Uniformly-doped silicon thin films were fabricated by ion beam sputter deposition. The thin films had four levels of boron dopant concentration ranging between 1 x 1018 and 1 x 1020 atoms cm-3. Concentrations of the boron dopants were determined by isotope dilution inductively coupled plasma mass spectrometry to provide certified reference data for quantitative surface analysis by secondary ion mass spectrometry (SIMS). The boron-doped thin films were dissolved in 0.3 M LiOH solution spiked with appropriate amounts of 10B. The uncertainty of the determined boron concentrations, estimated by following the EURACHEM Guide, was less than 4%, and the detection limit of the method was 2.1 x 1017 atoms cm-3. The determined boron concentrations were compared with those obtained by SIMS analysis calibrated with a 10B ion implanted reference material (NIST SRM 2137). The two results showed a good agreement within the stated uncertainty of 5% for the SRM.
All Science Journal Classification (ASJC) codes
- Analytical Chemistry
- Environmental Chemistry