Patent ID: 7622330

Claim:
A method of fabricating composite substrates of semiconductor materials for use in optics, electronics, or optoelectronics which comprises: associating a plurality of transfer layers in spaced relation upon an intermediate support; providing a support layer on each transfer layer to form a composite substrate; providing each transfer layer, the intermediate support, or both with a bonding layer prior to associating the transfer layers with the intermediate support; detaching the composite substrates from the intermediate support; and removing the bonding layer(s) from the composite substrates after they are detached from the intermediate support, wherein in each composite substrate the transfer layer is made of at least one of silicon (1,1,1,), silicon carbide, a monocrystalline material, sapphire, diamond, gallium nitride, aluminum nitride, or a combination of at least two of these materials, the support layer is made of at least one of silicon, silicon carbide, sapphire, diamond, graphite, gallium nitride, aluminum nitride, or a combination of at least two of these materials, and the transfer layer is a relatively thin layer compared to the support layer which is a relatively thick layer.