Abstract
Secondary ion mass spectroscopy (SIMS) and Auger electron spectroscopy (AES) depth profiles of a double layer structure of AlAs in GaAs were compared to show the application of mixing-roughness-information (MRI) depth model to quantitative reconstruction of in-depth distribution of composition. Identical sputtering conditions were used to depth profile GaAs\AlAs reference sample consisting of two layers of AlAs separated by 44 monolayer of GaAs matrix. A marked nonlinearity between concentration and intensity was noticed on quantification using dimer (Al2+) and trimer (Al3+) ions with the main effect caused by simple mass action law probability of cluster ion formation.
| Original language | English |
|---|---|
| Pages (from-to) | 1111-1115 |
| Number of pages | 5 |
| Journal | Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films |
| Volume | 19 |
| Issue number | 4 |
| DOIs | |
| State | Published - Jul 2001 |