Patent ID: 7179719

Claim:
A hydrogen (H) exfoliation method for attaching silicon-on-insulator (SOI) substrate fabricated circuits to carrier substrates, the method comprising: providing a SOI substrate, including a silicon (Si) active layer and buried oxide (BOX) layer overlying a Si substrate; forming a circuit in the Si active layer; forming a blocking mask over selected circuit areas; implanting H in the Si substrate; in response to the H implanting, forming a cleaving plane in the Si substrate; bonding the circuit to a carrier substrate; cleaving the Si substrate: wherein forming a cleaving plane in the Si substrate includes forming a horizontal peak concentration (Rp) H layer in a mask non-underlying area in the Si substrate; and, wherein cleaving the Si substrate includes: cleaving a first region along the horizontal Rp layer in the mask non-underlying area in the Si substrate; cleaving a second region along a horizontal interface between the buried oxide layer and Si substrate; and, cleaving vertically between the first and second regions.