Enhanced thermoelectric performance of Sn-doped Cu<sub>3</sub>SbS<sub>4</sub>

Chen, Kan; Paola, C. Di; Du, Baoli; Zhang, Ruizhi; Laricchia, Savio; Bonini, Nicola; Weber, Cédric; Abrahams, Isaac; Yan, Haixue; Reece, Mike

doi:10.1039/c8tc02481b

Cited by 63 publications

(61 citation statements)

References 62 publications

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“…In fact, κ lat higher than 1 W K −1 m −1 was predicted for Cu–S‐based materials, CuFeS 2 , [ 49 ] CuGaS 2 , [ 50 ] Cu 2 ZnGeS 4 , [ 50 ] Cu 3 SbS 4 (Figure S7, Supporting Information), and Cu 3 PS 4 (Figure S5, Supporting Information). Notably, for CuFeS 2 , [ 53 ] Cu 3 SbS 4 , [ 28,29 ] and Cu 3 PS 4 , κ lat of the polycrystalline samples was decreased by reducing the crystallite size. The common effect of nano/microstructuring in these materials is likely attributed to a similar trend in cumulative κ lat (Figure 5d; Figure S7, Supporting Information; Ref.…”

Section: Resultsmentioning

confidence: 99%

“…For famatinites Cu 3 SbS 4 without such structural characteristics, κ lat must be suppressed by an enhancement of phonon‐grain boundary scattering and phonon‐point defect scattering. [ 28,29 ] As a result, the combination of high S 2 ρ −1 and reduced κ lat leads to a high ZT of 0.5–1.0 at 623–673 K for ZB‐derivative Cu–S‐based materials. [ 15,16,18–20,28–32 ] The Cu–S‐based p‐type materials are expected to be used as counterparts of n‐type materials (e.g., PbTe‐based alloys [ 33,34 ] and half‐Heusler alloys [ 35 ] ) for constructing a Π‐shaped TE power generator.…”

Section: Introductionmentioning

confidence: 99%

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Enargite Cu₃PS₄: A Cu–S‐Based Thermoelectric Material with a Wurtzite‐Derivative Structure

Tanimoto

Suekuni

Tanishita

et al. 2020

Adv Funct Materials

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(1 of 8)Compound semiconductors derived from ZnS (zincblende and wurtzite) with tetrahedral framework structures have functions for various applications. Examples of such materials include Cu-S-based materials with zincblendederivative structures, which have attracted attention as thermoelectric (TE) materials over the past decade. This study illuminates superior TE performance in polycrystalline samples of enargite Cu 3 P 1−x Ge x S 4 with a wurtzite-derivative structure. The substitution of Ge for P dopes holes into the top of the valence band composed of Cu-3d and S-3p, whereby its multiband characteristic leads to a high TE power factor. Furthermore, a reduction in the grain size to 50-300 nm can effectively decrease phonon mean free paths, leading to low thermal conductivity. These features result in a dimensionless TE figure of merit ZT of 0.5 at 673 K for the x = 0.2 sample. Environmentally benign and low-cost characteristics of the constituent elements of Cu 3 PS 4 , as well as its high-performance thermoelectricity, make it a promising candidate for large-scale TE applications. Furthermore, this finding extends the development field of Cu-S-based TE materials to those with wurtzite-derivative structures.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Enargite Cu₃PS₄: A Cu–S‐Based Thermoelectric Material with a Wurtzite‐Derivative Structure

Tanimoto

Suekuni

Tanishita

et al. 2020

Adv Funct Materials

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“…A similar behavior was also observed in Zn and Se double-substituted samples, where a higher Se bond covalency resulted in an increase in the lattice component of thermal conductivity. 12 The other factors for a high κ L in x = 1 sample could be the influence of secondary phase in the sample with a high Sn content (Cu 3 Sb 0.1 Sn 0.95 S 4 ), which possesses a relatively higher thermal conductivity 21 Figure 13.…”

Section: Electron Probe Microanalysis (Epma)mentioning

confidence: 99%

Effect of Sn Substitution on the Thermoelectric Properties of Synthetic Tetrahedrite

