Patent ID: 8564085

Claim:
A method of fabricating a semiconductor device, comprising: providing a first substrate having a radiation-sensing region disposed therein; providing a second substrate having a hydrogen implant layer, the hydrogen implant layer dividing the second substrate into a first portion and a second portion; bonding the first portion of the second substrate to the first substrate; after the bonding, removing the second portion of the second substrate, wherein the removing the second portion of the second substrate includes performing a first annealing process and a second annealing process to split the second substrate along the hydrogen implant layer, and wherein the first annealing process is performed at a first annealing temperature range, and wherein the second annealing process is performed at a second annealing temperature range hotter than the first annealing temperature range; after the removing, forming one or more microelectronic devices in the first portion of the second substrate; and forming an interconnect structure over the first portion of the second substrate, the interconnect structure containing interconnect features that are electrically coupled to the microelectronic devices.