| 摘要 |
<p>A novel fluorescent material is provided which has the excellent effects of having high luminescence intensity and being less influenced by temperature changes. Also provided is a process for easily producing this novel fluorescent material in a room-temperature environment. The fluorescent material is characterized by comprising an A2BF6 base crystal (wherein A is K, Na, Rb, or Cs, and B is Si, Ge, Sn, Ti, or Zr, provided that combinations of K and Si, K and Ge, and K and Ti are excluded) which has been partly substituted by a transition metal. The process for producing the fluorescent material is characterized by immersing a B-containing material (B is Si, Ge, Sn, Ti, or Zr, provided that the material is not an oxide material) in a liquid mixture prepared by adding AMnO4 (A is K, Na, Rb, or Cs) to an aqueous HF solution and depositing, on the surface layer of the material, a fluorescent material comprising an A2BF6 base crystal which has been partly substituted by Mn, or by immersing a B-containing oxide material in the liquid mixture to react the liquid mixture with the material and thereby yield a fluorescent material constituted of a crystalline material comprising an A2BF6 base crystal which has been partly substituted by Mn.</p> |