Tippireddy

Kumar

Karati

et al. 2019

ACS Appl. Mater. Interfaces

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The present study reports the effect of Sn substitution on the structural and thermoelectric properties of synthetic tetrahedrite (Cu 12 Sb 4 S 13) system. The samples were prepared with the intended compositions of Cu 12 Sb 4−x Sn x S 13 (x = 0.25, 0.35, 0.5, 1) and sintered using spark plasma sintering. A detailed structural characterization of the samples revealed tetrahedrite phase as the main phase with Sn substituting at both Cu and Sb sites instead of only Sb site. The theoretical calculations using density functional theory revealed that Sn at Cu(1) 12d or Cu(2) 12e site moves the Fermi level (E F) toward the band gap, whereas Sn at Sb 8c site introduces hybridized hole states near E F. Consequently, a relatively high optimum power factor of 1.3 mW/mK 2 was achieved by the x = 0.35 sample. The Sn-substituted samples exhibited a significant decrease in the total thermal conductivity (κ T) compared to the pristine composition (Cu 12 Sb 4 S 13), primarily because of reduced electronic thermal conductivity. Due to an optimum power factor (1.3 mW/mK 2) and reduced thermal conductivity (0.9 W/mK), a maximum zT of 0.96 at 673 K was achieved for x = 0.35 sample, which is nearly 40% increment compared to that of the pristine (Cu 12 Sb 4 S 13) sample.

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“…Another interesting mineral called famatinite (Cu 3 SbS 4 ) is also investigated for its thermoelectric properties . Compared to other minerals of copper sulfide, it has a simple crystal structure.…”

Section: Strategies To Improve Thermoelectric Properties Of Copper Sumentioning

confidence: 99%

“…Good thermoelectric performance has been achieved in Cu 3 SbS 4 compound by doping it with different elements. Recently, Chen et al tried the Sn doping into it and observed that the substitution of Sn in place of Sb leading to high power factor and a maximum zT of 0.72 at 623 K in Cu 3 Sb 1− x Sn x S 4 for x = 0.05 . Similarly, Suzumura et al made an effort to dope Ag and Ge to Cu 3 SbS 4 .…”

Section: Strategies To Improve Thermoelectric Properties Of Copper Sumentioning

confidence: 99%

Copper Sulfides: Earth‐Abundant and Low‐Cost Thermoelectric Materials

Mulla

Rabinal

2019

Energy Tech

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The depletion of nonrenewable energy sources insisted the search for new types of energy solutions. Thermoelectric conversion is one possible energy solution which converts waste heat into useful electricity. In the past several years, thermoelectric research developed many novel materials. Among these, most of the practically useful materials with better performance are based on Bi, Pb, Te, and Sb, but are toxic and expensive. There is a need of earth‐abundant, low‐cost, and less‐toxic compounds with superior thermoelectric performance so as to realize the large‐scale commercial applications. Recent studies have identified eco‐friendly thermoelectric materials based on the alloys of copper and sulfur, suggesting an alternative to the well‐established expensive thermoelectric materials. These compounds exhibit interesting electronic properties with better thermoelectric efficiency (zT). The structural properties permit to decouple electrical and thermal conductivities, which is an essential requirement to get improved efficiency. Several approaches, such as phase tuning, doping, nanostructure/microstructure designing, compound formation, etc., are chosen to increase the performance. On the whole, the present review summarizes the strategies and techniques that have been adopted to improve the thermoelectric behavior of copper sulfides and its compounds.

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Enhanced thermoelectric performance of Sn-doped Cu₃SbS₄

Abstract: Enhanced thermoelectric performance of Cu3SbS4 with fine microstructure and optimized carrier concentration by Sn-doping.

Cited by 63 publications

References 62 publications

Enargite Cu₃PS₄: A Cu–S‐Based Thermoelectric Material with a Wurtzite‐Derivative Structure

Enargite Cu₃PS₄: A Cu–S‐Based Thermoelectric Material with a Wurtzite‐Derivative Structure

Effect of Sn Substitution on the Thermoelectric Properties of Synthetic Tetrahedrite

Copper Sulfides: Earth‐Abundant and Low‐Cost Thermoelectric Materials

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Enhanced thermoelectric performance of Sn-doped Cu3SbS4

Abstract: Enhanced thermoelectric performance of Cu3SbS4 with fine microstructure and optimized carrier concentration by Sn-doping.

Cited by 63 publications

References 62 publications

Enargite Cu3PS4: A Cu–S‐Based Thermoelectric Material with a Wurtzite‐Derivative Structure

Enargite Cu3PS4: A Cu–S‐Based Thermoelectric Material with a Wurtzite‐Derivative Structure

Effect of Sn Substitution on the Thermoelectric Properties of Synthetic Tetrahedrite

Copper Sulfides: Earth‐Abundant and Low‐Cost Thermoelectric Materials

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Enhanced thermoelectric performance of Sn-doped Cu₃SbS₄

Enargite Cu₃PS₄: A Cu–S‐Based Thermoelectric Material with a Wurtzite‐Derivative Structure

Enargite Cu₃PS₄: A Cu–S‐Based Thermoelectric Material with a Wurtzite‐Derivative Structure