Patent ID: 6300256
Filing Date: 2001-10-09
Classification: H01L

Abstract:
A thermo-migration process for producing electrically conductive passages in a disc-form semi-conductor having a first outer surface and a second outer surface opposed to the first outer surface wherein the first outer surface has a first distance to a heat source and the second outer surface has a second distance to a cooling device and wherein the second outer surface has a conductive doping substance applied to it, comprising:producing a temperature gradient between the two opposing outer surfaces of the semi-conductor by heating the first outer surface, with even distribution over the first outer surface to a working temperature of the thermo-migration process of 800.degree. C. to 1100.degree. C.; and cooling the second outer surface with even distribution over the second outer surface;adjusting at least one of the total efficiency of the heat input into the semi-conductor and the efficiency distribution of the heat input over the first outer surface of the semi-conductor to be heated depending upon the temperature measured on at least one temperature measurement point on the semi-conductor by changing the first and second distances.