n-Type SnSe2 Oriented-Nanoplate-Based Pellets for High Thermoelectric Performance
Abstract
Abstract It is reported that electron doped n‐type SnSe 2 nanoplates show promising thermoelectric performance at medium temperatures. After simultaneous introduction of Se deficiency and Cl doping, the Fermi level of SnSe 2 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 ZT max of 0.63 is achieved for a 1.5 at% Cl doped SnSe 1.95 pellet at 673 K, which is much higher than the corresponding in‐plane ZT of pure SnSe 2 (0.08).
- Authors:
-
[3]
- Nanyang Technological Univ. (Singapore); Northwestern Univ., Evanston, IL (United States)
- Nanyang Technological Univ. (Singapore)
- Northwestern Univ., Evanston, IL (United States)
- A*STAR (Agency for Science, Technology and Research), Innovis (Singapore)
- Publication Date:
- Research Org.:
- Northwestern Univ., Evanston, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); Singapore A*STAR Pharos Program; National Research Foundation Singapore; National Natural Science Foundation of China (NSFC); Nanyang Technological Univ.
- OSTI Identifier:
- 1775340
- Alternate Identifier(s):
- OSTI ID: 1411266
- Grant/Contract Number:
- SC0014520; 1527200022; 61728401
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Advanced Energy Materials
- Additional Journal Information:
- Journal Volume: 8; Journal Issue: 8; Journal ID: ISSN 1614-6832
- Publisher:
- Wiley
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; chlorine doping; nanoplate orientation; Se deficiency; SnSe2; thermoelectric
Citation Formats
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, and Kanatzidis, Mercouri G. n-Type SnSe2 Oriented-Nanoplate-Based Pellets for High Thermoelectric Performance. United States: N. p., 2017.
Web. doi:10.1002/aenm.201702167.
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. United States. https://doi.org/10.1002/aenm.201702167
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, and Kanatzidis, Mercouri G. Mon .
"n-Type SnSe2 Oriented-Nanoplate-Based Pellets for High Thermoelectric Performance". United States. https://doi.org/10.1002/aenm.201702167. https://www.osti.gov/servlets/purl/1775340.
@article{osti_1775340,
title = {n-Type SnSe2 Oriented-Nanoplate-Based Pellets for High Thermoelectric Performance},
author = {Luo, Yubo and Zheng, Yun and Luo, Zhongzhen and Hao, Shiqiang and Du, Chengfeng and Liang, Qinghua and Li, Zhong and Khor, Khiam Aik and Hippalgaonkar, Kedar and Xu, Jianwei and Yan, Qingyu and Wolverton, Chris and Kanatzidis, Mercouri G.},
abstractNote = {Abstract It is reported that electron doped n‐type SnSe 2 nanoplates show promising thermoelectric performance at medium temperatures. After simultaneous introduction of Se deficiency and Cl doping, the Fermi level of SnSe 2 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 ZT max of 0.63 is achieved for a 1.5 at% Cl doped SnSe 1.95 pellet at 673 K, which is much higher than the corresponding in‐plane ZT of pure SnSe 2 (0.08).},
doi = {10.1002/aenm.201702167},
journal = {Advanced Energy Materials},
number = 8,
volume = 8,
place = {United States},
year = {Mon Dec 04 00:00:00 EST 2017},
month = {Mon Dec 04 00:00:00 EST 2017}
}
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