Thermoelectric properties of PbSe0.5Te0.5: x (PbI2) with endotaxial nanostructures: a promising n-type thermoelectric material
2013 (English)In: Nanotechnology, ISSN 0957-4484, E-ISSN 1361-6528, Vol. 24, no 21Article in journal (Refereed) Published
In the present investigation, we report on the thermoelectric properties of PbSe0.5Te0.5: x (PbI2) from room temperature to 625 K. High-resolution transmission electron micrographs of the samples reveal endotaxial nanostructures embedded in a PbSe0.5Te0.5 matrix. The combined effect of mass fluctuation and nanostructures reduces the thermal conductivity to a great extent compared to PbTe and PbSe, without affecting the carrier mobility. As a result, a thermoelectric figure of merit with a value of 1.5 is achieved at 625 K. This value is significantly higher than that of the available state-of-the-art n-type materials.
Place, publisher, year, edition, pages
Institute of Physics: Hybrid Open Access , 2013. Vol. 24, no 21
Engineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-93383DOI: 10.1088/0957-4484/24/21/215401ISI: 000318223300015OAI: oai:DiVA.org:liu-93383DiVA: diva2:624501
Funding Agencies|CSIR through CSIR (NET)||2013-05-312013-05-312013-05-31