LED device comprising yag phosphor particles and red luminescent particles

Abstract

The invention provides a luminescent body (2000) comprising first luminescent material particles (2100), second luminescent material particles (2200), and a main matrix material (700), wherein: (A) the first luminescent material particles (2100) and the second luminescent material particles (2200) are configured embedded in the main matrix material (700); (B) the first luminescent material particles (2100) comprise a first luminescent material (210) of the type A3B5O12:Ce3+, wherein A comprises one or more of Y, La, Gd, Th and Lu, and wherein B comprises one or more of Al, Ga, In and Sc; (C) the second luminescent material particles (2200) comprise a second particle matrix material (720) and primary particles (2300) comprising a second luminescent material (220), wherein the primary particles (2300) are configured embedded in the second particle matrix material (720); wherein the second luminescent material (220) comprises a luminescent material of the type M'xM2-2xAX6 doped with tetravalent manganese, wherein M' comprises an alkaline earth cation, wherein M comprises an alkaline cation, wherein A comprises a tetravalent cation, and wherein X comprises a monovalent anion, at least comprising fluorine (F); and (D) the first luminescent material particles (2100) have a first number averaged equivalent circular diameter D1, the second luminescent material particles (2200) have a second number averaged equivalent circular diameter D2, and the primary particles (2300) have a third number averaged equivalent circular diameter D3, wherein the following applies of (i) D3 ≤ 0.3*D2 and (ii) D3 ≤ 0.3*D1.

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