Study on the Thermoelectric Properties of n-Type Polycrystalline SnSe by CeCl₃ Doping

Hongxia Liu; Shun Zhang; Yan Zhang; Shuotong Zong; Wang Li; Can Zhu; Feng Luo; Jian Wang; Zhigang Sun

doi:10.1021/acsaem.2c02761

journal article·2022-12-26

Study on the Thermoelectric Properties of n-Type Polycrystalline SnSe by CeCl₃ Doping

Hongxia Liu, Shun Zhang, Yan Zhang, Shuotong Zong, Wang Li, Can Zhu, Feng Luo, Jian Wang, Zhigang Sun

ACS Applied Energy Materials· Volume 5· Issue 12

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Source abstract

Abstract

SnSe is a promising medium-temperature thermoelectric material due to its extremely low thermal conductivity and tunable electronic transport properties. In this work, n-type SnSe0.95 polycrystals doped with CeCl3 are synthesized by a melting method combined with a spark plasma sintering (SPS) process. The samples have highly textured structures and anisotropic thermoelectric properties. CeCl3 doping has a favorable effect on the electronic transport above 473 K, which may benefit from the excitation of the introduced impurity energy level. Moreover, the thermal conductivity is significantly reduced due to the phonon scattering by point defects. Finally, a peak ZT value of 1.17 is obtained at 773 K in SnSe0.95–0.5 mol % CeCl3, which paves the way for improving the thermoelectric performance of n-type SnSe via rare-earth halide doping.

Source: openalex_inverted_index · Quality: baseline

Research context

Ceramics & glasses

OpenAlex topics: Advanced Thermoelectric Materials and Devices · Perovskite Materials and Applications · Chalcogenide Semiconductor Thin Films

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

School of Materials Science and Engineering, Taiyuan University of Science and Technology, Taiyuan, Shanxi030024, China

Laboratory of Magnetic and Electric Functional Materials and the Applications, The Key Laboratory of Shanxi Province, Taiyuan, Shanxi030024, China

State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, Hubei430070, China

Funding

Taiyuan University of Technology · Ministry of Science and Technology of the People's Republic of China · State Key Laboratory of Advanced Technology for Materials Synthesis and Processing · National Natural Science Foundation of China · Scientific and Technological Innovation Programs of Higher Education Institutions in Shanxi · Fundamental Research Program of Shanxi Province · Funding for Outstanding Doctoral Research in Jin

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