Thermoelectric Properties of CuIn1—xGaxTe2 Single Crystals

Kuhn, Barbara; Kaefer, W.; Fess, K.; Friemelt, K.; Turner, Ch.; Wendl, M.; Bücher, E.

doi:10.1002/1521-396x(199708)162:2<661::aid-pssa661>3.0.co;2-m

Cited by 46 publications

(25 citation statements)

References 9 publications

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“…This behavior is consistent with the temperature dependence of the Seebeck coefficient. The n H value of our sample at room temperature was 1.1 × 10 18 cm −3 , which is two orders lower than the literature value of 1.1 × 10 20 cm −3 at room temperature 22. On the other hand, S of our sample (+380 μVK −1 at 300 K) is much higher than the literature value (+84 μVK −1 at room temperature) 22.…”

contrasting

confidence: 77%

“…CuGaTe 2 is a p ‐type semiconductor with a band gap of approximately 1.2 eV. Although CuGaTe 2 is a well‐known semiconductor considered to be a promising candidate for thin film solar cells, photovoltaic devices, and so on,13–22 the TE properties of this material have scarcely been investigated. Other chalcopyrites investigated as TEs include Cu 2 M SnQ 4 ( M = Zn, Cd; Q = S, Se),23–26 however, none of these have achieved such high ZT .…”

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confidence: 99%

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Structural changes, chemical composition and antioxidant activity of cherry tomato fruits (cv. Micro‐Tom) stored under optimal and chilling conditions

et al. 2009

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BACKGROUND: Cherry tomato fruits cv. Micro-Tom, a model plant for tomato genetics, were analysed in order to determine the main structural and chemical changes under optimal and chilling storage conditions. The comparison of Micro-Tom to standard tomato cultivars will give an insight into suitability of this dwarf cultivar as a model for studying the influence of low-temperature conditions on tomato fruits.

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confidence: 77%

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confidence: 99%

Structural changes, chemical composition and antioxidant activity of cherry tomato fruits (cv. Micro‐Tom) stored under optimal and chilling conditions

et al. 2009

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“…While CuGaTe2 can be synthesized simply by melting at the stoichiometric ratio of Cu/Ga/Te = 1:1:2, the synthesis of pure ZnSnSb2 is extremely difficult to achieve as it involves a peritectic reaction. 2,9,14,15 Hence, the TE properties of ZnSnSb2 have not been well studied previously.…”

Section: Resultsmentioning

confidence: 99%

Chalcopyrite ZnSnSb₂: A Promising Thermoelectric Material

Nomura

Choi

Ishimaru

et al. 2018

ACS Appl. Mater. Interfaces

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Ternary compounds with a tetragonal chalcopyrite structure, such as CuGaTe 2 , are promising thermoelectric (TE) materials. It has been demonstrated in various chalcopyrite systems, including compounds with quaternary chalcopyrite-like structures, that the lattice parameter ratio, c/a, being exactly 2.00 to have a pseudocubic structure is key to increase the degeneracy at the valence band edge and ultimately achieve high TE performance. Considering the fact that ZnSnSb 2 with a chalcopyrite structure is reported to have c/a close to 2.00, it is expected to have multiple valence bands leading to a high p-type zT. However, there are no complete investigations on the high temperature TE properties of ZnSnSb 2 mainly because of the difficulty of obtaining a single-phase ZnSnSb 2 . In the present study, pure ZnSnSb 2 samples with no impurities are synthesized successfully using a Sn flux-based method and TE properties are characterized up to 585 K. Transport properties and thermal analysis indicate that the structure of ZnSnSb 2 remains chalcopyrite with no order− disorder transition and clearly show that ZnSnSb 2 can be made to exhibit a high zT in the low-to-mid temperature range through further optimization.

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“…At room temperature the measured values of n and µ are 2.93 × 10 18 cm -3 and 85.32 cm 2 V -1 s -1 . With m* = 1.26m 0 [4,33], we obtained D = 3.367 × 10 -5 m 2 s -1 . If we suppose that the dielectric constant κ = 10 as in CuInSe 2 [2], then F is determined from Eq.…”

Section: Resultsmentioning

confidence: 89%

“…In addition, these compounds are also very useful in understanding and extending the basic physical concepts of the electrical conduction mechanisms involved in elemental and ternary compound semiconductors. Since it has been difficult to produce goodquality single-phase samples of this material, only limited work on its electrical [1,4], optical [1,5] and thermal [4,6] properties, mainly in polycrystalline samples, appears in the literature.…”

Section: Introductionmentioning

confidence: 99%

Metallic magnetoconductivity in copper gallium telluride

Essaleh

Galibert²,

Wasim

et al. 2003

Physica Status Solidi (b)

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Low-temperature magnetoresistance measurements, in the metallic regime, on p-type CuGaTe 2 were performed. The magnetoresistance results were analyzed using localization and electron-electron theories taking into account the effect of strong spin-orbit coupling. The results were compared to those related to CuInSe 2 . Good agreement of the experimental data with theory was found over a wide range of magnetic fields up to 20 T. From the theoretical fit, both the inelastic and spin-orbit relaxation times were estimated.Des mesures de la magnétorésistance du p-CuGaTe 2 , dans le régime métallique, sont effectuées à basses températures. Les résultats sont analyéses à l'aide des théories de faible localisation et interactions electron-electron en prenant en compte l'effet d'un fort couplage spin-orbit. Les résultats sont comparées à ceux déterminés pour le CuInSe 2 . Un bon accord est obtenu dans une large gamme de champ magnétique allant jusqu'à 20 T. A partir des fits, les temps de relaxation relatifs aux diffusions inélastiques et spinorbit sont déterminées.

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Thermoelectric Properties of CuIn1—xGaxTe2 Single Crystals

Cited by 46 publications

References 9 publications

Structural changes, chemical composition and antioxidant activity of cherry tomato fruits (cv. Micro‐Tom) stored under optimal and chilling conditions

Structural changes, chemical composition and antioxidant activity of cherry tomato fruits (cv. Micro‐Tom) stored under optimal and chilling conditions

Chalcopyrite ZnSnSb₂: A Promising Thermoelectric Material

Metallic magnetoconductivity in copper gallium telluride

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Thermoelectric Properties of CuIn1—xGaxTe2 Single Crystals

Cited by 46 publications

References 9 publications

Structural changes, chemical composition and antioxidant activity of cherry tomato fruits (cv. Micro‐Tom) stored under optimal and chilling conditions

Structural changes, chemical composition and antioxidant activity of cherry tomato fruits (cv. Micro‐Tom) stored under optimal and chilling conditions

Chalcopyrite ZnSnSb2: A Promising Thermoelectric Material

Metallic magnetoconductivity in copper gallium telluride

Contact Info

Product

Resources

About

Chalcopyrite ZnSnSb₂: A Promising Thermoelectric Material