N‐type SnSe2 oriented‐nanoplate‐based pellets for high thermoelectric performance
It is reported that electron doped n-type SnSe2 nanoplates show promising thermoelectric performance at medium temperatures. After simultaneous introduction of Se deficiency and Cl doping, the Fermi level of SnSe2 shifts toward the conduction band, resulting in two orders of magnitude increase in ca...
| Main Authors: | , , , , , , , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2020
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/139265 |
| _version_ | 1826122998834266112 |
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| author | Luo, Yubo Zheng, Yun Luo, Zhongzhen Hao, Shiqiang Du, Chengfeng Liang, Qinghua Li, Zhong Khor, Khiam Aik Hippalgaonkar, Kedar Xu, Jianwei Yan, Qingyu Wolverton, Chris Kanatzidis, Mercouri G. |
| author2 | School of Materials Science & Engineering |
| author_facet | School of Materials Science & Engineering Luo, Yubo Zheng, Yun Luo, Zhongzhen Hao, Shiqiang Du, Chengfeng Liang, Qinghua Li, Zhong Khor, Khiam Aik Hippalgaonkar, Kedar Xu, Jianwei Yan, Qingyu Wolverton, Chris Kanatzidis, Mercouri G. |
| author_sort | Luo, Yubo |
| collection | NTU |
| description | It is reported that electron doped n-type SnSe2 nanoplates show promising thermoelectric performance at medium temperatures. After simultaneous introduction of Se deficiency and Cl doping, the Fermi level of SnSe2 shifts toward the conduction band, resulting in two orders of magnitude increase in carrier concentration and a transition to degenerate transport behavior. In addition, all-scale hierarchical phonon scattering centers, such as point defects, nanograin boundaries, stacking faults, and the layered nanostructures, cooperate to produce very low lattice thermal conductivity. As a result, an enhanced in-plane thermoelectric figure of merit ZTmax of 0.63 is achieved for a 1.5 at% Cl doped SnSe1.95 pellet at 673 K, which is much higher than the corresponding in-plane ZT of pure SnSe2 (0.08). |
| first_indexed | 2024-10-01T05:57:26Z |
| format | Journal Article |
| id | ntu-10356/139265 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:57:26Z |
| publishDate | 2020 |
| record_format | dspace |
| spelling | ntu-10356/1392652020-06-01T10:21:12Z N‐type SnSe2 oriented‐nanoplate‐based pellets for high thermoelectric performance Luo, Yubo Zheng, Yun Luo, Zhongzhen Hao, Shiqiang Du, Chengfeng Liang, Qinghua Li, Zhong Khor, Khiam Aik Hippalgaonkar, Kedar Xu, Jianwei Yan, Qingyu Wolverton, Chris Kanatzidis, Mercouri G. School of Materials Science & Engineering School of Mechanical and Aerospace Engineering Engineering::Materials Chlorine Doping Nanoplate Orientation It is reported that electron doped n-type SnSe2 nanoplates show promising thermoelectric performance at medium temperatures. After simultaneous introduction of Se deficiency and Cl doping, the Fermi level of SnSe2 shifts toward the conduction band, resulting in two orders of magnitude increase in carrier concentration and a transition to degenerate transport behavior. In addition, all-scale hierarchical phonon scattering centers, such as point defects, nanograin boundaries, stacking faults, and the layered nanostructures, cooperate to produce very low lattice thermal conductivity. As a result, an enhanced in-plane thermoelectric figure of merit ZTmax of 0.63 is achieved for a 1.5 at% Cl doped SnSe1.95 pellet at 673 K, which is much higher than the corresponding in-plane ZT of pure SnSe2 (0.08). NRF (Natl Research Foundation, S’pore) ASTAR (Agency for Sci., Tech. and Research, S’pore) MOE (Min. of Education, S’pore) 2020-05-18T07:32:20Z 2020-05-18T07:32:20Z 2017 Journal Article Luo, Y., Zheng, Y., Luo, Z., Hao, S., Du, C., Liang, Q., . . . Kanatzidis, M. G. (2018). N‐type SnSe2 oriented‐nanoplate‐based pellets for high thermoelectric performance. Advanced Energy Materials, 8(8), 1702167-. doi:10.1002/aenm.201702167 1614-6832 https://hdl.handle.net/10356/139265 10.1002/aenm.201702167 2-s2.0-85037665864 8 8 en Advanced Energy Materials © 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. All rights reserved. |
| spellingShingle | Engineering::Materials Chlorine Doping Nanoplate Orientation Luo, Yubo Zheng, Yun Luo, Zhongzhen Hao, Shiqiang Du, Chengfeng Liang, Qinghua Li, Zhong Khor, Khiam Aik Hippalgaonkar, Kedar Xu, Jianwei Yan, Qingyu Wolverton, Chris Kanatzidis, Mercouri G. N‐type SnSe2 oriented‐nanoplate‐based pellets for high thermoelectric performance |
| title | N‐type SnSe2 oriented‐nanoplate‐based pellets for high thermoelectric performance |
| title_full | N‐type SnSe2 oriented‐nanoplate‐based pellets for high thermoelectric performance |
| title_fullStr | N‐type SnSe2 oriented‐nanoplate‐based pellets for high thermoelectric performance |
| title_full_unstemmed | N‐type SnSe2 oriented‐nanoplate‐based pellets for high thermoelectric performance |
| title_short | N‐type SnSe2 oriented‐nanoplate‐based pellets for high thermoelectric performance |
| title_sort | n type snse2 oriented nanoplate based pellets for high thermoelectric performance |
| topic | Engineering::Materials Chlorine Doping Nanoplate Orientation |
| url | https://hdl.handle.net/10356/139265 |
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