Abstract
Historically, dynamic secondary ion mass spectroscopy (D-SIMS) has been used to quantitatively monitor the depth distribution of species present in low concentrations in samples/devices. We are not aware of any manuscript that describes the use of time of flight–secondary ion mass spectroscopy (ToF-SIMS) to perform quantitative analysis of aluminum present at low concentrations in silicon carbide (SiC) wafer substrates. In this paper, we will show that ToF-SIMS is able to replicate D-SIMS analysis. However, analysis at the lowest concentrations requires the collection of more spectral images at each depth. Tables of sputtering rates and sputtering yields, in addition to relative sensitivity factors are provided. We also highlight the benefits of ToF-SIMS analysis.
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