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 SM ISO690:2012POPOVICH, Nicolae, SHURA, Vasile. Electrical and thermal transport properties of (TlBiS2) 1-x(2PbS)x alloys. In: Journal of Physics Condensed Matter, 2003, vol. 15, pp. 5389-5396. ISSN 0953-8984. DOI: https://doi.org/10.1088/0953-8984/15/31/306 |
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  Journal of Physics Condensed Matter |
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| Volumul 15 / 2003 / ISSN 0953-8984 /ISSNe 1361-648X | ||||||
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| DOI:https://doi.org/10.1088/0953-8984/15/31/306 | ||||||
| Pag. 5389-5396 | ||||||
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A high efficiency of thermoelectric conversion can be achieved by using materials with a maximum figure of merit Z, i.e. materials with a high Seebeck coefficient S, high electrical conductivity a and low thermal conductivity K. Investigations of transport phenomena in alloys of the (TIBiS2) 1-x(2PbS)x system have shown that in solid solutions of type (A3B5C26) 1-x (2A4B6)x cation substitution according to the scheme 2A4(+2) → A3(+1) + B5(+3) leads to a strong decrease in lattice thermal conductivity KL. In an area (X = 0.50) of the KL = f(C) curve the lattice part of the thermal conductivity of (TlBiS2)1-x(2PbS)x alloys decreases to 0.26 W m-1 K-1 which is approaching the theoretical minimum. As a result, the dependence of the thermoelectric figure of merit on composition Z = f (C) of alloys of the (TlBiS2) 1-x(2PbS)x system passes through a maximum in the area X = 0.50, exceeding by ∼25% the respective value of Z for lead sulfide at room temperature. |
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| Cuvinte-cheie Engineering controlled terms Composition, Electric conductivity, Seebeck effect, Solid solutions, thermal conductivity, Thermoelectricity Engineering uncontrolled terms Thermoelectric materials Engineering main heading Titanium alloys |
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DataCite XML Export
<?xml version='1.0' encoding='utf-8'?> <resource xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns='http://datacite.org/schema/kernel-3' xsi:schemaLocation='http://datacite.org/schema/kernel-3 http://schema.datacite.org/meta/kernel-3/metadata.xsd'> <identifier identifierType='DOI'>10.1088/0953-8984/15/31/306</identifier> <creators> <creator> <creatorName>Popovici, N..</creatorName> <affiliation>Institutul de Fizică Aplicată al AŞM, Moldova, Republica</affiliation> </creator> <creator> <creatorName>Shura, V.K.</creatorName> <affiliation>Institutul de Fizică Aplicată al AŞM, Moldova, Republica</affiliation> </creator> </creators> <titles> <title xml:lang='en'>Electrical and thermal transport properties of (TlBiS2) 1-x(2PbS)x alloys</title> </titles> <publisher>Instrumentul Bibliometric National</publisher> <publicationYear>2003</publicationYear> <relatedIdentifier relatedIdentifierType='ISSN' relationType='IsPartOf'>0953-8984</relatedIdentifier> <subjects> <subject>Engineering controlled terms Composition</subject> <subject>Electric conductivity</subject> <subject>Seebeck effect</subject> <subject>Solid solutions</subject> <subject>thermal conductivity</subject> <subject>Thermoelectricity Engineering uncontrolled terms Thermoelectric materials Engineering main heading Titanium alloys</subject> </subjects> <dates> <date dateType='Issued'>2003-08-13</date> </dates> <resourceType resourceTypeGeneral='Text'>Journal article</resourceType> <descriptions> <description xml:lang='en' descriptionType='Abstract'><p>A high efficiency of thermoelectric conversion can be achieved by using materials with a maximum figure of merit Z, i.e. materials with a high Seebeck coefficient S, high electrical conductivity a and low thermal conductivity K. Investigations of transport phenomena in alloys of the (TIBiS<sub>2</sub>) <sub>1-x</sub>(2PbS)<sub>x</sub> system have shown that in solid solutions of type (A<sup>3</sup>B<sup>5</sup>C<sub>2</sub><sup>6</sup>) <sub>1-x</sub> (2A<sup>4</sup>B<sup>6</sup>)<sub>x</sub> cation substitution according to the scheme 2A<sup>4(+2)</sup> → A<sup>3(+1)</sup> + B<sup>5(+3)</sup> leads to a strong decrease in lattice thermal conductivity K<sub>L</sub>. In an area (X = 0.50) of the K<sub>L</sub> = f(C) curve the lattice part of the thermal conductivity of (TlBiS<sub>2</sub>)<sub>1-x</sub>(2PbS)<sub>x</sub> alloys decreases to 0.26 W m<sup>-1</sup> K<sup>-1</sup> which is approaching the theoretical minimum. As a result, the dependence of the thermoelectric figure of merit on composition Z = f (C) of alloys of the (TlBiS<sub>2</sub>) <sub>1-x</sub>(2PbS)<sub>x</sub> system passes through a maximum in the area X = 0.50, exceeding by ∼25% the respective value of Z for lead sulfide at room temperature.</p></description> </descriptions> <formats> <format>application/pdf</format> </formats> </resource>
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