Patent ID: 7842590

Claim:
A method for manufacturing a semiconductor device, comprising: providing a semiconductor substrate comprising a first surface and a second surface, the second surface arranged opposite to the first surface; forming a first doping region by introducing a first dopant into the semiconductor substrate at the second surface such that its peak doping concentration in the semiconductor substrate is located at a first depth with respect to the second surface; performing at least a first laser anneal by directing at least one laser beam pulse onto the second surface to melt the semiconductor substrate, at least in sections, at the second surface to activate the first dopant; forming a second doping region by introducing a second dopant into the semiconductor surface at the second surface such that its peak doping concentration in the semiconductor substrate is located at a second depth with respect to the second surface, wherein the first depth is larger than the second depth; and performing at least a second laser anneal by directing at least a further laser beam pulse onto the second surface to melt the semiconductor substrate, at least in sections, at the second surface to activate the second dopant, wherein the second laser anneal is performed after introducing the second dopant.