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Red light-emitting phosphor and light-emitting device

2025-06-19 07:212760下载
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A red light-emitting phosphor capable of emitting red light upon excitation with light having a wavelength of 350 to 420 nm, represented by the following compositional formula (1) : [in-line-formulae]A(1-x)Eu(1-x-y)LnyD2xM2O8  (1)[/in-line-formulae] wherein A is at least one element selected from the group consisting of Li, Na, K, Rb and Cs, Ln is at least one element selected from rare earth elements including Y but excluding Eu, D is at least one element selected from the group consisting of Mg, Ca, Sr and Ba, M is at least one element selected from Mo and W, x is a positive number satisfying 0
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