Cr<3+>-doped strontium indium phosphate broadband near-infrared luminescent material and preparation method thereof
A technology of strontium indium phosphate and luminescent materials, applied in the field of near-infrared luminescent materials, to achieve the effects of easy excitation conditions, wide excitation spectrum, and low raw material prices
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[0032] Embodiment 1: The chemical composition formula of this embodiment is Sr 3 In 0.98 Cr 0.02 P 3 o 12 The specific preparation method of the broadband near-infrared luminescent material is as follows:
[0033] According to the chemical composition formula Sr 3 In 0.98 Cr 0.02 P 3 o 12 , according to the stoichiometric ratio, respectively weighed SrCO 3 ,In 2 o 3 ,NH 4 h 2 PO 4 ,Cr 2 o 3High-purity raw materials are placed in an agate mortar and an appropriate amount of absolute ethanol is added to grind for 20-40 minutes to fully mix the raw materials evenly. Heat up to 900°C at a heating rate of -3°C / min, hold for 2-6 hours, cool down to room temperature with the furnace, and regrind the sample into powder. Then transfer the ground powder to a high-temperature alumina crucible again, and place it in a box-type furnace, raise the temperature to 900°C-1300°C, keep it warm and calcined for 3-10 hours under high temperature conditions, at a rate of 5-10°C / min...
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