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Ag2Se-based materials with promising room-temperature thermoelectric performance and excellent mechanical properties have been known for decades. However, the fabrication of the Ag2Se-based devices toward the practical application of electronic cooling has seldom been reported. Herein, the synthesis of Ag2Se material with a diameter of 25.4 mm was achieved. The homogeneous elemental distribution and similar thermoelectric properties demonstrate the high uniformity of the Ag2Se sample. In addition, ~90 Ag/Ag2Se/Ag legs can be obtained from a single Ag2Se plate, and the interfacial contact resistivity of the Ag/Ag2Se varies from 0.8 to 3.1 μΩ cm2. Four thermoelectric devices based on n-type Ag2Se and p-type (Bi, Sb)2Te3 have been fabricated, and they achieve a cooling temperature difference of ~ 56 K at the hot-side temperature of 300 K, demonstrating the great potential of Ag2Se material for cooling applications.

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• Creative Commons BY Attribution 4.0 International
  

Keyword: Thermoelectric cooling, Ag2Se, compositional homogeneity

Date published: 2026-03-12

Publisher: Taylor & Francis

Journal:

• Science and Technology of Advanced Materials (ISSN: 14686996) vol. 27 2641882

Funding:

Manuscript type: Author's version (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.6231

First published URL: https://doi.org/10.1080/14686996.2026.2641882

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Updated at: 2026-03-23 15:18:46 +0900

Published on MDR: 2026-03-23 16:22:18 +0900