Cerium and terbium double-doped gadolinium oxide luminescent material, and preparation method and application thereof
A luminescent material and double doping technology, applied in luminescent materials, chemical instruments and methods, semiconductor devices, etc.
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[0033] The preparation method of the above-mentioned cerium-terbium double-doped gadolinium oxide luminescent material comprises the following steps:
[0034] Step S11, according to Gd 2 o 3 :xCe 3+ , yTb 3+ The stoichiometric ratio of each element is weighed as Gd 2 o 3 , CeO 2 and Tb 4 o 7 Powder, wherein, x is 0.01-0.05, and y is 0.01-0.06.
[0035] In this step, preferably, x is 0.02 and y is 0.03.
[0036] Step S12, sintering the mixed powder at 900°C-1300°C for 0.5-5 hours to obtain a cerium-terbium double-doped gadolinium oxide luminescent material, whose chemical formula is Gd 2 o 3 :xCe 3+ , yTb 3+ , wherein, x is 0.01-0.05, 0.01-0.06.
[0037] In this step, it is preferable to sinter at 1250° C. for 3 hours.
[0038]A cerium-terbium double-doped gadolinium oxide light-emitting thin film according to an embodiment, the chemical general formula of the material of the cerium-terbium double-doped gadolinium oxide light-emitting thin film is Gd 2 o 3 :xCe ...
Embodiment 1
[0064] The powder with a purity of 99.99% is selected, and the Gd 2 o 3 , CeO 2 and Tb 4 o 7 After uniform mixing according to the molar ratio of 0.95:0.02:0.03, the ceramic target material with a diameter of 50 mm and a thickness of 2 mm was sintered at 1250 ° C, and the target material was loaded into a vacuum cavity. Then, the glass substrate with ITO was ultrasonically cleaned with acetone, absolute ethanol and deionized water successively, treated with oxygen plasma, and placed in a vacuum chamber. The distance between the target and the substrate is set to 60mm. Use a mechanical pump and a molecular pump to pump the vacuum of the cavity to 5.0×10 -4 Pa, the substrate temperature is 500°C, and the laser energy is 150mJ. The chemical formula of the obtained sample is Gd 2 o 3 : 0.02Ce 3+ , 0.03Tb 3+ luminescent thin film, and then vapor-deposit a layer of Ag on the luminescent thin film as the cathode.
[0065] The general chemical formula of the cerium-terbium ...
Embodiment 2
[0070] The powder with a purity of 99.99% is selected, and the Gd 2 o 3 , CeO 2 and Tb 4 o 7 After uniform mixing according to the molar ratio of 0.98:0.01:0.01, the ceramic target material with a diameter of 50mm and a thickness of 2mm was sintered at 900°C, and the target material was loaded into a vacuum chamber. Then, the glass substrate with ITO was ultrasonically cleaned with acetone, absolute ethanol and deionized water successively, treated with oxygen plasma, and placed in a vacuum chamber. The distance between the target and the substrate was set to 45 mm. Use a mechanical pump and a molecular pump to evacuate the vacuum of the chamber to 1.0×10 -3 Pa, the substrate temperature is 250°C, and the laser energy is 80mJ. The chemical formula of the obtained sample is Gd 2 o 3 : 0.01Ce 3+ , 0.01Tb 3+ luminescent thin film, and then vapor-deposit a layer of Ag on the luminescent thin film as the cathode.
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