Titanium-doped gallate up-conversion luminescence material, and preparation method and application thereof
A luminescent material, gallate technology, applied in the field of organic light-emitting diodes, to achieve the effect of low cost and simple preparation method
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[0028] The preparation method of the above-mentioned titanium-doped gallate up-conversion luminescent material comprises the following steps;
[0029] Step S101, according to TGaO 3 :xTi 4+ The stoichiometric ratio of each element is weighed as T 2 o 3 , Ga 2 o 3 and TiO 2 Powder, wherein, T is one or two kinds of lanthanum element or gadolinium element, and x is 0.002~0.06.
[0030] Preferably, x is 0.03.
[0031] It can be understood that in this step, T 2 o 3 , Ga 2 o 3 and TiO 2 Powder.
[0032] Step S102 , dissolving the weighed powder in nitric acid to prepare a solution with a metal cation concentration of 0.5 mol / L-3 mol / L.
[0033] The metal cation in solution is T 3+ , Ga 3+ and Ti 4+ ,T 3+ One or both of lanthanum ions or gadolinium ions
[0034] In this embodiment, the concentration of metal cations is 0.5 mol / L-3 mol / L.
[0035] Preferably, the step of dissolving the weighed powder in nitric acid to prepare a solution further includes: adding a ...
Embodiment 1
[0050] Weigh La 2 o 3 , Gd 2 o 3 , Ga 2 o 3 and TiO 2 Powder, La 2 o 3 , Gd 2 o 3 , Ga 2 o 3 and TiO 2 The molar ratio of each component is 0.9:0.1:0.97:0.06, dissolved in nitric acid to prepare a 1.5mol / L solution, and 0.01mol / L polyethylene glycol additive is added. Then put the solution into the atomization device, and then feed 5 L / min of argon gas into the atomization device. The solution precursor enters a quartz tube with a temperature of 180°C along with the argon carrier gas to generate the precursor, wherein the diameter of the quartz tube is 95mm and the length is 1.4m. Then the phosphor enters the condenser along with the airflow, and is finally collected by the microporous acid-resistant filter funnel. Collect the precursor of the phosphor powder, place it in a temperature-programmed furnace and calcinate for 3 hours at a calcining temperature of 1100°C to obtain La 0.9 Gd 0.1 Ga 0.97 o 3 : 0.03Ti 4+ Up-converting phosphors.
[0051] see imag...
Embodiment 2
[0054] Weigh La 2 o 3 , Gd 2 o 3 , Ga 2 o 3 and TiO 2 Powder, La 2 o 3 , Gd 2 o 3 , Ga 2 o 3 and TiO 2 The molar ratio of each component is 0.5:0.5:0.98:0.04, dissolved in nitric acid to prepare a 3mol / L solution, and 0.05mol / L polyethylene glycol additive is added. Then put the solution into the atomization device, and then feed 15 L / min argon gas into the atomization device. The solution precursor enters a quartz tube with a temperature of 220°C along with the argon carrier gas to generate the precursor, wherein the diameter of the quartz tube is 150mm and the length is 3m. Then the phosphor enters the condenser along with the airflow, and is finally collected by the microporous acid-resistant filter funnel. Collect the precursor of the fluorescent powder, place it in a temperature-programmed furnace and calcinate for 5 hours at a calcining temperature of 1300°C to obtain La 0.5 Gd 0.5 Ga 0.98 o 3 : 0.02Ti 4+ Up-converting phosphors.
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