Synergistic optimization of electrical and thermal transport in n-type Bi-doped PbTe by introducing coherent nanophase Cu1.75Te
Based on the calculated results of band structures and density of states, Bi doping is used to adjust its carrier concentration in order to obtain n-type PbTe materials with high power factor. Then, coherent nanophase Cu1.75Te is in situ formed in the n-type PbTe matrix, which can simultaneously opt...
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| Format: | Article |
| Language: | English |
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Elsevier
2021-01-01
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| Series: | Journal of Materiomics |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352847820302264 |
| _version_ | 1827840134184173568 |
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| author | Chen Zhu Jian Zhang Hongwei Ming Lulu Huang Yuanyue Li Tao Chen Di Li Baoli Zhang Jingtao Xu Xiaoying Qin |
| author_facet | Chen Zhu Jian Zhang Hongwei Ming Lulu Huang Yuanyue Li Tao Chen Di Li Baoli Zhang Jingtao Xu Xiaoying Qin |
| author_sort | Chen Zhu |
| collection | DOAJ |
| description | Based on the calculated results of band structures and density of states, Bi doping is used to adjust its carrier concentration in order to obtain n-type PbTe materials with high power factor. Then, coherent nanophase Cu1.75Te is in situ formed in the n-type PbTe matrix, which can simultaneously optimize the thermal and electrical properties. As a result, at a relative lower temperature than other reports, the highest ZT value of 1.4 is obtained at 623 K for the nominal Pb0.995Bi0.005Te+0.86 wt% Cu1.75Te sample. More importantly, the ZT hold a higher value in the broad temperature; especially, ZT value is about 1.2–1.4 in the temperature range of 573–773 K, which is beneficial to the significant average ZT value ZTave ∼ 0.9 in the temperature range of 300–773 K. These results indicate that it is an effective and feasible method to enhance the thermoelectric properties via synergistic modulation of electrical and thermal transport properties by element doping and in situ coherent nanophase. |
| first_indexed | 2024-03-12T07:29:46Z |
| format | Article |
| id | doaj.art-f4d71c3f3a4e437898e0e3ee6f361dad |
| institution | Directory Open Access Journal |
| issn | 2352-8478 |
| language | English |
| last_indexed | 2024-03-12T07:29:46Z |
| publishDate | 2021-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materiomics |
| spelling | doaj.art-f4d71c3f3a4e437898e0e3ee6f361dad2023-09-02T21:53:58ZengElsevierJournal of Materiomics2352-84782021-01-0171146155Synergistic optimization of electrical and thermal transport in n-type Bi-doped PbTe by introducing coherent nanophase Cu1.75TeChen Zhu0Jian Zhang1Hongwei Ming2Lulu Huang3Yuanyue Li4Tao Chen5Di Li6Baoli Zhang7Jingtao Xu8Xiaoying Qin9Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei, 230031, China; University of Science and Technology of China, Hefei, 230026, ChinaKey Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei, 230031, China; Corresponding author.Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei, 230031, China; University of Science and Technology of China, Hefei, 230026, ChinaKey Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei, 230031, China; University of Science and Technology of China, Hefei, 230026, ChinaCollege of Microtechnology & Nanotechnology, Qingdao University, Qingdao, 266071, ChinaKey Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei, 230031, China; University of Science and Technology of China, Hefei, 230026, ChinaKey Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei, 230031, China; Corresponding author.Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei, 230031, China; Anhui University, Hefei, 230601, ChinaNingbo Ruiling Advanced Energy Materials Institute Co., Ltd, Ningbo, 315500, ChinaKey Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei, 230031, China; Corresponding author.Based on the calculated results of band structures and density of states, Bi doping is used to adjust its carrier concentration in order to obtain n-type PbTe materials with high power factor. Then, coherent nanophase Cu1.75Te is in situ formed in the n-type PbTe matrix, which can simultaneously optimize the thermal and electrical properties. As a result, at a relative lower temperature than other reports, the highest ZT value of 1.4 is obtained at 623 K for the nominal Pb0.995Bi0.005Te+0.86 wt% Cu1.75Te sample. More importantly, the ZT hold a higher value in the broad temperature; especially, ZT value is about 1.2–1.4 in the temperature range of 573–773 K, which is beneficial to the significant average ZT value ZTave ∼ 0.9 in the temperature range of 300–773 K. These results indicate that it is an effective and feasible method to enhance the thermoelectric properties via synergistic modulation of electrical and thermal transport properties by element doping and in situ coherent nanophase.http://www.sciencedirect.com/science/article/pii/S2352847820302264Thermoelectricn-type PbTeElectrical transportThermal transportNanophase |
| spellingShingle | Chen Zhu Jian Zhang Hongwei Ming Lulu Huang Yuanyue Li Tao Chen Di Li Baoli Zhang Jingtao Xu Xiaoying Qin Synergistic optimization of electrical and thermal transport in n-type Bi-doped PbTe by introducing coherent nanophase Cu1.75Te Journal of Materiomics Thermoelectric n-type PbTe Electrical transport Thermal transport Nanophase |
| title | Synergistic optimization of electrical and thermal transport in n-type Bi-doped PbTe by introducing coherent nanophase Cu1.75Te |
| title_full | Synergistic optimization of electrical and thermal transport in n-type Bi-doped PbTe by introducing coherent nanophase Cu1.75Te |
| title_fullStr | Synergistic optimization of electrical and thermal transport in n-type Bi-doped PbTe by introducing coherent nanophase Cu1.75Te |
| title_full_unstemmed | Synergistic optimization of electrical and thermal transport in n-type Bi-doped PbTe by introducing coherent nanophase Cu1.75Te |
| title_short | Synergistic optimization of electrical and thermal transport in n-type Bi-doped PbTe by introducing coherent nanophase Cu1.75Te |
| title_sort | synergistic optimization of electrical and thermal transport in n type bi doped pbte by introducing coherent nanophase cu1 75te |
| topic | Thermoelectric n-type PbTe Electrical transport Thermal transport Nanophase |
| url | http://www.sciencedirect.com/science/article/pii/S2352847820302264 |
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