepared as a precursor;
[0025] 4) After grinding th...
Example Embodiment
[0026] Example 2: Cd 0.992 WO 4 :Sb 3+ 0.002 Eu 3+ 0.006 Preparation of single-substrate tungstate phosphor
[0027] 1) Weigh out 0.0058g antimony oxide (Sb 2 O 3 ), 0.0211g europium oxide (Eu 2 O 3 ), 6.1200g cadmium nitrate (Cd(NO 3 ) 2 ·4H 2 O), 6.5974g sodium tungstate (Na 2 WO 4 ·2H 2 O).
[0028] 2) Use concentrated nitric acid to completely dissolve antimony oxide (Sb 2 O 3 ) And europium oxide (Eu 2 O 3 ), respectively make antimony nitrate and europium nitrate solutions, and add zinc nitrate (Cd(NO 3 ) 2 ·4H 2 O) and sodium tungstate (Na 2 WO 4 ·2H 2 O) Dissolve with distilled water to prepare their own solutions.
[0029] 3) Mix antimony nitrate, europium nitrate and cadmium nitrate solution thoroughly, add sodium tungstate solution dropwise under constant stirring. After the dropwise addition is completed, continue stirring for 40 minutes to form a tungstate precipitate by suction filtration and dry at 80°C , Prepared as a precursor;
[0030] 4) After grinding the precurs...
Example Embodiment
[0031] Example 3: Cd 0.9894 WO 4 :Sb 3+ 0.01 Eu 3+ 0.0006 Preparation of single-substrate tungstate phosphor
[0032] 1) Weigh out 0.0292g antimony oxide (Sb 2 O 3 ), 0.0021g europium oxide (Eu 2 O 3 ), 6.1040g cadmium nitrate (Cd(NO 3 ) 2 ·4H 2 O), 6.5974g sodium tungstate (Na2WO 4 ·2H 2 O).
[0033] 2) Use concentrated nitric acid to completely dissolve antimony oxide (Sb 2 O 3 ) And europium oxide (Eu 2 O 3 ), respectively make antimony nitrate and europium nitrate solutions, and add zinc nitrate (Cd(NO 3 ) 2 ·4H 2 O) and sodium tungstate (Na 2 WO 4 ·2H 2 O) Dissolve with distilled water to prepare their own solutions.
[0034] 3) Mix antimony nitrate, europium nitrate and cadmium nitrate solution thoroughly, add sodium tungstate solution dropwise under constant stirring. After the dropwise addition is completed, continue stirring for 40 minutes to form a tungstate precipitate by suction filtration and dry at 80°C , Prepared as a precursor;
[0035] 4) After grinding the precurso...
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