Patent ID: 8196546

Claim:
An apparatus for implanting two species of ions into an implantation surface of a semiconductor wafer, comprising: a first source of plasma (first plasma), which includes a first species of ions; a second source of plasma (second plasma), which includes a second, differing, species of ions; a seal system having at least two states: (i) a first state in which the first plasma is permitted to pass through an outlet and the second plasma is sealed off, and (ii) a second state in which the second plasma is permitted to pass through the outlet and the first plasma is sealed off; and an accelerator system in communication with the outlet of the seal system, and operating to: (i) accelerate the first species of ions from the first plasma toward a semiconductor wafer, only when the seal system is in the first state, and implant the first species of ions into the implantation surface of the semiconductor wafer to a desired depth below the implantation surface of the semiconductor wafer to create an exfoliation layer therein, and (ii) accelerate the second species of ions from the second plasma toward the semiconductor wafer, only when the seal system is in the second state, implant the second species of ions into the implantation surface of the semiconductor wafer to a desired depth below the implantation surface of the semiconductor wafer to create the exfoliation layer therein.