Time-Resolved Grazing Incidence X-Ray Absorption Spectroscopy for the In Situ Investigation of the Initial Stages of Sputter-Deposited Copper Thin Films
(2022) In Physica Status Solidi (A) Applications and Materials Science 219(9).- Abstract
The sputter deposition and the growth of thin copper films on float glass substrates are in situ studied using grazing incidence, reflection mode X-ray absorption fine structure spectroscopy with subsecond time resolution. The experimental data are compared with model calculations, assuming the presence of crystalline, face-centered cubic metallic Cu nanostructures. From a detailed analysis of the measured spectra, the film thickness as well as the surface roughness is determined, leading to a detailed understanding of the films growth as a function of the sputter deposition time. In particular, different stages of film growth can clearly be distinguished from the fits of the experimental data. The results suggest the formation of... (More)
The sputter deposition and the growth of thin copper films on float glass substrates are in situ studied using grazing incidence, reflection mode X-ray absorption fine structure spectroscopy with subsecond time resolution. The experimental data are compared with model calculations, assuming the presence of crystalline, face-centered cubic metallic Cu nanostructures. From a detailed analysis of the measured spectra, the film thickness as well as the surface roughness is determined, leading to a detailed understanding of the films growth as a function of the sputter deposition time. In particular, different stages of film growth can clearly be distinguished from the fits of the experimental data. The results suggest the formation of isolated, approximately nm-sized copper clusters in the initial phase of the film deposition for the first few seconds, a coalescence phase with a nominal thickness of ≈1.5−2.8 nm, constant roughness of about 1.4 nm for the subsequent ≈5 s, and finally 3D growth of the Cu crystallites in the film for later stages of film growth. Further prospects of the methodology are given.
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- author
- Lützenkirchen-Hecht, Dirk ; Stötzel, Jan ; Just, Justus LU ; Müller, Oliver ; Bornmann, Benjamin and Frahm, Ronald
- organization
- publishing date
- 2022
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- grazing incidence EXAFS, roughness evolution, sputter deposition, thin-film growth, time resolution
- in
- Physica Status Solidi (A) Applications and Materials Science
- volume
- 219
- issue
- 9
- article number
- 2100514
- publisher
- Wiley-Blackwell
- external identifiers
-
- scopus:85116930533
- ISSN
- 1862-6300
- DOI
- 10.1002/pssa.202100514
- language
- English
- LU publication?
- yes
- additional info
- Publisher Copyright: © 2021 The Authors. physica status solidi (a) applications and materials science published by Wiley-VCH GmbH
- id
- 7c204511-16dd-4407-97d0-e7775b8eb46d
- date added to LUP
- 2021-10-27 13:23:47
- date last changed
- 2022-10-31 14:59:33
@article{7c204511-16dd-4407-97d0-e7775b8eb46d,
abstract = {{<p>The sputter deposition and the growth of thin copper films on float glass substrates are in situ studied using grazing incidence, reflection mode X-ray absorption fine structure spectroscopy with subsecond time resolution. The experimental data are compared with model calculations, assuming the presence of crystalline, face-centered cubic metallic Cu nanostructures. From a detailed analysis of the measured spectra, the film thickness as well as the surface roughness is determined, leading to a detailed understanding of the films growth as a function of the sputter deposition time. In particular, different stages of film growth can clearly be distinguished from the fits of the experimental data. The results suggest the formation of isolated, approximately nm-sized copper clusters in the initial phase of the film deposition for the first few seconds, a coalescence phase with a nominal thickness of ≈1.5−2.8 nm, constant roughness of about 1.4 nm for the subsequent ≈5 s, and finally 3D growth of the Cu crystallites in the film for later stages of film growth. Further prospects of the methodology are given.</p>}},
author = {{Lützenkirchen-Hecht, Dirk and Stötzel, Jan and Just, Justus and Müller, Oliver and Bornmann, Benjamin and Frahm, Ronald}},
issn = {{1862-6300}},
keywords = {{grazing incidence EXAFS; roughness evolution; sputter deposition; thin-film growth; time resolution}},
language = {{eng}},
number = {{9}},
publisher = {{Wiley-Blackwell}},
series = {{Physica Status Solidi (A) Applications and Materials Science}},
title = {{Time-Resolved Grazing Incidence X-Ray Absorption Spectroscopy for the In Situ Investigation of the Initial Stages of Sputter-Deposited Copper Thin Films}},
url = {{http://dx.doi.org/10.1002/pssa.202100514}},
doi = {{10.1002/pssa.202100514}},
volume = {{219}},
year = {{2022}},
}