Complex profile metrology via physical symmetry enhanced small angle x-ray scattering
Dawei Wang,
Hongtao Liang,
Hairui Yang
et al.
Abstract:Small angle x-ray scattering (SAXS) stands out as a promising solution in semiconductor metrology. The critical issue of SAXS metrology is to solve the SAXS inverse problem. With the increasing complexity of semiconductor devices, traditional strategies will face problems such as long iteration time and multiple solutions. To address these challenges, we develop a physical symmetry enhanced method to speed up the solution of the SAXS inverse problem for complex nanostructures. We incorporate the physical symme… Show more
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