Effect of Co-Doping on Thermoelectric Properties of <i>n</i>-Type Bi<sub>2</sub>Te<sub>3</sub> Nanostructures Fabricated Using a Low-Temperature Sol-Gel Method
In this work, a novel low-temperature double solvent sol-gel method was used to fabricate (Sm, Ce, Gd) and (Sn, Se, I) co-doped at Bi and Te-sites, respectively, for Bi<sub>2</sub>Te<sub>3</sub> nanostructures. The phase-purity and high crystallinity of as-synthesized nanostr...
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MDPI AG
2021-10-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/11/10/2719 |
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| author | Syed Irfan Muhammad Aizaz Ud Din Muhammad Qaisar Manzoor Deliang Chen |
| author_facet | Syed Irfan Muhammad Aizaz Ud Din Muhammad Qaisar Manzoor Deliang Chen |
| author_sort | Syed Irfan |
| collection | DOAJ |
| description | In this work, a novel low-temperature double solvent sol-gel method was used to fabricate (Sm, Ce, Gd) and (Sn, Se, I) co-doped at Bi and Te-sites, respectively, for Bi<sub>2</sub>Te<sub>3</sub> nanostructures. The phase-purity and high crystallinity of as-synthesized nanostructures were confirmed using X-ray diffraction and high-resolution transmission electron microscopy. The nanopowders were hot-pressed by spark plasma sintering into bulk pellets for thermoelectric properties. The spark plasma sintering temperature significantly affects the Seebeck coefficient and electrical conductivity of bulk Bi<sub>2</sub>T<sub>e3</sub> pellets. The electrical conductivities of co-doped samples decrease with an increase in the temperature, but conversely, the Seebeck coefficient is linearly increasing. The power factor showed that the co-dopants enhanced the thermoelectric properties of Bi<sub>2</sub>Te<sub>3</sub> nanopowders. |
| first_indexed | 2024-03-10T06:18:50Z |
| format | Article |
| id | doaj.art-0dfa44dd218146d1bb03359856dd3d28 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-10T06:18:50Z |
| publishDate | 2021-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-0dfa44dd218146d1bb03359856dd3d282023-11-22T19:25:37ZengMDPI AGNanomaterials2079-49912021-10-011110271910.3390/nano11102719Effect of Co-Doping on Thermoelectric Properties of <i>n</i>-Type Bi<sub>2</sub>Te<sub>3</sub> Nanostructures Fabricated Using a Low-Temperature Sol-Gel MethodSyed Irfan0Muhammad Aizaz Ud Din1Muhammad Qaisar Manzoor2Deliang Chen3School of Materials Science and Engineering, Dongguan University of Technology, Dongguan 523808, ChinaSchool of Materials and Energy, Southwest University, Chongqing 400715, ChinaDepartment of Physics, Faculty of Engineering and Applied Sciences, RIPHAH International University, Islamabad 44000, PakistanSchool of Materials Science and Engineering, Dongguan University of Technology, Dongguan 523808, ChinaIn this work, a novel low-temperature double solvent sol-gel method was used to fabricate (Sm, Ce, Gd) and (Sn, Se, I) co-doped at Bi and Te-sites, respectively, for Bi<sub>2</sub>Te<sub>3</sub> nanostructures. The phase-purity and high crystallinity of as-synthesized nanostructures were confirmed using X-ray diffraction and high-resolution transmission electron microscopy. The nanopowders were hot-pressed by spark plasma sintering into bulk pellets for thermoelectric properties. The spark plasma sintering temperature significantly affects the Seebeck coefficient and electrical conductivity of bulk Bi<sub>2</sub>T<sub>e3</sub> pellets. The electrical conductivities of co-doped samples decrease with an increase in the temperature, but conversely, the Seebeck coefficient is linearly increasing. The power factor showed that the co-dopants enhanced the thermoelectric properties of Bi<sub>2</sub>Te<sub>3</sub> nanopowders.https://www.mdpi.com/2079-4991/11/10/2719Bi<sub>2</sub>Te<sub>3</sub>sol-gelelectrical conductivitySeebeck coefficient |
| spellingShingle | Syed Irfan Muhammad Aizaz Ud Din Muhammad Qaisar Manzoor Deliang Chen Effect of Co-Doping on Thermoelectric Properties of <i>n</i>-Type Bi<sub>2</sub>Te<sub>3</sub> Nanostructures Fabricated Using a Low-Temperature Sol-Gel Method Nanomaterials Bi<sub>2</sub>Te<sub>3</sub> sol-gel electrical conductivity Seebeck coefficient |
| title | Effect of Co-Doping on Thermoelectric Properties of <i>n</i>-Type Bi<sub>2</sub>Te<sub>3</sub> Nanostructures Fabricated Using a Low-Temperature Sol-Gel Method |
| title_full | Effect of Co-Doping on Thermoelectric Properties of <i>n</i>-Type Bi<sub>2</sub>Te<sub>3</sub> Nanostructures Fabricated Using a Low-Temperature Sol-Gel Method |
| title_fullStr | Effect of Co-Doping on Thermoelectric Properties of <i>n</i>-Type Bi<sub>2</sub>Te<sub>3</sub> Nanostructures Fabricated Using a Low-Temperature Sol-Gel Method |
| title_full_unstemmed | Effect of Co-Doping on Thermoelectric Properties of <i>n</i>-Type Bi<sub>2</sub>Te<sub>3</sub> Nanostructures Fabricated Using a Low-Temperature Sol-Gel Method |
| title_short | Effect of Co-Doping on Thermoelectric Properties of <i>n</i>-Type Bi<sub>2</sub>Te<sub>3</sub> Nanostructures Fabricated Using a Low-Temperature Sol-Gel Method |
| title_sort | effect of co doping on thermoelectric properties of i n i type bi sub 2 sub te sub 3 sub nanostructures fabricated using a low temperature sol gel method |
| topic | Bi<sub>2</sub>Te<sub>3</sub> sol-gel electrical conductivity Seebeck coefficient |
| url | https://www.mdpi.com/2079-4991/11/10/2719 |
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