Case Study
Thin-Film Interface Defect Characterization
This is a representative example pending publication of a real, client-approved case study.
Challenge
A materials development team needed to determine whether localized defects in a thin-film stack were related to film growth, interfacial reaction, or particulate inclusion. The features were too small for optical review and required cross-sectional analysis with nanoscale structural and elemental information.
Approach
A site-specific cross section was prepared for transmission electron microscopy. High-resolution TEM imaging was paired with STEM-EDS mapping to compare the defect region with nearby unaffected interfaces and to assess whether elemental segregation or an inclusion was present.
Result
The work provided qualitative evidence for the defect morphology and associated elemental contrast, enabling the team to focus development efforts on interface control and upstream deposition conditions. The results also helped define follow-up experiments for process optimization.