Development of pulsed processes for the manufacture of solar cells. Quarterly progress report No. 2

The status of a program to develop ion implantation and specialized associated processes necessary to achieve automated production of silicon solar cells is reported. Implantation requirements for high efficiency solar cells are described, and a process specification for baseline 16% efficient cells is presented. Cell performance comparisons have been made in which junctions were prepared by diffusion and ion implantation. Design efforts for an ion implanter capable of implanting 100 MW/sub e/ of solar cell product per year are nearing completion.