Patent ID: 8450193

Claim:
A method for temperature-controlled ion implantation, the method comprising the steps of: providing a platen positioned in an end station of an ion implanter, the platen having both heating and cooling elements, a heating station of the ion implanter separate from the platen, and a cooling station of the ion implanter separate from the platen; and coordinating movement of a wafer among the platen, the heating station and the cooling station and controlling a temperature of the wafer during ion implantation, wherein: for a first ion implantation mode, the wafer is loaded onto the platen which has been pre-heated, for ion implantation at a temperature above room temperature, and then unloaded to the cooling station to cool down to approximately room temperature before being unloaded from the end station of the ion implanter, and for a second ion implantation mode, the wafer is pre-chilled by the cooling station, loaded onto the platen which has been pre-chilled, for ion implantation at a temperature below room temperature, and then unloaded to the heating station to warm up to approximately room temperature before being unloaded from the end station of the ion implanter.