TY - JOUR
T1 - Assessing the chemical state of chemically deposited copper sulfide
T2 - A quantitative analysis of the X-ray photoelectron spectra of the amorphous-to-covellite transition phases
AU - Cabrera-German, D.
AU - García-Valenzuela, J. A.
AU - Martínez-Gil, M.
AU - Suárez-Campos, G.
AU - Montiel-González, Z.
AU - Sotelo-Lerma, M.
AU - Cota-Leal, M.
N1 - Publisher Copyright:
© 2019
PY - 2019/7/1
Y1 - 2019/7/1
N2 -
Precise determination of the chemical composition and structure of copper sulfides is important to understand the different phase properties. To contribute in this matter, a set of peak-fitting parameters that allows for an accurate reproduction and subsequent quantitative analysis of the X-ray photoemission spectra of copper sulfides films is presented. The results show that the as-deposited brown‑gold film, obtained by chemical solution deposition, is composed of Cu(I) and that it has an amorphous nature with a chemical composition of CuS
1.67±0.15
, which is related to the composition of a pyrite-type structure. After annealing in a nitrogen-rich atmosphere, the film turned blue-green and shows a mixed Cu(I)/Cu(II) state with photoemission signals characteristic of covellite where the chemical composition was determined to be CuS
1.00±0.20
. This chemical composition, in addition to the X-ray diffraction results, supports that the as-deposited amorphous copper sulfide film, when annealed, certainly turns into covellite. All the results suggest that the proposed quantitation method is suitable for quantitative analysis of copper sulfides, even when presenting an oxide overlayer.
AB -
Precise determination of the chemical composition and structure of copper sulfides is important to understand the different phase properties. To contribute in this matter, a set of peak-fitting parameters that allows for an accurate reproduction and subsequent quantitative analysis of the X-ray photoemission spectra of copper sulfides films is presented. The results show that the as-deposited brown‑gold film, obtained by chemical solution deposition, is composed of Cu(I) and that it has an amorphous nature with a chemical composition of CuS
1.67±0.15
, which is related to the composition of a pyrite-type structure. After annealing in a nitrogen-rich atmosphere, the film turned blue-green and shows a mixed Cu(I)/Cu(II) state with photoemission signals characteristic of covellite where the chemical composition was determined to be CuS
1.00±0.20
. This chemical composition, in addition to the X-ray diffraction results, supports that the as-deposited amorphous copper sulfide film, when annealed, certainly turns into covellite. All the results suggest that the proposed quantitation method is suitable for quantitative analysis of copper sulfides, even when presenting an oxide overlayer.
KW - Active background approach
KW - Chemical bath deposition
KW - Copper sulfide
KW - Peak-fitting
KW - Quantitative XPS
KW - X-ray photoelectron spectroscopy
UR - http://www.scopus.com/inward/record.url?scp=85062962761&partnerID=8YFLogxK
U2 - 10.1016/j.apsusc.2019.03.054
DO - 10.1016/j.apsusc.2019.03.054
M3 - Artículo
AN - SCOPUS:85062962761
SN - 0169-4332
VL - 481
SP - 281
EP - 295
JO - Applied Surface Science
JF - Applied Surface Science
ER -