High-performance thermoelectric SnSe: aqueous synthesis, innovations, and challenges

Shi, Xiao-Lei ORCID: https://orcid.org/0000-0003-0905-2547 and Tao, Xinyong and Zou, Jin and Chen, Zhi-Gang ORCID: https://orcid.org/0000-0002-9309-7993 (2020) High-performance thermoelectric SnSe: aqueous synthesis, innovations, and challenges. Advanced Science, 7 (7):1902923. pp. 1-51.

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Abstract

Tin selenide (SnSe) is one of the most promising candidates to realize environmentally-friendly, cost-effectiveness, and high-performance thermoelectrics, derived from its outstanding electrical transport properties by appropriate band-gaps and intrinsic low lattice thermal conductivity from its anharmonic layered structure. Advanced aqueous synthesis possesses various unique advantages including convenient morphology control, exceptional high doping solubility, and distinctive vacancy engineering. Considering that there is urgent demand for a comprehensive survey on aqueous synthesis technique applied to thermoelectric SnSe, in this review, we provide a thorough overview of aqueous synthesis, characterizations, and thermoelectric performance in SnSe. We provide new insights into the aqueous synthesis-based strategies for improving the performance, including vacancy synergy, crystallization design, solubility breakthrough, and local lattice imperfection engineering, and try to build the inherent links between the aqueous synthesis-induced structural characteristics and the excellent thermoelectric performance. Besides, the significant advantages and potentials of aqueous synthesis route on fabricating SnSe-based two-dimensional thermoelectric generators, including nanorods, nanobelts, and nanosheets, are also discussed. In the end, we point out the controversy, strategy, and outlook toward future enhancement of SnSe-based thermoelectric materials. This review will guide the design of thermoelectric SnSe with high performance, and provide new perspectives as reference for other thermoelectric systems.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Faculty/School / Institute/Centre: Current - Institute for Advanced Engineering and Space Sciences - Centre for Future Materials (1 Jan 2017 -)
Faculty/School / Institute/Centre: Current - Institute for Advanced Engineering and Space Sciences - Centre for Future Materials (1 Jan 2017 -)
Date Deposited: 22 Jun 2020 01:22
Last Modified: 27 Jul 2020 00:27
Uncontrolled Keywords: aqueous solution; characterization; performance; SnSe; thermoelectrics
Fields of Research (2008): 09 Engineering > 0912 Materials Engineering > 091205 Functional Materials
Identification Number or DOI: https://doi.org/10.1002/advs.201902923
URI: http://eprints.usq.edu.au/id/eprint/37950

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