Patent ID: 7195994

Claim:
A method for production of deep p regions in the silicon of a semiconductor component, the method comprising: bombarding an n region of the semiconductor component with high-energy particles; and healing the n region for a specific healing time at a specific healing temperature; wherein the step of bombarding the n region with high energy particles comprises masking the semiconductor component with a metal mask, wherein the mask is greatly thinned at regions in the semiconductor component where the bombarding step is intended to take place such that the particles lose substantially no energy in passing through the thinned sections of the mask, and wherein the mask is sufficiently thick in remaining regions of the semiconductor component such that the particles are completely absorbed and wherein the bombardment energy is sufficiently high such that the particles pass completely through the semiconductor component in the bombarded regions and emerge again on an opposite face of the semiconductor component such that the n region is redoped to become a p region at a desired depth after the specific healing time and at the specific healing temperature.