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http://hdl.handle.net/10397/105379
Title: | Enhancement of thermoelectric performance for CuCl doped p-type Cu2Sn0.7Co0.3S3 | Authors: | Shi, DL Lam, KH |
Issue Date: | Mar-2023 | Source: | Materials, Mar. 2023, v. 16, no. 6, 2395 | Abstract: | Cu2SnS3 (CSS) has gained great attraction due to its constitutive earth-abundant elements and intrinsic low lattice thermal conductivity, (Formula presented.), potentially providing high quality factor, B, and high zT value. However, the lack of band convergence is the bottleneck to enhancing the thermoelectric performance of Cu2SnS3 when performing the band engineering. To study the doping effect on the band structure and the thermoelectric performance, the composite Cu2Sn0.7Co0.3S3-xCuCl (x = 0, 0.1, 0.2, 0.3) (CSCS-xCuCl) has been investigated for the first time. The samples showed excellent data repeatability at high temperatures of up to 700 K. It was found that CuCl could compensate the Cu loss, enhance the phonon scattering and minimize the adverse effect on the power factor, PF. The ultralow lattice thermal conductivity could reach 0.38 W m−1 K−1 for the nominal composition of CSCS-0.3CuCl at 700 K. A peak zT of 0.56 (evaluated with no cold finger effect) was realized at 700 K when x = 0.3, which is almost double the performance of pristine samples. | Keywords: | Cu2SnS3 Energy conversion Repeatability Thermoelectric |
Publisher: | Molecular Diversity Preservation International (MDPI) | Journal: | Materials | EISSN: | 1996-1944 | DOI: | 10.3390/ma16062395 | Rights: | © 2023 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). The following publication Shi D-L, Lam K-H. Enhancement of Thermoelectric Performance for CuCl Doped P-Type Cu2Sn0.7Co0.3S3. Materials. 2023; 16(6):2395 is available at https://doi.org/10.3390/ma16062395. |
Appears in Collections: | Journal/Magazine Article |
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