Abstract
We report thermoelectric characterization of Bi2-xSb xTe3 (x = 0.5, 1.0, and 1.5) synthesized by a solvothermal method using DMF as solvent. For Bi2Te3, the size of the edge and thickness of the hexagonal nanoplatelets are 200-250 nm and 20-25 nm, respectively. Bi2Te3 nanosheets appear to grow epitaxially from the surface of the Te tubes, which forms in the first step and acts as the template for the formation of the nanostructure. Upon doping with Sb, the morphology of Bi1.5Sb0.5Te3 changes to a cluster of nanoparticles with the size of ∼100 nm. The morphology of Bi 0.5Sb1.5Te3 consists of mainly nanoplatelets with a size of less than 100 nm and warped nanosheets growing along the Te tube. The nominal composition of Bi2Te3 mats containing sheet-tubes shows a negative thermopower of ca. -94 μV/K at 280 K, whereas Bi0.5Sb1.5Te3 shows a positive thermopower of ca. 200 μV/K at 280 K.
| Original language | English |
|---|---|
| Title of host publication | Proceedings ICT'07 - 26th International Conference on Thermoelectrics |
| Pages | 30-33 |
| Number of pages | 4 |
| DOIs | |
| Publication status | Published - 2007 Dec 1 |
| Event | ICT'07 - 26th International Conference on Thermoelectrics - Jeju, Korea, Republic of Duration: 2007 Jun 3 → 2007 Jun 7 |
Other
| Other | ICT'07 - 26th International Conference on Thermoelectrics |
|---|---|
| Country | Korea, Republic of |
| City | Jeju |
| Period | 07-06-03 → 07-06-07 |
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All Science Journal Classification (ASJC) codes
- Engineering(all)
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Thermoelectric characteristics of solvothermally prepared (Bi,Sb) 2Te3 mats containing nanosize of sheet-tubes. / Liu, Chia Jyi; Liu, Gao Jhih; Tsao, Chun Wei; Lu, Yu Feng; Chang, Li Shin.
Proceedings ICT'07 - 26th International Conference on Thermoelectrics. 2007. p. 30-33 4569416.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
TY - GEN
T1 - Thermoelectric characteristics of solvothermally prepared (Bi,Sb) 2Te3 mats containing nanosize of sheet-tubes
AU - Liu, Chia Jyi
AU - Liu, Gao Jhih
AU - Tsao, Chun Wei
AU - Lu, Yu Feng
AU - Chang, Li Shin
PY - 2007/12/1
Y1 - 2007/12/1
N2 - We report thermoelectric characterization of Bi2-xSb xTe3 (x = 0.5, 1.0, and 1.5) synthesized by a solvothermal method using DMF as solvent. For Bi2Te3, the size of the edge and thickness of the hexagonal nanoplatelets are 200-250 nm and 20-25 nm, respectively. Bi2Te3 nanosheets appear to grow epitaxially from the surface of the Te tubes, which forms in the first step and acts as the template for the formation of the nanostructure. Upon doping with Sb, the morphology of Bi1.5Sb0.5Te3 changes to a cluster of nanoparticles with the size of ∼100 nm. The morphology of Bi 0.5Sb1.5Te3 consists of mainly nanoplatelets with a size of less than 100 nm and warped nanosheets growing along the Te tube. The nominal composition of Bi2Te3 mats containing sheet-tubes shows a negative thermopower of ca. -94 μV/K at 280 K, whereas Bi0.5Sb1.5Te3 shows a positive thermopower of ca. 200 μV/K at 280 K.
AB - We report thermoelectric characterization of Bi2-xSb xTe3 (x = 0.5, 1.0, and 1.5) synthesized by a solvothermal method using DMF as solvent. For Bi2Te3, the size of the edge and thickness of the hexagonal nanoplatelets are 200-250 nm and 20-25 nm, respectively. Bi2Te3 nanosheets appear to grow epitaxially from the surface of the Te tubes, which forms in the first step and acts as the template for the formation of the nanostructure. Upon doping with Sb, the morphology of Bi1.5Sb0.5Te3 changes to a cluster of nanoparticles with the size of ∼100 nm. The morphology of Bi 0.5Sb1.5Te3 consists of mainly nanoplatelets with a size of less than 100 nm and warped nanosheets growing along the Te tube. The nominal composition of Bi2Te3 mats containing sheet-tubes shows a negative thermopower of ca. -94 μV/K at 280 K, whereas Bi0.5Sb1.5Te3 shows a positive thermopower of ca. 200 μV/K at 280 K.
UR - http://www.scopus.com/inward/record.url?scp=51849116881&partnerID=8YFLogxK
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U2 - 10.1109/ICT.2007.4569416
DO - 10.1109/ICT.2007.4569416
M3 - Conference contribution
AN - SCOPUS:51849116881
SN - 9781424422623
SP - 30
EP - 33
BT - Proceedings ICT'07 - 26th International Conference on Thermoelectrics
ER -