Tetrahedrites as thermoelectric materials: an overview

Chetty, Raju; Bali, Ashoka; Mallik, Ramesh Chandra

doi:10.1039/c5tc02537k

Cited by 176 publications

(136 citation statements)

References 111 publications

Supporting

Mentioning

123

Contrasting

Unclassified

Order By: Relevance

“…14b. A detailed review of the studies on this compound can be found [154]. It is somewhat unexpected that few reports are available on electrical transport analysis probably due to the difficulty in accurate Hall measurement.…”

Section: Tetrahedrite and Colusite Mineralsmentioning

confidence: 99%

Copper chalcogenide thermoelectric materials

et al. 2018

View full text Add to dashboard Cite

Cu-based chalcogenides have received increasing attention as promising thermoelectric materials due to their high efficiency, tunable transport properties, high elemental abundance and low toxicity. In this review, we summarize the recent research progress on this large family compounds covering diamond-like chalcogenides and liquid-like Cu 2 X (X=S, Se, Te) binary compounds as well as their multinary derivatives. These materials have the general features of two sublattices to decouple electron and phonon transport properties. On the one hand, the complex crystal structure and the disordered or even liquid-like sublattice bring about an intrinsically low lattice thermal conductivity. On the other hand, the rigid sublattice constitutes the charge-transport network, maintaining a decent electrical performance. For specific material systems, we demonstrate their unique structural features and outline the structure-performance correlation. Various design strategies including doping, alloying, band engineering and nanostructure architecture, covering nearly all the material scale, are also presented. Finally, the potential of the application of Cu-based chalcogenides as high-performance thermoelectric materials is briefly discussed from material design to device development.

show abstract

Section: Tetrahedrite and Colusite Mineralsmentioning

confidence: 99%

Copper chalcogenide thermoelectric materials

et al. 2018

View full text Add to dashboard Cite

show abstract

“…[12][13][14] To date, many researchers have investigated TE properties of various kinds of materials based on Cu-S, as will be mentioned below. The TE properties have been reviewed on the sulfides, 15,16 binary sulfides, 17 Cu-based materials, 18 and tetrahedrites, 19 respectively. This review, on the other hand, aims at highlighting common/unique aspects of various Cu-S based synthetic minerals and related systems with potential for TE applications.…”

Section: Introductionmentioning

confidence: 99%

Research Update: Cu–S based synthetic minerals as efficient thermoelectric materials at medium temperatures

2016

View full text Add to dashboard Cite

Synthetic minerals and related systems based on Cu–S are attractive thermoelectric (TE) materials because of their environmentally benign characters and high figures of merit at around 700 K. This overview features the current examples including kesterite, binary copper sulfides, tetrahedrite, colusite, and chalcopyrite, with emphasis on their crystal structures and TE properties. This survey highlights the superior electronic properties in the p-type materials as well as the close relationship between crystal structures and thermophysical properties. We discuss the mechanisms of high power factor and low lattice thermal conductivity, approaching higher TE performances for the Cu–S based materials.

show abstract

“…5, a value as high as ZT ∼ 2.8 at 300 K is obtained around E F = −0.5 eV, which is higher than unity and higher than currently-reported values for other materials at room temperature. [39][40][41] Two peaks in the thermoelectric figure of merit curve at −0.5 eV and 1 eV are due to two step-like transmission features at −0.5 eV and 1 eV. To demonstrate that the high ZT at E F − E DFT F = −0.5 eV and 1 eV is due to the valence and conduction bands of MoS 2 and not an edge effect, we consider other junctions shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

MoS₂ nano flakes with self-adaptive contacts for efficient thermoelectric energy harvesting

Sadeghi

Lambert

2018

Nanoscale

View full text Add to dashboard Cite

We examine the potential of the low-dimensional material MoS 2 for the efficient conversion of waste heat to electricity via the Seebeck effect. Recently monolayer MoS 2 nano flakes with self-adaptive Mo 6 S 6 contacts were formed, which take advantage of mechanical stability and chemical covalent bonding to the MoS 2 . Here, we study the thermoelectric properties of these junctions by calculating their conductance, thermopower and thermal conductance due to both electrons and phonons. We show that thermoelectric figures of merit ZT as high as ∼2.8 are accessible in these junctions, independent of the flake size and shape, provided the Fermi energy is close to a band edge. We show that Nb dopants as substituents for Mo atoms can be used to tune the Fermi energy, and despite the associated inhomogeneous broadening, room temperature values as high as ZT ∼ 0.6 are accessible, increasing to 0.8 at 500 K.

show abstract

Tetrahedrites as thermoelectric materials: an overview

Abstract: This review discusses about the crystal structure, chemical bonding, and the electronic band structure of tetrahedrite materials. Also, this review outlines the effect of different doping elements on the thermoelectric properties of tetrahedrite materials.

Cited by 176 publications

References 111 publications

Copper chalcogenide thermoelectric materials

Copper chalcogenide thermoelectric materials

Research Update: Cu–S based synthetic minerals as efficient thermoelectric materials at medium temperatures

MoS₂ nano flakes with self-adaptive contacts for efficient thermoelectric energy harvesting

Contact Info

Product

Resources

About

Tetrahedrites as thermoelectric materials: an overview

Abstract: This review discusses about the crystal structure, chemical bonding, and the electronic band structure of tetrahedrite materials. Also, this review outlines the effect of different doping elements on the thermoelectric properties of tetrahedrite materials.

Cited by 176 publications

References 111 publications

Copper chalcogenide thermoelectric materials

Copper chalcogenide thermoelectric materials

Research Update: Cu–S based synthetic minerals as efficient thermoelectric materials at medium temperatures

MoS2 nano flakes with self-adaptive contacts for efficient thermoelectric energy harvesting

Contact Info

Product

Resources

About

MoS₂ nano flakes with self-adaptive contacts for efficient thermoelectric energy harvesting