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Retrospective sputter depth profiling using 3D mass spectral imaging.

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Summary
This summary is machine-generated.

Time-of-flight secondary ion mass spectrometry (ToF-SIMS) imaging with C60 cluster ion beams allows retrospective depth profiling of molecular multilayer stacks. This method helps assess depth resolution and its degradation with increasing depth.

Keywords:
3D analysisdepth resolutionmolecular depth profilingorganic multilayer analysis

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Area of Science:

  • Materials Science
  • Surface Analysis
  • Spectroscopy

Background:

  • Molecular multilayer stacks require precise depth profiling for characterization.
  • Assessing depth resolution is crucial for accurate interface analysis.

Purpose of the Study:

  • To analyze molecular multilayer stacks using ToF-SIMS imaging and C60 cluster ion sputtering.
  • To develop methods for retrospective depth profiling and depth resolution assessment.

Main Methods:

  • Time-of-flight secondary ion mass spectrometry (ToF-SIMS) imaging.
  • Focused C60 cluster ion beam for sputter erosion.
  • Retrospective analysis of depth profiles from selected lateral areas.

Main Results:

  • Depth profiles can be extracted from any lateral region of interest after analysis.
  • The influence of analysis area selection on depth resolution can be evaluated.
  • The intrinsic depth resolution of the method can be determined by analyzing resolution degradation.

Conclusions:

  • ToF-SIMS imaging with C60 sputtering enables flexible retrospective depth profiling.
  • This approach allows for detailed investigation of depth resolution limitations.
  • The method provides a pathway to optimize depth profiling in multilayer analysis.