Thermal stability and thermoelectric properties of Cu<sub>x</sub>As<sub>40−x</sub>Te<sub>60−y</sub>Se<sub>y</sub> semiconducting glasses - Institut Charles Gerhardt - Institut de Chimie Moléculaire et des Matériaux de Montpellier Accéder directement au contenu
Article Dans Une Revue Journal of Solid State Chemistry Année : 2013

Thermal stability and thermoelectric properties of CuxAs40−xTe60−ySey semiconducting glasses

Eric Alleno
Bertrand Lenoir
Christophe Candolfi
Anne Dauscher
Judith Monnier

Résumé

We report on the thermal behavior and thermoelectric properties of bulk chalcogenide glasses in the systems CuxAs40−xTe60 (20 ≤ x ≤ 32.5) and CuxAs40−xTe60−ySey, (0 ≤ y ≤ 9) synthesized by conventional melt-quenching techniques. The thermal stability of these glasses was probed by differential scanning calorimetry to determine the characteristic Tg and ΔT temperatures, both of which increasing noticeably with y. Thermoelectric properties were found to be mainly influenced by the Cu concentration with respect to the Se content. The thermal conductivity is practically composition-independent throughout the compositional range covered. A maximum ZT value of 0.02 at 300K increasing to 0.06 at 375 K was achieved for the composition Cu30As10Te54Se6.
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Dates et versions

hal-00824047 , version 1 (09-03-2023)

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Jean-Baptiste Vaney, Andrea Piarristeguy, Annie Pradel, Eric Alleno, Bertrand Lenoir, et al.. Thermal stability and thermoelectric properties of CuxAs40−xTe60−ySey semiconducting glasses. Journal of Solid State Chemistry, 2013, 203, pp.212-217. ⟨10.1016/j.jssc.2013.04.015⟩. ⟨hal-00824047⟩
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