Thulium-doped tellurate glass up-conversion luminescent material, and preparation method and application thereof
A technology of tellurite glass and luminescent materials, applied in luminescent materials, chemical instruments and methods, semiconductor devices, etc., to achieve the effect of simple preparation method and low cost
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[0029] The method for preparing the above-mentioned thulium-doped tellurite glass upconversion luminescent material includes the following steps;
[0030] Step S 101, follow Te a Ti b La c O m : DTm 3+ The stoichiometric ratio of each element is called TeO 2 , TiO 2 , La 2 O 3 And Tm 2 O 3 Powder, where a is 0.85~0.92, b is 0.02~0.06, c is 0.01~0.08, d is 0.01~0.05, m is 1.935~1.99, and a+b+c+d=1.
[0031] Preferably, a is 0.88, b is 0.05, c is 0.05, d is 0.02, and m is 1.965.
[0032] It is understandable that TeO can also be weighed according to the molar ratio (0.85~0.92): (0.02~0.06): (0.005~0.04): (0.005~0.025) in this step 2 , TiO 2 , La 2 O 3 And Tm 2 O 3 Powder.
[0033] Step S102, dissolving the weighed powder in nitric acid to prepare a solution with a metal cation concentration of 0.5 mol / L to 3 mol / L.
[0034] The metal cation in the solution is Te 4+ , Ti 4+ , La 3+ , And Tm 3+ .
[0035] In this embodiment, the concentration of nitric acid is 0.3 mol / L to 3 mol / L.
[0036] P...
Embodiment 1
[0051] Weigh TeO 2 , TiO 2 , La 2 O 3 And Tm 2 O 3 The powder, whose molar quantities are respectively 0.88mmol, 0.05mmol, 0.025mmol, 0.01mmol, is dissolved in nitric acid to prepare a 1.5mol / L solution, and 1.2g of polyethylene glycol additive is added. Then put the solution into the atomization device, and then pass 3L / min of argon into the atomization device. The solution precursor enters the quartz tube with a temperature of 180℃ with the argon carrier gas to generate the precursor. The quartz tube has a diameter of 95mm and a length of 1.4m; then the precursor of the phosphor enters the condenser with the gas flow, and is finally acid-resistant by the micropores Collected by filtration funnel. The precursor of the phosphor is collected and calcined in a programmed temperature furnace for 3 hours at a calcining temperature of 1100°C, and the chemical formula is Te 0.88 Ti 0.05 La 0.05 O 1.965 :0.02Tm 3+ Up-conversion phosphor.
[0052] See image 3 , image 3 The middle curv...
Embodiment 2
[0057] Weigh TeO 2 , TiO 2 , La 2 O 3 And Tm 2 O 3 The powder, whose molar amounts are respectively 0.85mmol, 0.02mmol, 0.04mmol, 0.025mmol, are dissolved in nitric acid to prepare a 0.5mol / L solution, and 2g of polyethylene glycol additives are added. Then put the solution into the atomization device, and then pass 8L / min of argon into the atomization device. The solution precursor enters the quartz tube with a temperature of 220℃ with the argon carrier gas to generate the precursor. The diameter of the quartz tube is 150mm and the length is 3m. Then the precursor of the phosphor enters the condenser with the airflow, and is finally filtered by the microporous acid-resistant filter. Collected through the funnel. The precursor of the phosphor is collected and calcined in a programmed temperature furnace for 5 hours at a calcining temperature of 1300°C, and the chemical formula is Te 0.85 Ti 0.02 La 0.08 O 1.935 :0.05Tm 3+ Up-conversion phosphor.
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