Thermoelectric characteristics of solvothermally prepared (Bi,Sb) 2Te3 mats containing nanosize of sheet-tubes

Chia Jyi Liu; Gao Jhih Liu; Chun Wei Tsao; Yu Feng Lu; Li Shin Chang

doi:10.1109/ICT.2007.4569416

Thermoelectric characteristics of solvothermally prepared (Bi,Sb) ₂Te₃ mats containing nanosize of sheet-tubes

Chia Jyi Liu, Gao Jhih Liu, Chun Wei Tsao, Yu Feng Lu, Li Shin Chang

Department of Physics

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

4 Citations (Scopus)

Abstract

We report thermoelectric characterization of Bi_2-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 Bi_1.5Sb_0.5Te₃ changes to a cluster of nanoparticles with the size of ∼100 nm. The morphology of Bi _0.5Sb_1.5Te₃ 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 Bi_0.5Sb_1.5Te₃ 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	https://doi.org/10.1109/ICT.2007.4569416
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

All Science Journal Classification (ASJC) codes

Engineering(all)

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Liu, C. J., Liu, G. J., Tsao, C. W., Lu, Y. F., & Chang, L. S. (2007). Thermoelectric characteristics of solvothermally prepared (Bi,Sb) ₂Te₃ mats containing nanosize of sheet-tubes. In Proceedings ICT'07 - 26th International Conference on Thermoelectrics (pp. 30-33). [4569416] https://doi.org/10.1109/ICT.2007.4569416

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title = "Thermoelectric characteristics of solvothermally prepared (Bi,Sb) 2Te3 mats containing nanosize of sheet-tubes",

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.",

author = "Liu, {Chia Jyi} and Liu, {Gao Jhih} and Tsao, {Chun Wei} and Lu, {Yu Feng} and Chang, {Li Shin}",

year = "2007",

month = dec,

day = "1",

doi = "10.1109/ICT.2007.4569416",

language = "English",

isbn = "9781424422623",

pages = "30--33",

booktitle = "Proceedings ICT'07 - 26th International Conference on Thermoelectrics",

note = "ICT'07 - 26th International Conference on Thermoelectrics ; Conference date: 03-06-2007 Through 07-06-2007",

}

Liu, CJ, Liu, GJ, Tsao, CW, Lu, YF & Chang, LS 2007, Thermoelectric characteristics of solvothermally prepared (Bi,Sb) ₂Te₃ mats containing nanosize of sheet-tubes. in Proceedings ICT'07 - 26th International Conference on Thermoelectrics., 4569416, pp. 30-33, ICT'07 - 26th International Conference on Thermoelectrics, Jeju, Korea, Republic of, 07-06-03. https://doi.org/10.1109/ICT.2007.4569416

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.

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BT - Proceedings ICT'07 - 26th International Conference on Thermoelectrics

T2 - ICT'07 - 26th International Conference on Thermoelectrics

Y2 - 3 June 2007 through 7 June 2007

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