| 摘要 |
PROBLEM TO BE SOLVED: To provide fluorescent diamond in which a fluorescence wavelength range is narrower, and a fluorescent diamond whose fluorescent strength is stronger.SOLUTION: There is provided a fluorescent diamond with a Ge luminescent center being at least one kind selected from a diamond synthesized by a CDV method, IIa type natural diamond and EL standard diamond and obtained by impregnating the diamond with Ge ions. There is also provided a method for producing a fluorescent diamond with a Ge ion luminescent center, comprising: a) a step of injecting Ge ions into a diamond; (b) a step of heating the diamond obtained by the step (a) at 700°C or higher. The concentration of Ge in the diamond is 1×10to 1×10/cm, its thickness is 0.01 mm or higher, it is being a thin film shape or a sheet shape, a peak in which the concentration of Ge is given at the 5 to 500 nm from the surface of the diamond. In the Ge luminescent center, Ge is present at a position between latices, and two holes are arranged at a position between the adjacent latices.SELECTED DRAWING: None |
