Fluorophosphate Glasses for Active Device with Long Luminescence Lifetime

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The present invention discloses fluorine phosphate-based glass for an active element, having fluorescence long-life characteristics. According to an embodiment of the present invention, to achieve the above purpose, the fluorine phosphate-based glass for an active element comprises : a metaphosphate composition which includes Mg(PO_3)_2 of approximately 20-60 mol%; a fluoride composition which includes BaF_2 of approximately 20-60 mol% and CaF_2 of approximately 0-40 mol%; and a dopant which includes a rare earth element.COPYRIGHT KIPO 2019