Abstract
Nanostructured SnSe was fabricated using hydrothermal methods followed by sintering in an evacuated-and-encapsulated ampoule. The effects of reaction temperature (150–170 °C), duration (6–12 h) and sintering temperature (450–580 °C) on the electronic transport are investigated. It is found that both the electrical conductivity and thermopower of hydrothermally synthesized and nanostructured SnSe increase with temperature and follow the variable range hopping process. As a result, disorder-induced improvement of electronic transport combined with low thermal conductivity on the pressed sample face perpendicular to the pressed direction leads to zT = 0.54 at 550 K for the sample sintered at 500 °C, demonstrating a significant improvement of zT value in the intermediate temperature range for the SnSe system.
| Original language | English |
|---|---|
| Pages (from-to) | 9728-9738 |
| Number of pages | 11 |
| Journal | Journal of Materials Science |
| Volume | 52 |
| Issue number | 16 |
| DOIs | |
| Publication status | Published - 2017 Aug 1 |
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All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Mechanics of Materials
- Mechanical Engineering
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Nanostructured SnSe : hydrothermal synthesis and disorder-induced enhancement of thermoelectric properties at medium temperatures. / Chen, Wei Hao; Yang, Zong Ren; Lin, Fei Hung; Liu, Chia-Jyi.
In: Journal of Materials Science, Vol. 52, No. 16, 01.08.2017, p. 9728-9738.Research output: Contribution to journal › Article
TY - JOUR
T1 - Nanostructured SnSe
T2 - hydrothermal synthesis and disorder-induced enhancement of thermoelectric properties at medium temperatures
AU - Chen, Wei Hao
AU - Yang, Zong Ren
AU - Lin, Fei Hung
AU - Liu, Chia-Jyi
PY - 2017/8/1
Y1 - 2017/8/1
N2 - Nanostructured SnSe was fabricated using hydrothermal methods followed by sintering in an evacuated-and-encapsulated ampoule. The effects of reaction temperature (150–170 °C), duration (6–12 h) and sintering temperature (450–580 °C) on the electronic transport are investigated. It is found that both the electrical conductivity and thermopower of hydrothermally synthesized and nanostructured SnSe increase with temperature and follow the variable range hopping process. As a result, disorder-induced improvement of electronic transport combined with low thermal conductivity on the pressed sample face perpendicular to the pressed direction leads to zT = 0.54 at 550 K for the sample sintered at 500 °C, demonstrating a significant improvement of zT value in the intermediate temperature range for the SnSe system.
AB - Nanostructured SnSe was fabricated using hydrothermal methods followed by sintering in an evacuated-and-encapsulated ampoule. The effects of reaction temperature (150–170 °C), duration (6–12 h) and sintering temperature (450–580 °C) on the electronic transport are investigated. It is found that both the electrical conductivity and thermopower of hydrothermally synthesized and nanostructured SnSe increase with temperature and follow the variable range hopping process. As a result, disorder-induced improvement of electronic transport combined with low thermal conductivity on the pressed sample face perpendicular to the pressed direction leads to zT = 0.54 at 550 K for the sample sintered at 500 °C, demonstrating a significant improvement of zT value in the intermediate temperature range for the SnSe system.
UR - http://www.scopus.com/inward/record.url?scp=85018250750&partnerID=8YFLogxK
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U2 - 10.1007/s10853-017-1129-z
DO - 10.1007/s10853-017-1129-z
M3 - Article
AN - SCOPUS:85018250750
VL - 52
SP - 9728
EP - 9738
JO - Journal of Materials Science
JF - Journal of Materials Science
SN - 0022-2461
IS - 16
ER -