Effect of porosity on the thermoelectric efficiency of PbTe
The effect of electron and phonon scattering on nanometer-sized pores on the thermoelectric properties of lead telluride has been studied theoretically. Estimations show that the thermoelectric efficiency can increase by 20–25% at room temperature and by 5–10% at 600 K at the optimal pore size of se...
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| Veröffentlicht in: | Physics of the solid state 2016-08, Vol.58 (8), p.1532-1538 |
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| container_title | Physics of the solid state |
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| creator | Bulat, L. P. Pshenay-Severin, D. A. Osvenskii, V. B. |
| description | The effect of electron and phonon scattering on nanometer-sized pores on the thermoelectric properties of lead telluride has been studied theoretically. Estimations show that the thermoelectric efficiency can increase by 20–25% at room temperature and by 5–10% at 600 K at the optimal pore size of several nanometers and the porosity of ~10%. An analysis shows that the increase in the thermoelectric efficiency due to additional scattering in the porous material is related to the decrease in the thermal conductivity of the lattice and the increase in the thermoelectric coefficient due to the change in the energy dependence of the relaxation time. To estimate the multiple scattering at high pore concentration, the lattice thermal conductivity by the molecular-dynamics method and the electron free paths in a coherent potential approximation were calculated. It is shown that the inclusion of the multiple scattering slightly influences the thermoelectric properties at noted sizes and pore concentrations. |
| doi_str_mv | 10.1134/S1063783416080084 |
| format | Article |
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To estimate the multiple scattering at high pore concentration, the lattice thermal conductivity by the molecular-dynamics method and the electron free paths in a coherent potential approximation were calculated. It is shown that the inclusion of the multiple scattering slightly influences the thermoelectric properties at noted sizes and pore concentrations.</description><identifier>ISSN: 1063-7834</identifier><identifier>EISSN: 1090-6460</identifier><identifier>DOI: 10.1134/S1063783416080084</identifier><language>eng</language><publisher>Moscow: Pleiades Publishing</publisher><subject>Analysis ; Electric properties ; Electrons ; Molecular dynamics ; Physics ; Physics and Astronomy ; Porosity ; Semiconductors ; Solid State Physics ; Thermal conductivity</subject><ispartof>Physics of the solid state, 2016-08, Vol.58 (8), p.1532-1538</ispartof><rights>Pleiades Publishing, Ltd. 2016</rights><rights>COPYRIGHT 2016 Springer</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c361t-4cd4f600797cbca868ec2cfe2aa703e0bcf023e102706af90fe4f0227aebb7f33</citedby><cites>FETCH-LOGICAL-c361t-4cd4f600797cbca868ec2cfe2aa703e0bcf023e102706af90fe4f0227aebb7f33</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1134/S1063783416080084$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1134/S1063783416080084$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,776,780,27901,27902,41464,42533,51294</link.rule.ids></links><search><creatorcontrib>Bulat, L. 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To estimate the multiple scattering at high pore concentration, the lattice thermal conductivity by the molecular-dynamics method and the electron free paths in a coherent potential approximation were calculated. It is shown that the inclusion of the multiple scattering slightly influences the thermoelectric properties at noted sizes and pore concentrations.</description><subject>Analysis</subject><subject>Electric properties</subject><subject>Electrons</subject><subject>Molecular dynamics</subject><subject>Physics</subject><subject>Physics and Astronomy</subject><subject>Porosity</subject><subject>Semiconductors</subject><subject>Solid State Physics</subject><subject>Thermal conductivity</subject><issn>1063-7834</issn><issn>1090-6460</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><recordid>eNp9kE1LAzEQhoMoWD9-gLe9etg62aTJLp5KqVooKFrPSzadqSntpiRbsP_eLPVSBAlDwszzBOZl7I7DkHMhHz44KKFLIbmCEqCUZ2zAoYJcSQXn_VuJvJ9fsqsY1wCc81E1YI9TIrRd5inb-eCj6w6Zb7PuC_sKW4-bNA7OZkjkrMPWHnr4rVngDbsgs4l4-3tfs8-n6WLyks9fn2eT8Ty3QvEul3YpSQHoStvGmlKVaAtLWBijQSA0lqAQyKHQoAxVQChTp9AGm0aTENdsePx3ZTZYu5Z8F4xNZ4lbZ32L5FJ_LKtRJUrNdRLuT4TEdPjdrcw-xnr28X7K8iNr0_YxINW74LYmHGoOdR9t_Sfa5BRHJya2XWGo134f2pTBP9IPoFx5vA</recordid><startdate>20160801</startdate><enddate>20160801</enddate><creator>Bulat, L. 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Estimations show that the thermoelectric efficiency can increase by 20–25% at room temperature and by 5–10% at 600 K at the optimal pore size of several nanometers and the porosity of ~10%. An analysis shows that the increase in the thermoelectric efficiency due to additional scattering in the porous material is related to the decrease in the thermal conductivity of the lattice and the increase in the thermoelectric coefficient due to the change in the energy dependence of the relaxation time. To estimate the multiple scattering at high pore concentration, the lattice thermal conductivity by the molecular-dynamics method and the electron free paths in a coherent potential approximation were calculated. It is shown that the inclusion of the multiple scattering slightly influences the thermoelectric properties at noted sizes and pore concentrations.</abstract><cop>Moscow</cop><pub>Pleiades Publishing</pub><doi>10.1134/S1063783416080084</doi><tpages>7</tpages></addata></record> |
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| subjects | Analysis Electric properties Electrons Molecular dynamics Physics Physics and Astronomy Porosity Semiconductors Solid State Physics Thermal conductivity |
| title | Effect of porosity on the thermoelectric efficiency of PbTe |
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