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COMPOSITE SIALON PHOSPHOR POWDER CAPABLE SIMULTANEOUSLY EMITTING YELLOW AND GREEN LIGHT AND HAVING HIGH COLOR RENDERING AND THERMAL STABILITY
COMPOSITE SIALON PHOSPHOR POWDER CAPABLE SIMULTANEOUSLY EMITTING YELLOW AND GREEN LIGHT AND HAVING HIGH COLOR RENDERING AND THERMAL STABILITY
PURPOSE: A composite sialon phosphor powder is provided to provide a phosphor which has uniform light-emitting performance within a wide temperature range, has high color rendering in a green and yellow region, and has excellent thermal stability.;CONSTITUTION: A composite sialon phosphor powder consists of a first phase represented by Si_(6-z)Al_zO_zN_(8-z):Re_y nad a second phase represented by M_xSi_(12-m-n)Al_(m+n)O_nN_(16-n):Re_y. In the first phase, 0.05z0.3, 0.01y0.02, Re is, as an activator, one or more elements selected from Eu, Ce, Tb, Yb, Sm, and Dy. In the second phase, M is one or more elements selected from Li, Mg, Ca, and Y, Re is the same as the Re of the first phase, 0.3=m=1.0, m=2n, 0.02=y=0.15, and m=2x+3y.;COPYRIGHT KIPO 2013
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