Aqueous synthesis, doping, and processing of n-type Ag₂Se for high thermoelectric performance at near-room-temperature
Herein, we have successfully synthesized binary Ag2Se, composite Ag0:Ag2Se, and ternary Cu+:Ag2Se through an ambient aqueous-solution-based approach in a one-pot reaction at room temperature and atmospheric pressure without involving high-temperature heating, multiple-processes treatment, and organi...
| Main Authors: | , , , , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2022
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/163897 |
| _version_ | 1826110427105329152 |
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| author | Tee, Si Yin Tan, Xian Yi Wang, Xizu Lee, Coryl Jing Jun Win, Khin Yin Ni, Xi Ping Teo, Siew Lang Seng, Debbie Hwee Leng Tanaka, Yuki Han, Ming-Yong |
| author2 | School of Materials Science and Engineering |
| author_facet | School of Materials Science and Engineering Tee, Si Yin Tan, Xian Yi Wang, Xizu Lee, Coryl Jing Jun Win, Khin Yin Ni, Xi Ping Teo, Siew Lang Seng, Debbie Hwee Leng Tanaka, Yuki Han, Ming-Yong |
| author_sort | Tee, Si Yin |
| collection | NTU |
| description | Herein, we have successfully synthesized binary Ag2Se, composite Ag0:Ag2Se, and ternary Cu+:Ag2Se through an ambient aqueous-solution-based approach in a one-pot reaction at room temperature and atmospheric pressure without involving high-temperature heating, multiple-processes treatment, and organic solvents/surfactants. Effective controllability over phases and compositions/components are demonstrated with feasibility for large-scale production through an exquisite alteration in reaction parameters especially pH for enhancing and understanding thermoelectric properties. Thermoelectric ZT reaches 0.8-1.1 at near-room-temperature for n-type Ag2Se and Cu+ doping further improves to 0.9-1.2 over a temperature range of 300-393 K, which is the largest compared to that reported by wet chemistry methods. This improvement is related to the enhanced electrical conductivity and the suppressed thermal conductivity due to the incorporation of Cu+ into the lattice of Ag2Se at very low concentrations (x%Cu+:Ag2Se, x = 1.0, 1.5, and 2.0). |
| first_indexed | 2024-10-01T02:34:14Z |
| format | Journal Article |
| id | ntu-10356/163897 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T02:34:14Z |
| publishDate | 2022 |
| record_format | dspace |
| spelling | ntu-10356/1638972022-12-21T06:04:03Z Aqueous synthesis, doping, and processing of n-type Ag₂Se for high thermoelectric performance at near-room-temperature Tee, Si Yin Tan, Xian Yi Wang, Xizu Lee, Coryl Jing Jun Win, Khin Yin Ni, Xi Ping Teo, Siew Lang Seng, Debbie Hwee Leng Tanaka, Yuki Han, Ming-Yong School of Materials Science and Engineering Institute of Materials Research and Engineering, A*STAR Engineering::Materials Quantum Dots Nanocrystals Herein, we have successfully synthesized binary Ag2Se, composite Ag0:Ag2Se, and ternary Cu+:Ag2Se through an ambient aqueous-solution-based approach in a one-pot reaction at room temperature and atmospheric pressure without involving high-temperature heating, multiple-processes treatment, and organic solvents/surfactants. Effective controllability over phases and compositions/components are demonstrated with feasibility for large-scale production through an exquisite alteration in reaction parameters especially pH for enhancing and understanding thermoelectric properties. Thermoelectric ZT reaches 0.8-1.1 at near-room-temperature for n-type Ag2Se and Cu+ doping further improves to 0.9-1.2 over a temperature range of 300-393 K, which is the largest compared to that reported by wet chemistry methods. This improvement is related to the enhanced electrical conductivity and the suppressed thermal conductivity due to the incorporation of Cu+ into the lattice of Ag2Se at very low concentrations (x%Cu+:Ag2Se, x = 1.0, 1.5, and 2.0). Agency for Science, Technology and Research (A*STAR) The authors acknowledge financial support from the A*STAR SERC PHAROS program under grant number 1527200023. 2022-12-21T06:04:03Z 2022-12-21T06:04:03Z 2022 Journal Article Tee, S. Y., Tan, X. Y., Wang, X., Lee, C. J. J., Win, K. Y., Ni, X. P., Teo, S. L., Seng, D. H. L., Tanaka, Y. & Han, M. (2022). Aqueous synthesis, doping, and processing of n-type Ag₂Se for high thermoelectric performance at near-room-temperature. Inorganic Chemistry, 61(17), 6451-6458. https://dx.doi.org/10.1021/acs.inorgchem.2c00060 0020-1669 https://hdl.handle.net/10356/163897 10.1021/acs.inorgchem.2c00060 35438965 2-s2.0-85128813603 17 61 6451 6458 en 1527200023 Inorganic Chemistry © 2022 American Chemical Society. All rights reserved. |
| spellingShingle | Engineering::Materials Quantum Dots Nanocrystals Tee, Si Yin Tan, Xian Yi Wang, Xizu Lee, Coryl Jing Jun Win, Khin Yin Ni, Xi Ping Teo, Siew Lang Seng, Debbie Hwee Leng Tanaka, Yuki Han, Ming-Yong Aqueous synthesis, doping, and processing of n-type Ag₂Se for high thermoelectric performance at near-room-temperature |
| title | Aqueous synthesis, doping, and processing of n-type Ag₂Se for high thermoelectric performance at near-room-temperature |
| title_full | Aqueous synthesis, doping, and processing of n-type Ag₂Se for high thermoelectric performance at near-room-temperature |
| title_fullStr | Aqueous synthesis, doping, and processing of n-type Ag₂Se for high thermoelectric performance at near-room-temperature |
| title_full_unstemmed | Aqueous synthesis, doping, and processing of n-type Ag₂Se for high thermoelectric performance at near-room-temperature |
| title_short | Aqueous synthesis, doping, and processing of n-type Ag₂Se for high thermoelectric performance at near-room-temperature |
| title_sort | aqueous synthesis doping and processing of n type ag₂se for high thermoelectric performance at near room temperature |
| topic | Engineering::Materials Quantum Dots Nanocrystals |
| url | https://hdl.handle.net/10356/163897 |
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