| 摘要 |
The present invention provides a phosphor comprising a europium-activated sialon crystal having a basic composition represented by the following formula (1) [Formula 1] formula: (Sr1-x, Eux)alphaSibetaAlgammaOdeltaNomega(1) (wherein x is 0<x<1, alpha is 0<alpha@4 and beta, gamma, delta and omega are numbers such that converted numerical values when alpha is 3 satisfy 9<beta@15, 1@gamma@5, 0.5@delta@3 and 10@omega@25), and the sialon crystal includes at least one non-Eu rare earth element selected from Sc, Y, La, Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu in a proportion of 0.1% by mass or more and 10% by mass or less, and the phosphor emitting green light by being excited by ultraviolet light, violet light or blue light. |
