Journal ArticleDOI
Lattice thermal conductivity of the Cu3SbSe4-Cu3SbS4 solid solution
Eric J. Skoug,Jeffrey D. Cain,Donald T. Morelli,Melanie J. Kirkham,Paul Majsztrik,Edgar Lara-Curzio +5 more
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TLDR
In this article, the compositional dependence of the crystal structure and lattice thermal conductivity in the Cu3SbSe4-SbS4 system has been studied.Abstract:
The compositional dependence of the crystal structure and lattice thermal conductivity in the Cu3SbSe4-Cu3SbS4 system has been studied. The lattice parameters of the Cu3SbSe4-xSx compounds decrease linearly with x, and the tetragonal structure (space group 14−2m no. 121) of the end compounds is maintained at all compositions. The lattice thermal conductivity is much lower than that predicted by a simple rule of mixtures, which is typical for a solid solution. The Debye model produces a very reasonable fit to the experimental lattice thermal conductivity data when phonon scattering due to atomic mass and size differences between Se and S is taken into account. Compounds in this series are likely to improve upon the thermoelectric performance of Cu3SbSe4, which has shown ZT = 0.72 when optimized.read more
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Defect Engineering in Multinary Earth-Abundant Chalcogenide Photovoltaic Materials
TL;DR: In this article, a review of recent efforts targeting accurate identification and engineering of anti-site disorder in kesterite-based CZTSSe are considered, in an effort to develop promising pathways to avoid antisite disordering and associated band tailing in future highperformance earth-abundant photovoltaic technologies.
Journal ArticleDOI
Thermoelectric transport properties of pristine and Na-doped SnSe1−xTex polycrystals
TL;DR: It is revealed that SnSe1-xTex solid solutions are formed when x ranges from 0 to 0.2, and an energy barrier scattering mechanism is suitable for understanding the electrical conducting behaviour observed in the present SnSe polycrystalline materials, which may be associated with abundant defects at grain boundaries.
Journal ArticleDOI
Thermoelectric properties of Sn-doped p-type Cu3SbSe4: a compound with large effective mass and small band gap
TL;DR: In this article, the electrical and thermal transport properties of Sn-doped Cu_3SbSe_4 between 300 K and 673 K were investigated, and it was found that the single parabolic band model explains the electrical transport very well.
Journal ArticleDOI
Copper chalcogenide thermoelectric materials
Tian-Ran Wei,Yuting Qin,Tingting Deng,Qingfeng Song,Binbin Jiang,Ruiheng Liu,Pengfei Qiu,Xun Shi,Lidong Chen +8 more
TL;DR: In this paper, the authors summarize the recent research progress on large family compounds covering diamond-like chalcogenides and liquid-like Cu2X binary compounds as well as their multinary derivatives.
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Low-cost and environmentally benign selenides as promising thermoelectric materials
TL;DR: In this paper, the authors present recent advances in binary and multinary selenide thermoelectric materials, covering traditional PbSe, liquid-like Cu2Se, layered SnSe, diamond-like and disordered multinary compounds.
References
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Journal ArticleDOI
Revised effective ionic radii and systematic studies of interatomic distances in halides and chalcogenides
TL;DR: The effective ionic radii of Shannon & Prewitt [Acta Cryst. (1969), B25, 925-945] are revised to include more unusual oxidation states and coordinations as mentioned in this paper.
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Model for Lattice Thermal Conductivity at Low Temperatures
TL;DR: In this article, a phenomenological model is developed to facilitate calculation of lattice thermal conductivities at low temperatures, where the phonon scattering processes can be represented by frequency-dependent relaxation times.
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The Scattering of Low-Frequency Lattice Waves by Static Imperfections
TL;DR: In this article, the scattering of lattice waves by static imperfections is treated by second-order perturbation theory, where the transition matrix is composed of contributions due to the mass difference of the lattice points, changes in the elastic constants of linkages between lattice point, and elastic strain.
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Lattice Thermal Conductivity of Disordered Semiconductor Alloys at High Temperatures
TL;DR: In this paper, the thermal conductivity of disordered semiconductor alloy is derived using the Klemens-Callaway theory, where the reciprocal relaxation times depend on the frequency of strain and mass point defects, and the ratio of umklapp to normal relaxation times.