p-type Bi0.4Sb1.6Te3 nanocomposites with enhanced figure of merit
We report enhanced figure of merit, ZT, in p-type Bi0.4Sb1.6Te3 nanocomposites fabricated by a rapid and high throughput method of mixing nanostructured Bi0.4Sb1.6Te3 particles obtained through melt spinning with micronsized particles obtained via solid state reaction. Due to effective scattering of...
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| Main Authors: | , , , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
2014
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/90570 http://hdl.handle.net/10220/18827 |
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| Institution: | Nanyang Technological University |
| Language: | English |
| Summary: | We report enhanced figure of merit, ZT, in p-type Bi0.4Sb1.6Te3 nanocomposites fabricated by a rapid and high throughput method of mixing nanostructured Bi0.4Sb1.6Te3 particles obtained through melt spinning with micronsized particles obtained via solid state reaction. Due to effective scattering of
phonons over a wide wavelength spectrum, low thermal conductivity, and moderately good power
factor were obtained in the nanocomposites to achieve ZT above 1.5 at room temperature. A
maximum ZT of 1.80 was attained at 43 °C for the nanocomposite consisting 40 wt %
nanoinclusions. This was a 56% increment over the bulk sample, and the highest ZT reported for
Bi2Te3-based materials. |
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