Antimony and terbium codoped aluminium niobate luminescent material, and preparation method and applications thereof
A technology of luminescent materials and co-doping, applied in luminescent materials, chemical instruments and methods, semiconductor devices, etc.
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[0033] The preparation method of the above-mentioned antimony-terbium co-doped aluminum niobate luminescent material comprises the following steps:
[0034] Step S11, according to Me 2 Al 1-x-y NbO 5 : xSb 3+ ,yTb 3+ The stoichiometric ratio of each element is weighed as Me 2 CO 3 , Al 2 O 3 , Nb 2 O 5 , SbO 2 and Tb 4 O 7 The powder is mixed uniformly, wherein, x is 0.01-0.05, y is 0.01-0.08, and Me is selected from at least one of lithium element, sodium element, potassium element, rubidium element and cesium element.
[0035] Step S12, sintering the mixed powder at 900℃~1300℃ for 0.5 hour~5 hours to obtain the antimony-terbium co-doped aluminum niobate luminescent material, whose chemical formula is Me 2 Al 1-x-y NbO 5 : xSb 3+ ,yTb 3+ , wherein, x is 0.01-0.05, y is 0.01-0.08, and Me is selected from at least one of lithium carbonate, sodium carbonate, potassium carbonate, rubidium carbonate and cesium carbonate.
[0036] In this step, it is preferable to...
Embodiment 1
[0063] Select a powder with a purity of 99.99%, the Li 2 CO 3 , Al 2 O 3 , Nb 2 O 5 , SbO 2 and Tb 4 O 7 The powder is 1:0.47:0.5:0.02:0.01 in molar ratio. After uniform mixing, it is sintered at 1250°C into a ceramic target with a diameter of 50mm and a thickness of 2mm, and the target is loaded into the vacuum chamber. Then, the glass substrate with ITO was ultrasonically cleaned with acetone, absolute ethanol and deionized water successively, and then subjected to oxygen plasma treatment on it, and put into a vacuum chamber. The distance between the target and the substrate was set to 60 mm. Use mechanical pump and molecular pump to pump the vacuum degree of the cavity to 5.0×10 -4 Pa, the working gas flow rate of oxygen is 20sccm, the pressure is adjusted to 3.0Pa, the substrate temperature is 500°C, and the laser energy is 100W. The chemical formula of the obtained sample is Li 2 Al 0.94 NbO 5 : 0.02Sb 3+,0.04Tb 3+ Then, a layer of Ag is evaporated on the l...
Embodiment 2
[0069] Select a powder with a purity of 99.99%, the Li 2 CO 3 , Al 2 O 3 , Nb 2 O 5 , SbO 2 and Tb 4 O 7 According to the molar ratio of the powder is 1:0.455:0.5:0.01:0.02, after uniform mixing, it is sintered at 900°C into a ceramic target with a diameter of 50mm and a thickness of 2mm, and the target is loaded into the vacuum chamber. Then, the glass substrate with ITO was ultrasonically cleaned with acetone, absolute ethanol and deionized water successively, and then subjected to oxygen plasma treatment on it, and put into a vacuum chamber. The distance between the target and the substrate was set to 45 mm. Use mechanical pump and molecular pump to pump the vacuum degree of the cavity to 1.0×10 -3 Pa, the working gas flow rate of oxygen is 10sccm, the pressure is adjusted to 0.5Pa, the substrate temperature is 250°C, and the laser energy is 80W. The chemical formula of the obtained sample is Li 2 Al 0.91 NbO 5 : 0.01Sb 3+ ,0.08Tb 3+ Then, a layer of Ag is ev...
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