| 摘要 |
A phosphor thin film includes a matrix material expressed by a composition formula A<SUB>x</SUB>B<SUB>y</SUB>O<SUB>w</SUB>S<SUB>z</SUB>, and a substance functioning as a luminescence center in the matrix material. In the composition formula, A represents at least one element selected from the group consisting of Mg, Ca, Sr, Ba, and Zn; B represents at least one rare-earth element selected from the group consisting of Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu; O represents oxygen atoms; and S represents sulfur atoms, respectively. Molar ratios are respectively set as 0<x<5, 0<y<4, 0<=z<8, and 0<=w<=8, and 0=z=w never holds true.
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