METHOD FOR PRODUCING STRAINED SEMI-CONDUCTOR BLOCKS ON THE INSULATING LAYER OF A SEMI-CONDUCTOR ON INSULATOR SUBSTRATE

Method for producing a microelectronic device comprising: a) the formation on an insulating layer of a semi-conductor on insulator type substrate, a first semi-conductor block covered with a first strain zone adapted to induce a compressive strain in said first block and a second semi-conductor block covered with a second strain zone adapted to induce a tensile strain in said second block, the first block and the second block each being formed of a lower region based on amorphous semi-conductor material, covered with an upper region of crystalline semi-conductor material in contact with one of said strain zones, b) the re-crystallization of said lower region of said first block and of said second block while using said upper region of crystalline material as starting zone for a recrystallization front.