Patent ID: 7772077

Claim:
A method of forming a semiconductor structure, comprising: providing a semiconductor substrate comprising a first transistor element and a second transistor element; implanting said semiconductor substrate with ions of a non-doping element to form at least one first amorphous region in said first transistor element and at least one second amorphous region in said second transistor element; forming a stress-creating layer over said first transistor element, wherein said stress-creating layer does not cover said second transistor element; performing a first annealing process using at least one of a rapid annealing process or a furnace annealing process, said first annealing process being adapted to induce solid phase epitaxial regrowth to re-crystallize said first amorphous region and said second amorphous region; and after performing said first annealing process, performing a second annealing process by irradiating said semiconductor structure with laser radiation to activate dopants in said first and second transistor elements, wherein said stress-creating layer remains over said first transistor element during said second annealing process.