Method for concurrently producing at least a pair of semiconductor structures that each include at least one useful layer on a substrate

A method for concurrently producing at least a pair of semiconductor structures each including at least one useful layer on a substrate comprising:

• providing an initial semiconductor structure that includes an initial useful layer on an initial substrate;
• implanting atomic species into the initial useful layer to a controlled mean implantation depth to form a zone of weakness within the useful layer that defines first and second useful layers;
• bonding a stiffening substrate to a front face of the initial structure;
• and
• detaching the first useful layer from the second useful layer along the zone of weakness to produce a pair of semiconductor structures with a first semiconductor structure including the stiffening substrate and the first useful layer and a second semiconductor structure including the initial support substrate and the second useful layer,
• wherein the first useful layer and the second useful layer have a thickness such that both the first semiconductor structure and the second semiconductor structure are each individually suitable as an initial semiconductor structure from which a further pair of semiconductor structures can be formed by the steps of implanting, bonding and detaching.