ULTRAVIOLET-EMITTING MATERIAL AND ULTRAVIOLET LIGHT SOURCE

摘要

There is provided an ultraviolet emitting material of one of types: (±) an ultraviolet-emitting material that is formed so as to include Mg 1-x Zn x O (0 < x < 0.55) with a rock-salt structure or Be 1-x-y-z Mg y Zn x Ca z O (0.45‰¤ y + z < 1, 0 < x ‰¤ 0.55) with a rock-salt structure; (²) an ultraviolet emitting material with a quantum well structure that includes a well layer that is formed of an Mg 1-x Zn x O (0 < x < 0.55) single crystal with a rock-salt structure and a barrier layer that is formed of an Mg 1-w Zn w O (0 ‰¤ w < 0.45, w < x) single crystal with a rock-salt structure; and (³) an ultraviolet emitting material with a quantum well structure that includes a well layer and a barrier layer, each of which is formed of a Be 1-x-y-z Mg y Zn x Ca z O (0.5 ‰¤ y ‰¤ 1, 0 ‰¤ x + z ‰¤ 0.5) single crystal with a rock-salt structure.