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Red light emitting phosphor, its production and light emitting device

2025-06-18 14:584310下载
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As a red light emitting phosphor capable of efficiently emitting red light at a high luminance in response to exciting light having a wavelength of 350-420 nm, and practically used in a light emitting device for red display or a light emitting device for white or intermediate color display in combination with green and blue light emitting phosphors, the invention provides a red light emitting phosphor capable of emitting red light upon excitation with light having a wavelength of 350-420 nm and having compositional formula (1) : [in-line-formulae]AEuxLn(1-x)M2O8  (1)[/in-line-formulae] wherein A is at least one element selected from among Li, Na, K, Rb and Cs, Ln is at least one element selected from among Y and rare earth elements exclusive of Eu, M is at least one element selected from among W and Mo, and x is a positive number satisfying 0
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