Invention Grant
- Patent Title: Systems and approaches for semiconductor metrology and surface analysis using Secondary Ion Mass Spectrometry
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Application No.: US17164499Application Date: 2021-02-01
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Publication No.: US11430647B2Publication Date: 2022-08-30
- Inventor: David A. Reed , Bruno W. Schueler , Bruce H. Newcome , Rodney Smedt , Chris Bevis
- Applicant: NOVA MEASURING INSTRUMENTS INC.
- Applicant Address: US CA Santa Clara
- Assignee: NOVA MEASURING INSTRUMENTS INC.
- Current Assignee: NOVA MEASURING INSTRUMENTS INC.
- Current Assignee Address: US CA Santa Clara
- Agency: Reches Patents
- Main IPC: H01J49/14
- IPC: H01J49/14 ; H01L21/66 ; H01J49/12 ; G01N23/2258 ; G01N23/22 ; G01Q10/04 ; H01J49/26

Abstract:
Systems and approaches for semiconductor metrology and surface analysis using Secondary Ion Mass Spectrometry (SIMS) are disclosed. In an example, a secondary ion mass spectrometry (SIMS) system includes a sample stage. A primary ion beam is directed to the sample stage. An extraction lens is directed at the sample stage. The extraction lens is configured to provide a low extraction field for secondary ions emitted from a sample on the sample stage. A magnetic sector spectrograph is coupled to the extraction lens along an optical path of the SIMS system. The magnetic sector spectrograph includes an electrostatic analyzer (ESA) coupled to a magnetic sector analyzer (MSA).
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