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説明:

In this work, Bi1−xPbxCu1−x SeO (x = 0, 0.02, 0.06, and 0.08) compounds were synthesized by a solid state reaction followed by spark plasma sintering. The effect of simultaneous Bi to Pb substitution and Cu vacancy introduction on thermoelectric properties was investigated systematically. The power factor was significantly enhanced, contributing to the increase in the zT value. As a result, the zTmax of 0.75 at 773 K was obtained for the Bi0.94Pb0.06Cu0.94SeO sample. To reveal the factors constraining the zTmax of Bi1−xPbxCuSeO-based oxyselenides, a further careful analysis of literature data was performed. We highlighted that for Pb-doped oxyselenides, the power factor is almost independent of the synthesis technique, while the lattice thermal conductivity is the main property determining zTmax and is highly affected by the synthesis method.

権利情報:

• In Copyright
  

キーワード: thermoelectric

刊行年月日: 2024-04-22

出版者: Royal Society of Chemistry (RSC)

掲載誌:

• Physical Chemistry Chemical Physics (ISSN: 14639084) vol. 26 issue. 17 p. 13006-13011

研究助成金:

• Japan Science and Technology Agency JPMJMI19A1
• Russian Science Foundation 19-79-10282

原稿種別: 査読前原稿 (Author's original)

MDR DOI: https://doi.org/10.48505/nims.4811

公開URL: https://doi.org/10.1039/d4cp00308j

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更新時刻: 2024-10-09 08:30:23 +0900

MDRでの公開時刻: 2024-10-09 08:30:24 +0900