Three-Dimensional Composition Analysis of SnAg Solder Bumps Using Ultraviolet Femtosecond Laser Ablation Ionization Mass Spectrometry

Cedeño López, A.; Grimaudo, V.; Riedo, A.; Tulej, M.; Wiesendanger, R.; Lukmanov, R.; Moreno-García, P.; Lörtscher, E.; Wurz, P.; Broekmann, P. (2020). Three-Dimensional Composition Analysis of SnAg Solder Bumps Using Ultraviolet Femtosecond Laser Ablation Ionization Mass Spectrometry. Analytical chemistry, 92(1), pp. 1355-1362. American Chemical Society 10.1021/acs.analchem.9b04530

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The application of a novel UV fs Laser Ablation Ionization Mass Spectrometry approach for chemical depth profiling of low-melting point, high surface roughness SnAg solder bump features is presented. The obtained submicrometer resolved three-dimensional compositional data reveal unprecedented information on the distribution of individual elements inside the solder bump matrix. Moreover, the determination of matrix-matched relative sensitivity coefficients allows the first report on quantitative assessment of the SnAg alloy composition. These results significantly contribute to an in-depth understanding of the SnAg plating process. This experimental procedure may find application in future additive performance screening.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Departement of Chemistry and Biochemistry
08 Faculty of Science > Physics Institute > Space Research and Planetary Sciences
08 Faculty of Science > Physics Institute

UniBE Contributor:

Cedeño López, Alena; Riedo, Valentine; Tulej, Marek; Wiesendanger, Reto; Lukmanov, Rustam; Moreno, Pavel; Wurz, Peter and Broekmann, Peter

Subjects:

500 Science > 570 Life sciences; biology
500 Science > 540 Chemistry
500 Science > 520 Astronomy
500 Science > 530 Physics
600 Technology > 620 Engineering

ISSN:

0003-2700

Publisher:

American Chemical Society

Language:

English

Submitter:

Dora Ursula Zimmerer

Date Deposited:

18 Feb 2020 11:47

Last Modified:

18 Feb 2020 11:47

Publisher DOI:

10.1021/acs.analchem.9b04530

BORIS DOI:

10.7892/boris.140098

URI:

https://boris.unibe.ch/id/eprint/140098

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