Site-specific Low Angle Plasma FIB Milling for Cross-sectional Electrical Characterization

Thursday, November 14, 2019: 9:15 AM
F 150/151 (Oregon Convention Center)
Dr. Chuan Zhang , NVIDIA Corporation, Santa Clara, CA
Dr. Yuanjing (Jane) Li , NVIDIA Corporation, Santa Clara, CA
Mr. John Aguada , NVIDIA Corporation, Santa Clara, CA
Mr. Howard Lee Marks , NVIDIA Corporation, Santa Clara, CA

Summary:

This paper introduces a novel sample preparation method using plasma focused ion-beam (pFIB) milling at low incident angle. Efficient and high precision preparation of site-specific cross-sectional samples with minimal alternation of device parameters can be achieved with this method. It offers the capability of acquiring a range of electrical characteristics signals from the specific site on the cross-section of the device, including imaging of junctions, Fins at transistor level and electrical probing of interconnect metal traces.