Enhanced thermoelectric performance of compacted Bi0.5Sb 1.5Te3 nanoplatelets with low thermal conductivity

Chia Jyi Liu; Gao Jhih Liu; Yen Liang Liu; Liang Ru Chen; Alan B. Kaiser

doi:10.1557/jmr.2011.158

Enhanced thermoelectric performance of compacted Bi_0.5Sb _1.5Te₃ nanoplatelets with low thermal conductivity

Chia Jyi Liu, Gao Jhih Liu, Yen Liang Liu, Liang Ru Chen, Alan B. Kaiser

Department of Physics

Research output: Contribution to journal › Review article

17 Citations (Scopus)

Abstract

We report fabrication of compacted Bi_0.5Sb_1.5Te ₃ nanoplatelets using hydrothermal methods followed by cold pressing and sintering in an evacuated ampoule at various temperature of 300-380 °C. The compacted Bi_0.5Sb_1.5Te₃ sintered at 340 °C has the highest power factor of 11.6 μW/cmK² and its thermal conductivity is 0.37 W/mK at 295 K, which is very low as compared to the typical value of 1 W/mK. The resulting dimensionless figure of merit ZT is 0.93 at 295 K.

Original language	English
Pages (from-to)	1755-1761
Number of pages	7
Journal	Journal of Materials Research
Volume	26
Issue number	15
DOIs	https://doi.org/10.1557/jmr.2011.158
Publication status	Published - 2011 Aug 14

All Science Journal Classification (ASJC) codes

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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title = "Enhanced thermoelectric performance of compacted Bi0.5Sb 1.5Te3 nanoplatelets with low thermal conductivity",

abstract = "We report fabrication of compacted Bi0.5Sb1.5Te 3 nanoplatelets using hydrothermal methods followed by cold pressing and sintering in an evacuated ampoule at various temperature of 300-380 °C. The compacted Bi0.5Sb1.5Te3 sintered at 340 °C has the highest power factor of 11.6 μW/cmK2 and its thermal conductivity is 0.37 W/mK at 295 K, which is very low as compared to the typical value of 1 W/mK. The resulting dimensionless figure of merit ZT is 0.93 at 295 K.",

author = "Liu, {Chia Jyi} and Liu, {Gao Jhih} and Liu, {Yen Liang} and Chen, {Liang Ru} and Kaiser, {Alan B.}",

year = "2011",

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doi = "10.1557/jmr.2011.158",

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T1 - Enhanced thermoelectric performance of compacted Bi0.5Sb 1.5Te3 nanoplatelets with low thermal conductivity

AU - Liu, Chia Jyi

AU - Liu, Gao Jhih

AU - Liu, Yen Liang

AU - Chen, Liang Ru

AU - Kaiser, Alan B.

PY - 2011/8/14

Y1 - 2011/8/14

N2 - We report fabrication of compacted Bi0.5Sb1.5Te 3 nanoplatelets using hydrothermal methods followed by cold pressing and sintering in an evacuated ampoule at various temperature of 300-380 °C. The compacted Bi0.5Sb1.5Te3 sintered at 340 °C has the highest power factor of 11.6 μW/cmK2 and its thermal conductivity is 0.37 W/mK at 295 K, which is very low as compared to the typical value of 1 W/mK. The resulting dimensionless figure of merit ZT is 0.93 at 295 K.

AB - We report fabrication of compacted Bi0.5Sb1.5Te 3 nanoplatelets using hydrothermal methods followed by cold pressing and sintering in an evacuated ampoule at various temperature of 300-380 °C. The compacted Bi0.5Sb1.5Te3 sintered at 340 °C has the highest power factor of 11.6 μW/cmK2 and its thermal conductivity is 0.37 W/mK at 295 K, which is very low as compared to the typical value of 1 W/mK. The resulting dimensionless figure of merit ZT is 0.93 at 295 K.

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