Thermoelectric transport in surface- and antimony-doped bismuth telluride nanoplates
We report the in-plane thermoelectric properties of suspended (Bi1−xSbx)2Te3 nanoplates with x ranging from 0.07 to 0.95 and thicknesses ranging from 9 to 42 nm. The results presented here reveal a trend of increasing p-type behavior with increasing antimony concentration, and a maximum Seebeck coef...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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AIP Publishing LLC
2016-10-01
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| Series: | APL Materials |
| Online Access: | http://dx.doi.org/10.1063/1.4955400 |
| _version_ | 1828875332981096448 |
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| author | Michael Thompson Pettes Jaehyun Kim Wei Wu Karen C. Bustillo Li Shi |
| author_facet | Michael Thompson Pettes Jaehyun Kim Wei Wu Karen C. Bustillo Li Shi |
| author_sort | Michael Thompson Pettes |
| collection | DOAJ |
| description | We report the in-plane thermoelectric properties of suspended (Bi1−xSbx)2Te3 nanoplates with x ranging from 0.07 to 0.95 and thicknesses ranging from 9 to 42 nm. The results presented here reveal a trend of increasing p-type behavior with increasing antimony concentration, and a maximum Seebeck coefficient and thermoelectric figure of merit at x ∼ 0.5. We additionally tuned extrinsic doping of the surface using a tetrafluoro-tetracyanoquinodimethane (F4-TCNQ) coating. The lattice thermal conductivity is found to be below that for undoped ultrathin Bi2Te3 nanoplates of comparable thickness and in the range of 0.2–0.7 W m−1 K−1 at room temperature. |
| first_indexed | 2024-12-13T07:57:06Z |
| format | Article |
| id | doaj.art-c434a03a292b4e94acd664db9b76fa44 |
| institution | Directory Open Access Journal |
| issn | 2166-532X |
| language | English |
| last_indexed | 2024-12-13T07:57:06Z |
| publishDate | 2016-10-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | APL Materials |
| spelling | doaj.art-c434a03a292b4e94acd664db9b76fa442022-12-21T23:54:31ZengAIP Publishing LLCAPL Materials2166-532X2016-10-01410104810104810-910.1063/1.4955400014695APMThermoelectric transport in surface- and antimony-doped bismuth telluride nanoplatesMichael Thompson Pettes0Jaehyun Kim1Wei Wu2Karen C. Bustillo3Li Shi4Department of Mechanical Engineering, The University of Texas at Austin, Austin, Texas 78712, USADepartment of Mechanical Engineering, The University of Texas at Austin, Austin, Texas 78712, USADepartment of Mechanical Engineering and Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269, USANational Center for Electron Microscopy, Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USADepartment of Mechanical Engineering, The University of Texas at Austin, Austin, Texas 78712, USAWe report the in-plane thermoelectric properties of suspended (Bi1−xSbx)2Te3 nanoplates with x ranging from 0.07 to 0.95 and thicknesses ranging from 9 to 42 nm. The results presented here reveal a trend of increasing p-type behavior with increasing antimony concentration, and a maximum Seebeck coefficient and thermoelectric figure of merit at x ∼ 0.5. We additionally tuned extrinsic doping of the surface using a tetrafluoro-tetracyanoquinodimethane (F4-TCNQ) coating. The lattice thermal conductivity is found to be below that for undoped ultrathin Bi2Te3 nanoplates of comparable thickness and in the range of 0.2–0.7 W m−1 K−1 at room temperature.http://dx.doi.org/10.1063/1.4955400 |
| spellingShingle | Michael Thompson Pettes Jaehyun Kim Wei Wu Karen C. Bustillo Li Shi Thermoelectric transport in surface- and antimony-doped bismuth telluride nanoplates APL Materials |
| title | Thermoelectric transport in surface- and antimony-doped bismuth telluride nanoplates |
| title_full | Thermoelectric transport in surface- and antimony-doped bismuth telluride nanoplates |
| title_fullStr | Thermoelectric transport in surface- and antimony-doped bismuth telluride nanoplates |
| title_full_unstemmed | Thermoelectric transport in surface- and antimony-doped bismuth telluride nanoplates |
| title_short | Thermoelectric transport in surface- and antimony-doped bismuth telluride nanoplates |
| title_sort | thermoelectric transport in surface and antimony doped bismuth telluride nanoplates |
| url | http://dx.doi.org/10.1063/1.4955400 |
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