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De Neve K, Strijckmans K, Dams R. Feasibility study on the characterization of thin layers by charged-particle activation analysis. Anal Chem. 2000;72(13):2814-20doi: 10.1021/ac000187c.
De Neve K, Strijckmans, K., & Dams, R. (2000). Feasibility study on the characterization of thin layers by charged-particle activation analysis. Analytical chemistry, 72(13), 2814-20. https://doi.org/10.1021/ac000187c
De Neve K, et al. "Feasibility study on the characterization of thin layers by charged-particle activation analysis." Analytical chemistry vol. 72,13 (2000): 2814-20. doi: https://doi.org/10.1021/ac000187c
De Neve K, Strijckmans K, Dams R. Feasibility study on the characterization of thin layers by charged-particle activation analysis. Anal Chem. 2000 Jul 01;72(13):2814-20. doi: 10.1021/ac000187c. PMID: 10905312.
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Anal Chem. 2000 Jul 01;72(13):2814-20. doi: 10.1021/ac000187c.

Feasibility study on the characterization of thin layers by charged-particle activation analysis.

Analytical chemistry

De Neve K, Strijckmans, Dams

Affiliations

  1. Laboratory of Analytical Chemistry, Institute for Nuclear Sciences, Ghent University, Belgium.

PMID: 10905312 DOI: 10.1021/ac000187c

Abstract

The purpose of this feasibility study was to investigate the possibilities and limitations of Charged-Particle Activation Analysis (CPAA) as a thin layer characterization method, i.e., the determination of the mass thickness or the composition of a thin layer. Therefore industrially important layers of sputtered Al, AlOx, TiQx (all three from the packaging industry), YBa2Cu3O6+delta, and Y2O3-stabilized ZrO2 (both superconducting industry) on different substrates were analyzed, and thereby the accuracy, the detection limits, and the precision of the method were studied. To test the accuracy, the same materials were also analyzed with neutron activation analysis (NAA) and inductively coupled plasma mass spectrometry (ICPMS). The results of CPAA compared with the results of NAA and ICPMS showed no significant difference at the 95% confidence level. The detection limits expressed as mass thickness were about 10-2 microg cm-2 or expressed as thickness 0.04 nm for a monatomic layer of Al. The experiments showed that the precision of the method depends only on the counting statistics. Generally we can conclude that CPAA is an absolute method for the characterization of "thin" layers, with respect to composition and mass thickness determinations.

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