Integrating Band Structure Engineering with All-Scale Hierarchical Structuring for High Thermoelectric Performance in PbTe System
Abstract
PbTe 1− x Se x ‐2%Na‐y%SrTe system is investigated and a high maximum ZT of 2.3 at 923 K for PbTe 0.85 Se 0.15 ‐2%Na‐4%SrTe is reported. This is achieved by performing electronic band structures modifications as well as all‐scale hierarchical structuring and combining the two effects. It is found that high ZTs in PbTe 0.85 Se 0.15 ‐2%Na‐4%SrTe are possible at all temperature from 300 to 873 K with an average ZT ave of 1.23. The high performance in PbTe 1− x Se x ‐2%Na‐y%SrTe can be achieved by either choosing PbTe‐2Na‐4SrTe or PbTe 0.85 Se 0.15 ‐2Na as a matrix. At room temperature the carrier mobility shows negligible variations as SrTe fraction is increased, however the lattice thermal conductivity is significantly reduced from ≈1.1 to ≈0.82 W m −1 K −1 when 5.0% SrTe is added, correspondingly, the lattice thermal conductivity at 923 K decreases from ≈0.59 to ≈0.43 W m− 1 K −1 . The power factor maxima of PbTe 1− x Se x ‐2Na‐4SrTe shift systematically to higher temperature with rising Se fractions due to bands divergence. The maximum power factors reach ≈27, ≈30, ≈31 μW cm −1 K −2 for the x = 0, 0.05,more »
- Authors:
-
- Beihang Univ., Beijing (China)
- Northwestern Univ., Evanston, IL (United States)
- South Univ. of Science and Technology of China, Shenzhen (China); Shenzhen Key Lab. of Thermoelectric Materials, Shenzhen (China)
- Tsinghua Univ., Beijing (China)
- Univ. of Hong Kong (Hong Kong)
- Publication Date:
- Research Org.:
- Energy Frontier Research Centers (EFRC) (United States). Revolutionary Materials for Solid State Energy Conversion (RMSSEC)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1397218
- Alternate Identifier(s):
- OSTI ID: 1400584
- Grant/Contract Number:
- SC0001054
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Advanced Energy Materials
- Additional Journal Information:
- Journal Volume: 7; Journal Issue: 3; Related Information: RMSSEC partners with Michigan State University (lead); University of California, Los Angeles; University of Michigan; Northwestern University; Oak Ridge National Laboratory; Ohio State University; Wayne State University; Journal ID: ISSN 1614-6832
- Publisher:
- Wiley
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE
Citation Formats
Pei, Yanling, Tan, Gangjian, Feng, Dan, Zheng, Lei, Tan, Qing, Xie, Xiaobing, Gong, Shengkai, Chen, Yue, Li, Jing-Feng, He, Jiaqing, Kanatzidis, Mercouri G., and Zhao, Li-Dong. Integrating Band Structure Engineering with All-Scale Hierarchical Structuring for High Thermoelectric Performance in PbTe System. United States: N. p., 2016.
Web. doi:10.1002/aenm.201601450.
Pei, Yanling, Tan, Gangjian, Feng, Dan, Zheng, Lei, Tan, Qing, Xie, Xiaobing, Gong, Shengkai, Chen, Yue, Li, Jing-Feng, He, Jiaqing, Kanatzidis, Mercouri G., & Zhao, Li-Dong. Integrating Band Structure Engineering with All-Scale Hierarchical Structuring for High Thermoelectric Performance in PbTe System. United States. https://doi.org/10.1002/aenm.201601450
Pei, Yanling, Tan, Gangjian, Feng, Dan, Zheng, Lei, Tan, Qing, Xie, Xiaobing, Gong, Shengkai, Chen, Yue, Li, Jing-Feng, He, Jiaqing, Kanatzidis, Mercouri G., and Zhao, Li-Dong. Wed .
"Integrating Band Structure Engineering with All-Scale Hierarchical Structuring for High Thermoelectric Performance in PbTe System". United States. https://doi.org/10.1002/aenm.201601450. https://www.osti.gov/servlets/purl/1397218.
@article{osti_1397218,
title = {Integrating Band Structure Engineering with All-Scale Hierarchical Structuring for High Thermoelectric Performance in PbTe System},
author = {Pei, Yanling and Tan, Gangjian and Feng, Dan and Zheng, Lei and Tan, Qing and Xie, Xiaobing and Gong, Shengkai and Chen, Yue and Li, Jing-Feng and He, Jiaqing and Kanatzidis, Mercouri G. and Zhao, Li-Dong},
abstractNote = {PbTe 1− x Se x ‐2%Na‐y%SrTe system is investigated and a high maximum ZT of 2.3 at 923 K for PbTe 0.85 Se 0.15 ‐2%Na‐4%SrTe is reported. This is achieved by performing electronic band structures modifications as well as all‐scale hierarchical structuring and combining the two effects. It is found that high ZTs in PbTe 0.85 Se 0.15 ‐2%Na‐4%SrTe are possible at all temperature from 300 to 873 K with an average ZT ave of 1.23. The high performance in PbTe 1− x Se x ‐2%Na‐y%SrTe can be achieved by either choosing PbTe‐2Na‐4SrTe or PbTe 0.85 Se 0.15 ‐2Na as a matrix. At room temperature the carrier mobility shows negligible variations as SrTe fraction is increased, however the lattice thermal conductivity is significantly reduced from ≈1.1 to ≈0.82 W m −1 K −1 when 5.0% SrTe is added, correspondingly, the lattice thermal conductivity at 923 K decreases from ≈0.59 to ≈0.43 W m− 1 K −1 . The power factor maxima of PbTe 1− x Se x ‐2Na‐4SrTe shift systematically to higher temperature with rising Se fractions due to bands divergence. The maximum power factors reach ≈27, ≈30, ≈31 μW cm −1 K −2 for the x = 0, 0.05, and 0.15 samples peak at 473, 573, and 623 K, respectively. The results indicate that ZT can be increased by synergistic integration of band structure engineering and all‐scale hierarchical architectures.},
doi = {10.1002/aenm.201601450},
journal = {Advanced Energy Materials},
number = 3,
volume = 7,
place = {United States},
year = {Wed Oct 12 00:00:00 EDT 2016},
month = {Wed Oct 12 00:00:00 EDT 2016}
}
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