Interfacial energy band and phonon scattering effect in Bi2Te3-polypyrrole hybrid thermoelectric material
We hybridized n-type Bi2Te3 with an inexpensive and abundantly available conducting polymer, polypyrrole, to obtain a bulk-structured hybrid material in which the interfacial energy band and the phonon scattering effects should occur at the interface of the two components. The obtained hybrid materi...
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creator | Kim, Cham Baek, Ju Young Lopez, David Humberto Kim, Dong Hwan Kim, Hoyoung |
description | We hybridized n-type Bi2Te3 with an inexpensive and abundantly available conducting polymer, polypyrrole, to obtain a bulk-structured hybrid material in which the interfacial energy band and the phonon scattering effects should occur at the interface of the two components. The obtained hybrid material inevitably exhibited a lower electrical conductivity than pristine Bi2Te3, which may be attributable to carrier scattering at the interfacial energy barrier. However, the hybrid material completely compensated for this loss in electrical conductivity with a significant increase in the Seebeck coefficient, and thus it retained the power factor with no loss. In addition, the hybrid material displayed a much lower thermal conductivity than pristine Bi2Te3 owing to the phonon scattering effect. The hybrid material exhibited significant decoupling of the electrical and thermal properties, thus affording state-of-the-art figures of merit (ZT ∼ 0.98 at 25 °C, ZTmax ∼ 1.21 at 100 °C, and ZTave ∼ 1.18 at 50–150 °C) that exceed those of most of the previously reported n-type Bi2Te3 or Bi2(Te,Se)3 materials. |
doi_str_mv | 10.1063/1.5050089 |
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The obtained hybrid material inevitably exhibited a lower electrical conductivity than pristine Bi2Te3, which may be attributable to carrier scattering at the interfacial energy barrier. However, the hybrid material completely compensated for this loss in electrical conductivity with a significant increase in the Seebeck coefficient, and thus it retained the power factor with no loss. In addition, the hybrid material displayed a much lower thermal conductivity than pristine Bi2Te3 owing to the phonon scattering effect. The hybrid material exhibited significant decoupling of the electrical and thermal properties, thus affording state-of-the-art figures of merit (ZT ∼ 0.98 at 25 °C, ZTmax ∼ 1.21 at 100 °C, and ZTave ∼ 1.18 at 50–150 °C) that exceed those of most of the previously reported n-type Bi2Te3 or Bi2(Te,Se)3 materials.</description><identifier>ISSN: 0003-6951</identifier><identifier>EISSN: 1077-3118</identifier><identifier>DOI: 10.1063/1.5050089</identifier><identifier>CODEN: APPLAB</identifier><language>eng</language><publisher>Melville: American Institute of Physics</publisher><subject>Applied physics ; Bismuth tellurides ; Conducting polymers ; Decoupling ; Electrical resistivity ; Interfacial energy ; Machine tool industry ; Photovoltaic cells ; Polypyrroles ; Power factor ; Scattering ; Seebeck effect ; Thermal conductivity ; Thermodynamic properties ; Thermoelectric materials</subject><ispartof>Applied physics letters, 2018-10, Vol.113 (15)</ispartof><rights>Author(s)</rights><rights>2018 Author(s). Published by AIP Publishing.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c362t-ca5a99e8891f49b67cebcb23172345992b987ff9d4900e8e338b4efd3089ac123</citedby><cites>FETCH-LOGICAL-c362t-ca5a99e8891f49b67cebcb23172345992b987ff9d4900e8e338b4efd3089ac123</cites><orcidid>0000-0002-1539-874X</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://pubs.aip.org/apl/article-lookup/doi/10.1063/1.5050089$$EHTML$$P50$$Gscitation$$H</linktohtml><link.rule.ids>314,776,780,790,4498,27901,27902,76353</link.rule.ids></links><search><creatorcontrib>Kim, Cham</creatorcontrib><creatorcontrib>Baek, Ju Young</creatorcontrib><creatorcontrib>Lopez, David Humberto</creatorcontrib><creatorcontrib>Kim, Dong Hwan</creatorcontrib><creatorcontrib>Kim, Hoyoung</creatorcontrib><title>Interfacial energy band and phonon scattering effect in Bi2Te3-polypyrrole hybrid thermoelectric material</title><title>Applied physics letters</title><description>We hybridized n-type Bi2Te3 with an inexpensive and abundantly available conducting polymer, polypyrrole, to obtain a bulk-structured hybrid material in which the interfacial energy band and the phonon scattering effects should occur at the interface of the two components. The obtained hybrid material inevitably exhibited a lower electrical conductivity than pristine Bi2Te3, which may be attributable to carrier scattering at the interfacial energy barrier. However, the hybrid material completely compensated for this loss in electrical conductivity with a significant increase in the Seebeck coefficient, and thus it retained the power factor with no loss. In addition, the hybrid material displayed a much lower thermal conductivity than pristine Bi2Te3 owing to the phonon scattering effect. The hybrid material exhibited significant decoupling of the electrical and thermal properties, thus affording state-of-the-art figures of merit (ZT ∼ 0.98 at 25 °C, ZTmax ∼ 1.21 at 100 °C, and ZTave ∼ 1.18 at 50–150 °C) that exceed those of most of the previously reported n-type Bi2Te3 or Bi2(Te,Se)3 materials.