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DIGITAL.CSIC
Master thesis . 2021 . Peer-reviewed
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Síntesis y Caracterización termoeléctrica de películas delgadas de pirita

Authors: Peña González, Nuria;

Síntesis y Caracterización termoeléctrica de películas delgadas de pirita

Abstract

[ES] Actualmente, la ciencia de los materiales termoeléctricos se centra en la búsqueda de materiales que sean más eficientes que los estudiados anteriormente y que cumplan con las exigencias de sostenibilidad. Adquiere importancia encontrar elementos que sean abundantes y no tóxicos con los que se puedan preparar compuestos termoeléctricos de bajo coste. Uno de los más indicados es el azufre, que es capaz de formar un gran número de compuestos y fases con elementos muy diferentes. Además, los sulfuros presentan propiedades termoeléctricas aceptables siendo la pirita uno de los más atractivos. En este trabajo se llevará a cabo el análisis de la pirita como material termoeléctrico, al ser un material de bajo coste y gran abundancia. Se realizarán una serie de películas delgadas, cada una de ellas con distinto espesor, y se determinarán sus propiedades termoeléctricas, conductividad eléctrica y coeficiente Seebeck en función de ese espesor. Los resultados obtenidos muestran que apenas hay una influencia del espesor en las propiedades termoeléctricas en el rango de espesores investigado y que es necesario explorar el efecto de espesores menores y/o otros parámetros en las propiedades termoeléctricas en futuros trabajos.

[EN] Nowadays, thermoelectric materials science is focused on the research of more efficient materials than those previously studied, and they should comply with the currently required sustainability. It becomes important to find abundant and non-toxic elements with which low-cost thermoelectric compounds can be prepared. One of the most indicated is sulphur, which can form many compounds and phases with very different elements. In addition, sulphides have acceptable thermoelectric properties and pyrite being one of the most attractive. In this work, the analysis of pyrite as a thermoelectric material will be studied, as it is a low cost and great abundance material. A series of thin films will be made, each with a different thickness, and their thermoelectric properties, electrical conductivity and Seebeck coefficient will be determined as a function of that thickness. The results obtained show that there is hardly an influence of the thickness on the thermoelectric properties in the range of thicknesses investigated and it is necessary to explore the effect of smaller thicknesses and/ or other parameters on thermoelectric properties in future works.

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selected citations
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This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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