Kesterite (Cu2ZnSnS4, CZTS) powders were produced by reactive high-energy milling, starting from stoichiometric mixtures of the elemental components. CZTS forms fine crystals with a cubic structure, which evolves to the stable tetragonal form after thermal treatment. Tablets were produced by cold pressing of the ball milled powder, and sintered up to 660 °C. Seebeck coefficient, electrical resistivity, and thermal diffusivity were measured on the sintered tablets, pointing out the positive effect of CZTS nanostructure and of the rather large fraction of porosity: thermal conductivity is rather low (from ~0.8 W/(m K) at 20 °C to ~0.42 W/(m K) at 500 °C), while electrical conduction is not seriously hindered (electrical resistivity from ~8500 µΩ m at 40 °C to ~2000 µΩ m at 400 °C). Preliminary results of thermoelectric behavior are promising

Nanostructured kesterite (Cu2ZnSnS4) for applications in thermoelectric devices / Isotta, Eleonora; Pugno, N. M.; Scardi, P.. - In: POWDER DIFFRACTION. - ISSN 0885-7156. - ELETTRONICO. - 34:1(2019), pp. S42-S47. [10.1017/S0885715619000277]

Nanostructured kesterite (Cu2ZnSnS4) for applications in thermoelectric devices

Isotta, Eleonora;N. M. Pugno;P. Scardi
2019-01-01

Abstract

Kesterite (Cu2ZnSnS4, CZTS) powders were produced by reactive high-energy milling, starting from stoichiometric mixtures of the elemental components. CZTS forms fine crystals with a cubic structure, which evolves to the stable tetragonal form after thermal treatment. Tablets were produced by cold pressing of the ball milled powder, and sintered up to 660 °C. Seebeck coefficient, electrical resistivity, and thermal diffusivity were measured on the sintered tablets, pointing out the positive effect of CZTS nanostructure and of the rather large fraction of porosity: thermal conductivity is rather low (from ~0.8 W/(m K) at 20 °C to ~0.42 W/(m K) at 500 °C), while electrical conduction is not seriously hindered (electrical resistivity from ~8500 µΩ m at 40 °C to ~2000 µΩ m at 400 °C). Preliminary results of thermoelectric behavior are promising
2019
1
Isotta, Eleonora; Pugno, N. M.; Scardi, P.
Nanostructured kesterite (Cu2ZnSnS4) for applications in thermoelectric devices / Isotta, Eleonora; Pugno, N. M.; Scardi, P.. - In: POWDER DIFFRACTION. - ISSN 0885-7156. - ELETTRONICO. - 34:1(2019), pp. S42-S47. [10.1017/S0885715619000277]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11572/233811
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