Low temperature thermoelectric properties of p -type doped single-crystalline SnSe
Abstract
SnSe single crystals have been widely studied lately as a result of their record high ZT and controversial low thermal conductivity. Much research has focused on the high-temperature properties of single crystals and polycrystalline SnSe, but few studies were carried out on the low-temperature properties of doped single-crystalline SnSe. To study the mechanism of the charge carrier and phonon scattering, and to eliminate the ambiguity of the high temperature thermal conductivity measurement, here we performed low temperature transport characterization of Na-doped and Ag-doped single-crystalline SnSe by a longitudinal steady-state technique. The electronic transport property measurements suggest that Na is a more efficient p-type dopant in SnSe than Ag. In the thermal conductivity data, we observe pronounced dielectric peak around 10 K with magnitude dependent on the doping level. In the p-type doped samples, we found that our room temperature lattice thermal conductivities (>1.74 W m-1 K-1) are in general higher than those previously reported. Based on these findings, this work implies that the lattice thermal conductivity values of doped and pure single-crystalline SnSe were underestimated.
- Authors:
-
[1];
[3];
[2];
- Wuhan Univ. of Technology, Wuhan, Hubei (China). State Key Lab. of Advanced Technology for Materials Synthesis and Processing; Univ. of Michigan, Ann Arbor, MI (United States). Dept. of Physics
- Univ. of Michigan, Ann Arbor, MI (United States). Dept. of Physics
- Chongqing Univ., Chongqing (China). College of Physics
- Wuhan Univ. of Technology, Wuhan, Hubei (China). State Key Lab. of Advanced Technology for Materials Synthesis and Processing
- Publication Date:
- Research Org.:
- Univ. of Michigan, Ann Arbor, MI (United States)
- Sponsoring Org.:
- USDOE Office of Policy (OP); USDOE Office of International Affairs (IA)
- OSTI Identifier:
- 1540173
- Alternate Identifier(s):
- OSTI ID: 1431158
- Grant/Contract Number:
- PI0000012; SC-0008574
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Applied Physics Letters
- Additional Journal Information:
- Journal Volume: 112; Journal Issue: 14; Journal ID: ISSN 0003-6951
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; physics
Citation Formats
Wang, Si, Hui, Si, Peng, Kunling, Bailey, Trevor P., Liu, Wei, Yan, Yonggao, Zhou, Xiaoyuan, Tang, Xinfeng, and Uher, Ctirad. Low temperature thermoelectric properties of p -type doped single-crystalline SnSe. United States: N. p., 2018.
Web. doi:10.1063/1.5023125.
Wang, Si, Hui, Si, Peng, Kunling, Bailey, Trevor P., Liu, Wei, Yan, Yonggao, Zhou, Xiaoyuan, Tang, Xinfeng, & Uher, Ctirad. Low temperature thermoelectric properties of p -type doped single-crystalline SnSe. United States. https://doi.org/10.1063/1.5023125
Wang, Si, Hui, Si, Peng, Kunling, Bailey, Trevor P., Liu, Wei, Yan, Yonggao, Zhou, Xiaoyuan, Tang, Xinfeng, and Uher, Ctirad. Tue .
"Low temperature thermoelectric properties of p -type doped single-crystalline SnSe". United States. https://doi.org/10.1063/1.5023125. https://www.osti.gov/servlets/purl/1540173.
@article{osti_1540173,
title = {Low temperature thermoelectric properties of p -type doped single-crystalline SnSe},
author = {Wang, Si and Hui, Si and Peng, Kunling and Bailey, Trevor P. and Liu, Wei and Yan, Yonggao and Zhou, Xiaoyuan and Tang, Xinfeng and Uher, Ctirad},
abstractNote = {SnSe single crystals have been widely studied lately as a result of their record high ZT and controversial low thermal conductivity. Much research has focused on the high-temperature properties of single crystals and polycrystalline SnSe, but few studies were carried out on the low-temperature properties of doped single-crystalline SnSe. To study the mechanism of the charge carrier and phonon scattering, and to eliminate the ambiguity of the high temperature thermal conductivity measurement, here we performed low temperature transport characterization of Na-doped and Ag-doped single-crystalline SnSe by a longitudinal steady-state technique. The electronic transport property measurements suggest that Na is a more efficient p-type dopant in SnSe than Ag. In the thermal conductivity data, we observe pronounced dielectric peak around 10 K with magnitude dependent on the doping level. In the p-type doped samples, we found that our room temperature lattice thermal conductivities (>1.74 W m-1 K-1) are in general higher than those previously reported. Based on these findings, this work implies that the lattice thermal conductivity values of doped and pure single-crystalline SnSe were underestimated.},
doi = {10.1063/1.5023125},
journal = {Applied Physics Letters},
number = 14,
volume = 112,
place = {United States},
year = {Tue Apr 03 00:00:00 EDT 2018},
month = {Tue Apr 03 00:00:00 EDT 2018}
}
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