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Resumen The energy cost and global warming associated to fossil fuel sources has motivated the search for cleaner, more sustainable energy sources. Among the different feasible technologies, thermoelectric (TE) energy converters have gained attention lately since these solid-state devices can harvest waste heat into electricity, thereby improving the system´s efficiency. The advantages of TE devices versus conventional heat converters are that they are solid-state devices, so they have no… Show more Resumen The energy cost and global warming associated to fossil fuel sources has motivated the search for cleaner, more sustainable energy sources. Among the different feasible technologies, thermoelectric (TE) energy converters have gained attention lately since these solid-state devices can harvest waste heat into electricity, thereby improving the system´s efficiency. The advantages of TE devices versus conventional heat converters are that they are solid-state devices, so they have no noise, zero-emissions, vast scalability, no maintenance and a long operating lifetime. These TE devices can be used not only for power generation but for refrigeration and cooling. The main drawback of this technology is that the state of the art devices has a low efficiency around 10% (ZT~1). Due to that they are currently limited to niche applications. This efficiency is directly related to a dimensionless figure of merit (ZT) Show less

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