Neodymium-and-ytterbium-codoped alkaline earth fluoride glass up-conversion luminescent material, and preparation method and application thereof
A technology of alkaline earth fluoride, luminescent material, applied in the direction of luminescent material, chemical instrument and method, semiconductor/solid-state device manufacturing, etc.
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[0028] The preparation method of the above-mentioned neodymium and ytterbium co-doped alkaline earth fluoride salt glass up-conversion luminescent material comprises the following steps:
[0029] Step S11, according to MeF 2 : xYb 3+ ,yNd 3+ The stoichiometric ratio of each element is weighed in MeF 2 , YbF 3 and NdF 3 Powder, wherein x is 0.005-0.05, y is 0.002-0.03, and Me is one of magnesium, calcium, strontium and barium elements.
[0030] In this step, the MeF 2 , YbF 3 and NdF 3 The molar ratio of each component of the powder is (92-99.3): (0.5-5): (0.2-3).
[0031] In this step, preferably, MeF 2 , YbF 3 and NdF 3 The molar ratio of each component of the powder is 96:3:1.
[0032] Step S13, mixing the powder weighed in step S11 evenly to obtain a precursor.
[0033] In this step, the powder is ground in a corundum bowl for 20 minutes to 60 minutes to obtain a uniformly mixed precursor, preferably for 40 minutes.
[0034] Step S15, burning the precursor at ...
Embodiment 1
[0042] The powder with a purity of 99.99% is selected, and the MgF 2 , YbF 3 and NdF 3 Each component of the powder is 0.96mmol, 0.03mmol, 0.01mmol by mole, grind it in a corundum mortar for 40 minutes to make it evenly mixed, then burn it in a muffle furnace at 950°C for 3 hours, then cool it down to 250°C and keep it warm After 2 hours, cool to room temperature with the furnace and take it out to obtain a bulk material, which can be crushed to obtain a chemical formula of MgF 3 : 0.03Yb 3+ , 0.01Nd 3+ Up-converting phosphors.
[0043] The process of making organic light-emitting diodes
[0044] The sequentially stacked substrate 1 uses soda-lime glass, the cathode 2 uses a metal Ag layer, and the organic light-emitting layer 3 uses Ir(piq)2(acac), the Chinese name is bis(1-phenyl-isoquinoline)(acetylacetonate) iridium (III), the transparent anode 4 uses indium tin oxide ITO, and the transparent encapsulation layer 5 is polytetrafluoroethylene. The transparent encapsul...
Embodiment 2
[0049] The powder with a purity of 99.99% is selected, and the MgF 2 , YbF 3 and NdF 3 Each component of the powder is 0.965mmol, 0.005mmol, 0.03mmol by mole, grind it in a corundum mortar for 20 minutes to make it evenly mixed, then burn it in a muffle furnace at 800°C for 3 hours, then cool it down to 100°C and keep it warm After 3 hours, take it out after cooling down to room temperature with the furnace to obtain a block material, which can be crushed to obtain the general chemical formula of MgF 3 : 0.005Yb 3+ , 0.03Nd 3+ up-converting phosphors.
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