Enhanced thermoelectric performance in p-type polycrystalline SnSe by Cu doping

Li, Jiaran; Xu, Jingtao; Wang, Hongxiang; Liu, Guoqiang; Tan, Xiaojian; Shao, Hezhu; Hu, Haoyang; Jiang, Jun

doi:10.1007/s10854-018-9996-x

Cited by 20 publications

(13 citation statements)

References 32 publications

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“…Among the state‐of‐the‐art thermoelectric materials, tin selenide (SnSe) is one of the most promising candidates to apply to thermoelectric devices due to its environmentally friendly feature, high cost‐effectiveness, and outstanding thermoelectric performance derived from its appropriate bandgap of ≈0.9 eV and intrinsic low κ l 9,10 . Figure a shows the development timeline for all SnSe‐based bulk thermoelectric materials,11–124 from which a record high ZT of ≈2.8 at 773 K was found in the n‐type SnSe single crystal,11 derived from its ultralow κ l of ≈0.18 W m −1 K −1 and high S 2 σ of ≈9.0 µW cm −1 K −2 at this temperature 125. Such a high ZT is also very competitive to other state‐of‐the‐art thermoelectric systems which possess ZTs > 2, such as PbTe,126–134 GeTe,135–147 Cu 2 Se/Cu 2 S,148–157 and AgSbTe 2 158.…”

Section: Introductionmentioning

confidence: 97%

“…A summary of ZTs for SnSe‐based thermoelectric materials. a) The timeline for state‐of‐the‐art SnSe bulks thermoelectric materials,11–124,169–182 the performance achieved by solution route are circled by yellow. b) Temperature‐dependent ZT and c) corresponding peak and average ZT values for polycrystalline SnSe through different fabrication techniques 13,16,22,46,58,62,95,99,101.…”

Section: Introductionmentioning

confidence: 99%

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High‐Performance Thermoelectric SnSe: Aqueous Synthesis, Innovations, and Challenges

2020

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Tin selenide (SnSe) is one of the most promising candidates to realize environmentally friendly, cost‐effective, and high‐performance thermoelectrics, derived from its outstanding electrical transport properties by appropriate bandgaps 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 an urgent demand for a comprehensive survey on the aqueous synthesis technique applied to thermoelectric SnSe, herein, a thorough overview of aqueous synthesis, characterization, and thermoelectric performance in SnSe is provided. New insights into the aqueous synthesis‐based strategies for improving the performance are provided, including vacancy synergy, crystallization design, solubility breakthrough, and local lattice imperfection engineering, and an attempt to build the inherent links between the aqueous synthesis‐induced structural characteristics and the excellent thermoelectric performance is presented. Furthermore, the significant advantages and potentials of an aqueous synthesis route for fabricating SnSe‐based 2D thermoelectric generators, including nanorods, nanobelts, and nanosheets, are also discussed. Finally, the controversy, strategy, and outlook toward future enhancement of SnSe‐based thermoelectric materials are also provided. This Review guides the design of thermoelectric SnSe with high performance and provides new perspectives as a reference for other thermoelectric systems.

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Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

High‐Performance Thermoelectric SnSe: Aqueous Synthesis, Innovations, and Challenges

2020

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“…Therefore, there have been extensive follow-up investigations on SnSe and related materials aiming to further improve their TE performances through various approaches. [7][8][9][10][11][12][13][14][15][16][17] Among them, the most commonly used one is the chemical substitutions for Sn/Se or introducing vacancies.…”

Section: Introductionmentioning

confidence: 99%

Pressure-induced enhancement of thermoelectric power factor in pristine and hole-doped SnSe crystals

Qin

Liu

et al. 2019

RSC Adv.

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“…The Cu‐doped polycrystalline p ‐type Sn 1− x Cu x Se material was prepared by BM and HP. [ 387 ] In this case, polycrystalline Cu‐doped SnSe was prepared by traditional melting, ball‐milling, and hot‐pressing. Due to carrier optimization via Cu doping, a peak zT of 0.66 was observed in Sn 0.98 Cu 0.02 Se at 813 K. In LaCl 3 doped polycrystalline SnSe synthesized by combining MA and SPS, [ 388 ] the σ is enhanced after doping due to increased n( μ ) and increased S over 300 µV K −1 , resulting in a high PF at 750 K and a lower κ (< 1.0 W m −1 K −1 ) over the entire temperature range measured.…”

Section: Traditional Versus Green Sustainable Te Materials Synthesis ...mentioning

confidence: 99%

Energy‐Saving Pathways for Thermoelectric Nanomaterial Synthesis: Hydrothermal/Solvothermal, Microwave‐Assisted, Solution‐Based, and Powder Processing

2022

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The pillars of Green Chemistry necessitate the development of new chemical methodologies and processes that can benefit chemical synthesis in terms of energy efficiency, conservation of resources, product selectivity, operational simplicity and, crucially, health, safety, and environmental impact. Implementation of green principles whenever possible can spur the growth of benign scientific technologies by considering environmental, economical, and societal sustainability in parallel. These principles seem especially important in the context of the manufacture of materials for sustainable energy and environmental applications. In this review, the production of energy conversion materials is taken as an exemplar, by examining the recent growth in the energy-efficient synthesis of thermoelectric nanomaterials for use in devices for thermal energy harvesting. Specifically, "soft chemistry" techniques such as solution-based, solvothermal, microwave-assisted, and mechanochemical (ball-milling) methods as viable and sustainable alternatives to processes performed at high temperature and/or pressure are focused. How some of these new approaches are also considered to thermoelectric materials fabrication can influence the properties and performance of the nanomaterials so-produced and the prospects of developing such techniques further.

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Enhanced thermoelectric performance in p-type polycrystalline SnSe by Cu doping

Cited by 20 publications

References 32 publications

High‐Performance Thermoelectric SnSe: Aqueous Synthesis, Innovations, and Challenges

High‐Performance Thermoelectric SnSe: Aqueous Synthesis, Innovations, and Challenges

Pressure-induced enhancement of thermoelectric power factor in pristine and hole-doped SnSe crystals

Energy‐Saving Pathways for Thermoelectric Nanomaterial Synthesis: Hydrothermal/Solvothermal, Microwave‐Assisted, Solution‐Based, and Powder Processing

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