Patent ID: 11942343
Assignee: ADVANCED ION BEAM TECHNOLOGY, INC.
Field: Semiconductors (Electrical engineering)
Classification: CPC H  C  G | IPC C  G  H

Claim 20:
21. A non-transitory computer-readable storage medium storing one or more programs, the one or more programs comprising instructions, which when executed by one or more processors of a controller of an ion implantation system, cause the controller to:
control an ion implanter of the ion implantation system to implant ions into a wafer while maintaining the wafer at a first predetermined temperature within a processing chamber of the ion implanter;
control a processing station of the ion implantation system to heat or cool the wafer at the processing station;
after heating or cooling the wafer:
control a laser source to direct a laser beam to a predefined location on an edge extending between a top surface of the wafer and a bottom surface of the wafer, wherein a size of a spot of the laser beam is smaller than a thickness of the wafer and wherein the thickness of the wafer is equivalent to a length of the edge;
obtain, from a monochromator, data representing detected fluorescent light emitted by the wafer in response to absorbing laser energy of the laser beam;
determine an intensity profile of the detected fluorescent light based on the data representing the detected fluorescent light;
determine a current temperature of the wafer based on one or more characteristics determined from the intensity profile; and

in accordance with the determined current temperature of the wafer satisfying a predetermined condition:
control the processing station to forgo continuing to heat or cool the wafer at the processing station; and
control the robotic arm to remove the wafer from the processing station.