PHOSPHOR, METHOD FOR PRODUCING SAME, LIGHT EMITTING ELEMENT AND LIGHT EMITTING DEVICE
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United States of America Patent
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Issued Date -
Jul 18, 2024
app pub date -
Mar 30, 2022
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May 21, 2021
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Abstract
Provided are a phosphor emitting light having a wavelength of 600 nm or more in the red-to-nearinfrared range when irradiated with visible light or ultraviolet light; a method for producing same; a light emitting element using same; and a light emitting device using same. The phosphor includes an inorganic compound including A element, M element, D element, E element (A is at least one element selected from the group of Mg, Ca, Sr and Ba; M is at least one element selected from the group of Mn, Eu, Ce, Nd, Tb, Dy, Ho, Er, Tm and Yb; D is Si and/or Al; and E is O and/or N) and, if necessary, G element (G is Li), and represented by (A, M)aDdEeGg, (atomic fraction parameters a, d, e and g satisfy 2.4≤a≤4.8, 17.4≤d≤22.2, 26.2≤e≤28.6 and 0≤g≤3).
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