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The Charge Distribution, Seebeck Coefficient, and Carrier Concentration of CuCr0.99Ln0.01S2 (Ln = Dy–Lu) Full article

Journal Materials
ISSN: 1996-1944
Output data Year: 2023, Volume: 16, Number: 6, Pages: 2431 Pages count : 1 DOI: 10.3390/ma16062431
Tags layered copper–chromium disulfide; XPS; lanthanides; Seebeck coefficient; Hall voltage; thermoelectricity
Authors Korotaev Evgeniy V. 1 , Syrokvashin Mikhail M. 1 , Filatova Irina Yu. 1 , Sotnikov A.V. 1 , Kalinkin Alexandr V. 2
Affiliations
1 Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, 630090 Novosibirsk, Russia
2 Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, 630090 Novosibirsk, Russia

Funding (2)

1 Ministry of Science and Higher Education of the Russian Federation
2 Russian Science Foundation 19-73-10073

Abstract: The atom oxidation states were determined using the binding energies of the core S2p-, Cu2p-, Cr2p-, and Ln3d-levels in CuCr0.99Ln0.01S2 (Ln = Dy–Lu) solid solutions. The charge distribution on the matrix elements (Cu, Cr, and S) remained unaffected after cationic substitution. The sulfur atoms were found to be in the S2− oxidation state, the copper–Cu+, and the chromium–Cr3+. The cationic substitution of the initial CuCrS2-matrix occurred via the isovalent mechanism. The obtained results were compared with the electrophysical properties for CuCr0.99Ln0.01S2. The measured carrier concentration was from 1017 to 1018 cm−3. The largest Seebeck coefficient value of 157 µV/K was measured for CuCr0.99Yb0.01S2 at 500 K. The cationic substitution with lanthanides allowed one to enhance the Seebeck coefficient of the initial CuCrS2-matrix.
Cite: Korotaev E.V. , Syrokvashin M.M. , Filatova I.Y. , Sotnikov A.V. , Kalinkin A.V.
The Charge Distribution, Seebeck Coefficient, and Carrier Concentration of CuCr0.99Ln0.01S2 (Ln = Dy–Lu)
Materials. 2023. V.16. N6. P.2431. DOI: 10.3390/ma16062431 WOS Scopus РИНЦ OpenAlex
Dates:
Submitted: Feb 22, 2023
Accepted: Mar 17, 2023
Published print: Mar 18, 2023
Published online: Mar 18, 2023
Identifiers:
Web of science: WOS:000958123400001
Scopus: 2-s2.0-85151551671
Elibrary: 54041609
OpenAlex: W4327972572
Citing:
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OpenAlex 5
Web of science 5
Scopus 5
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