</description><subject>Applied physics</subject><subject>Bismuth tellurides</subject><subject>Conducting polymers</subject><subject>Decoupling</subject><subject>Electrical resistivity</subject><subject>Interfacial energy</subject><subject>Machine tool industry</subject><subject>Photovoltaic cells</subject><subject>Polypyrroles</subject><subject>Power factor</subject><subject>Scattering</subject><subject>Seebeck effect</subject><subject>Thermal conductivity</subject><subject>Thermodynamic properties</subject><subject>Thermoelectric materials</subject><issn>0003-6951</issn><issn>1077-3118</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><recordid>eNp90EtLAzEQAOAgCtbqwX8Q8KSwNY_NZnPU4qNQ8FLPSzY7aVO2yZpNhf33bqnoQfAwDAPfzDCD0DUlM0oKfk9ngghCSnWCJpRImXFKy1M0IYTwrFCCnqOLvt-OpWCcT5Bb-ATRauN0i8FDXA-41r7Bh-g2wQePe6PTiJxfY7AWTMLO40fHVsCzLrRDN8QYWsCboY6uwWkDcRegHWF0Bu_0oVe3l-jM6raHq-88Re_PT6v5a7Z8e1nMH5aZ4QVLmdFCKwVlqajNVV1IA7WpGaeS8VwoxWpVSmtVkytCoATOyzoH2_DxZm0o41N0c5zbxfCxhz5V27CPflxZMUoloUJKMarbozIx9H0EW3XR7XQcKkqqwycrWn1_crR3R9sbl3Rywf_gzxB_YdU19j_8d_IXQHmCcg</recordid><startdate>20181008</startdate><enddate>20181008</enddate><creator>Kim, Cham</creator><creator>Baek, Ju Young</creator><creator>Lopez, David Humberto</creator><creator>Kim, Dong Hwan</creator><creator>Kim, Hoyoung</creator><general>American Institute of Physics</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><orcidid>https://orcid.org/0000-0002-1539-874X</orcidid></search><sort><creationdate>20181008</creationdate><title>Interfacial energy band and phonon scattering effect in Bi2Te3-polypyrrole hybrid thermoelectric material</title><author>Kim, Cham ; Baek, Ju Young ; Lopez, David Humberto ; Kim, Dong Hwan ; Kim, Hoyoung</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c362t-ca5a99e8891f49b67cebcb23172345992b987ff9d4900e8e338b4efd3089ac123</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Applied physics</topic><topic>Bismuth tellurides</topic><topic>Conducting polymers</topic><topic>Decoupling</topic><topic>Electrical resistivity</topic><topic>Interfacial energy</topic><topic>Machine tool industry</topic><topic>Photovoltaic cells</topic><topic>Polypyrroles</topic><topic>Power factor</topic><topic>Scattering</topic><topic>Seebeck effect</topic><topic>Thermal conductivity</topic><topic>Thermodynamic properties</topic><topic>Thermoelectric materials</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kim, Cham</creatorcontrib><creatorcontrib>Baek, Ju Young</creatorcontrib><creatorcontrib>Lopez, David Humberto</creatorcontrib><creatorcontrib>Kim, Dong Hwan</creatorcontrib><creatorcontrib>Kim, Hoyoung</creatorcontrib><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Applied physics letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kim, Cham</au><au>Baek, Ju Young</au><au>Lopez, David Humberto</au><au>Kim, Dong Hwan</au><au>Kim, Hoyoung</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Interfacial energy band and phonon scattering effect in Bi2Te3-polypyrrole hybrid thermoelectric material</atitle><jtitle>Applied physics letters</jtitle><date>2018-10-08</date><risdate>2018</risdate><volume>113</volume><issue>15</issue><issn>0003-6951</issn><eissn>1077-3118</eissn><coden>APPLAB</coden><abstract>We hybridized n-type Bi2Te3 with an inexpensive and abundantly available conducting polymer, polypyrrole, to obtain a bulk-structured hybrid material in which the interfacial energy band and the phonon scattering effects should occur at the interface of the two components. The obtained hybrid material inevitably exhibited a lower electrical conductivity than pristine Bi2Te3, which may be attributable to carrier scattering at the interfacial energy barrier. However, the hybrid material completely compensated for this loss in electrical conductivity with a significant increase in the Seebeck coefficient, and thus it retained the power factor with no loss. In addition, the hybrid material displayed a much lower thermal conductivity than pristine Bi2Te3 owing to the phonon scattering effect. The hybrid material exhibited significant decoupling of the electrical and thermal properties, thus affording state-of-the-art figures of merit (ZT ∼ 0.98 at 25 °C, ZTmax ∼ 1.21 at 100 °C, and ZTave ∼ 1.18 at 50–150 °C) that exceed those of most of the previously reported n-type Bi2Te3 or Bi2(Te,Se)3 materials.</abstract><cop>Melville</cop><pub>American Institute of Physics</pub><doi>10.1063/1.5050089</doi><tpages>5</tpages><orcidid>https://orcid.org/0000-0002-1539-874X</orcidid><oa>free_for_read</oa></addata></record> |
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source | AIP Journals Complete; Alma/SFX Local Collection |
subjects | Applied physics Bismuth tellurides Conducting polymers Decoupling Electrical resistivity Interfacial energy Machine tool industry Photovoltaic cells Polypyrroles Power factor Scattering Seebeck effect Thermal conductivity Thermodynamic properties Thermoelectric materials |
title | Interfacial energy band and phonon scattering effect in Bi2Te3-polypyrrole hybrid thermoelectric material |
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