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Title: Super Large Sn1–xSe Single Crystals with Excellent Thermoelectric Performance

Abstract

SnSe single crystals have drawn extensive attention for their ultralow thermal conductivity and outstanding thermoelectric performance. In our paper, we report super large Sn1–xSe single crystals with excellent thermoelectric properties, fabricated via an advanced horizontal Bridgman technique with great yield and high reproducibility. The obtained single crystals have a super large size of ~70 × 50 × 15 mm with a considerable weight of 148 g, which leads to a record-high mass density of >6.1 g cm–3. Extensive chemical characterization demonstrates that ~0.3% Sn vacancies are present, which results in a large concentration of holes, ~1.2 × 1019 cm–3, and an enhanced power factor of ~6.1 μW cm–1 K–2 at 793 K. Simultaneously, the Sn-vacancy-induced lattice distortions result in a low thermal conductivity of ~0.39 W m–1 K–1 at 793 K, leading to a competitive ZT of ~1.24. This work demonstrates that large-size off-stoichiometric SnSe single crystals hold promise to achieve high thermoelectric performance.

Authors:
 [1]; ORCiD logo [2]; ORCiD logo [3];  [2]; ORCiD logo [4];  [3];  [5];  [6];  [4]; ORCiD logo [7]; ORCiD logo [8]
  1. Shanghai Dianji Univ., Shanghai (China). College of Materials; Chinese Academy of Sciences (CAS), Ningbo (China). Ningbo Inst. of Materials Technology and Engineering
  2. Univ. of Queensland, Brisbane (Australia). Materials Engineering
  3. Vanderbilt Univ., Nashville, TN (United States). Dept. of Physics and Astronomy and Dept. of Electrical Engineering and Computer Science; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS)
  4. Univ. of Wollongong, Wollongon (Australia). Australian Inst. for Innovative Materials (AIIM), Inst. for Superconducting and Electronic Materials (ISEM)
  5. Chinese Academy of Sciences (CAS), Ningbo (China). Ningbo Inst. of Materials Technology and Engineering
  6. Shanghai Dianji Univ., Shanghai (China). College of Materials
  7. Univ. of Queensland, Brisbane (Australia). Materials Engineering and Centre for Microscopy and Microanalysis
  8. Univ. of Queensland, Brisbane (Australia). Materials Engineering; Univ. of Southern Queensland, Springfield (Australia). Centre for Future Materials
Publication Date:
Research Org.:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). Materials Project; Vanderbilt Univ., Nashville, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1542275
Alternate Identifier(s):
OSTI ID: 1597922
Grant/Contract Number:  
FG0209ER46554; AC02-05CH11231; FG02-09ER46554
Resource Type:
Accepted Manuscript
Journal Name:
ACS Applied Materials and Interfaces
Additional Journal Information:
Journal Volume: 11; Journal Issue: 8; Journal ID: ISSN 1944-8244
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; thermoelectric; tin selenide; single crystal; characterizations; first-principles calculations

Citation Formats

Jin, Min, Shi, Xiao-Lei, Feng, Tianli, Liu, Weidi, Feng, Haifeng, Pantelides, Sokrates T., Jiang, Jun, Chen, Yunxia, Du, Yi, Zou, Jin, and Chen, Zhi-Gang. Super Large Sn1–xSe Single Crystals with Excellent Thermoelectric Performance. United States: N. p., 2019. Web. doi:10.1021/acsami.8b21699.
Jin, Min, Shi, Xiao-Lei, Feng, Tianli, Liu, Weidi, Feng, Haifeng, Pantelides, Sokrates T., Jiang, Jun, Chen, Yunxia, Du, Yi, Zou, Jin, & Chen, Zhi-Gang. Super Large Sn1–xSe Single Crystals with Excellent Thermoelectric Performance. United States. https://doi.org/10.1021/acsami.8b21699
Jin, Min, Shi, Xiao-Lei, Feng, Tianli, Liu, Weidi, Feng, Haifeng, Pantelides, Sokrates T., Jiang, Jun, Chen, Yunxia, Du, Yi, Zou, Jin, and Chen, Zhi-Gang. Tue . "Super Large Sn1–xSe Single Crystals with Excellent Thermoelectric Performance". United States. https://doi.org/10.1021/acsami.8b21699. https://www.osti.gov/servlets/purl/1542275.
@article{osti_1542275,
title = {Super Large Sn1–xSe Single Crystals with Excellent Thermoelectric Performance},
author = {Jin, Min and Shi, Xiao-Lei and Feng, Tianli and Liu, Weidi and Feng, Haifeng and Pantelides, Sokrates T. and Jiang, Jun and Chen, Yunxia and Du, Yi and Zou, Jin and Chen, Zhi-Gang},
abstractNote = {SnSe single crystals have drawn extensive attention for their ultralow thermal conductivity and outstanding thermoelectric performance. In our paper, we report super large Sn1–xSe single crystals with excellent thermoelectric properties, fabricated via an advanced horizontal Bridgman technique with great yield and high reproducibility. The obtained single crystals have a super large size of ~70 × 50 × 15 mm with a considerable weight of 148 g, which leads to a record-high mass density of >6.1 g cm–3. Extensive chemical characterization demonstrates that ~0.3% Sn vacancies are present, which results in a large concentration of holes, ~1.2 × 1019 cm–3, and an enhanced power factor of ~6.1 μW cm–1 K–2 at 793 K. Simultaneously, the Sn-vacancy-induced lattice distortions result in a low thermal conductivity of ~0.39 W m–1 K–1 at 793 K, leading to a competitive ZT of ~1.24. This work demonstrates that large-size off-stoichiometric SnSe single crystals hold promise to achieve high thermoelectric performance.},
doi = {10.1021/acsami.8b21699},
journal = {ACS Applied Materials and Interfaces},
number = 8,
volume = 11,
place = {United States},
year = {Tue Feb 05 00:00:00 EST 2019},
month = {Tue Feb 05 00:00:00 EST 2019}
}

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Works referencing / citing this record:

High‐Performance Thermoelectric SnSe: Aqueous Synthesis, Innovations, and Challenges
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