| 摘要 |
PURPOSE:To obtain a diamond crystal chip for light-emitting elements, light emission color of which is blue and which emits light intensely by making a crystal contain 1ppm or more of boron and the content of nitride being 10ppm of less. CONSTITUTION:A diamond crystal chip is radiated with electron beams to output emission spectrum obtained from the emission phenomena at that time, that is, cathode luminescence(CL) spectrum, and from this spectrum, emission center in the crystal and the information of the band structure are obtained. By matching the optical image of the crystal surface by a microscope with the CL image, emission regions are compared. According to this result, it is known that blue emission is influenced greatly by the N concentration contained in the crystal, the smaller the concentration, the more the peak position moves to the high-frequency side, and it becomes blue, emission intensity is greatly influenced by the content of B, it increases as the content becomes larger. This makes it possible to obtain a diamond crystal chip as light-emission elements by making the contents of B and N, 1ppm or more and 10ppm or less respectively. |
