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Description:

As a crucial parameter in the determination of thermal conductivity, the heat capacity of Cu2+xZn1-xSnS4 (CZTS) has been investigated and analyzed in detail from 2 to 773 K. The effects of the Cu-Zn stoichiometric ratio and phase transition have been quantified and correlated with entropy variation. We confirm that the compounds follow the Dulong-Petit approximation above the Debye temperature θD and solve literature discrepancies on CZTS. The in-depth low-temperature heat capacity analysis revealed an approximate image of the energy dependance of the phonon density of state in kesterite which agrees with results of first-principles calculations.

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• In Copyright
  

Keyword: kesterite

Date published: 2024-10-08

Publisher: Royal Society of Chemistry (RSC)

Journal:

• Journal of Materials Chemistry C (ISSN: 20507526) vol. 12 issue. 40 p. 16309-16313

Funding:

• JST-Mirai Program JPMJMI19A1
• National Institute for Materials Science

Manuscript type: Author's version (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.5002

First published URL: https://doi.org/10.1039/d4tc02105c

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Updated at: 2025-10-21 15:51:25 +0900

Published on MDR: 2025-10-21 15:43:00 +0900