| 简介 |
PROBLEM TO BE SOLVED : To enable control of the desired position of the concentration distribution peak values of rare earth element ions and adjustment of the luminous intensity of a light-emitting element, by keeping the rare earth element ions in a predetermined distribution conditions and moving the diffusion region of rare earth element ions in a substrate depthwise direction through heat treatment.
SOLUTION : A manufacturing method comprises the steps of forming a diffusion region 16 of rare earth element ions, having a predetermined distribution in a substrate 11, and keeping rare earth element ions in a state of predetermined distribution and making the diffusion region 16 of rare earth element ions move, in the depthwise direction of the substrate 11 through heat treatment.
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