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Article: Exceptional thermoelectric performance of a "star-like" SnSe nanotube with ultra-low thermal conductivity and a high power factor
Title | Exceptional thermoelectric performance of a "star-like" SnSe nanotube with ultra-low thermal conductivity and a high power factor |
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Authors | |
Issue Date | 2017 |
Citation | Physical Chemistry Chemical Physics, 2017, v. 19, n. 34, p. 23247-23253 How to Cite? |
Abstract | © the Owner Societies 2017. Efficient thermoelectric energy conversion is both crucial and challenging, and requires new material candidates by design. From first principles simulations, we identify that a "star-like" SnSe nanotube-with alternating dense and loose rings along the tube direction-gives rise to an ultra-low lattice thermal conductivity, 0.18 W m-1K-1at 750 K, and a large Seebeck coefficient, compared with single crystal SnSe. The power factor of the p-type SnSe nanotube reaches its maximum value of 235 μW cm-1K-2at a moderate doping level of around 1020-1021cm-3. The p-type nanotube shows better thermoelectric properties than the n-type one. The phonon anharmonic scattering rate of the SnSe nanotube is larger than that of the SnSe crystal. All of these factors lead to an exceptional figure-of-merit (ZT) value of 3.5-4.6 under the optimal conditions, compared to 0.6-2.6 for crystalline SnSe. Such a large ZT value should lead to a six-fold increase in the energy conversion efficiency to about 30%. |
Persistent Identifier | http://hdl.handle.net/10722/263080 |
ISSN | 2023 Impact Factor: 2.9 2023 SCImago Journal Rankings: 0.721 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Lin, Chensheng | - |
dc.contributor.author | Cheng, Wendan | - |
dc.contributor.author | Guo, Zhengxiao | - |
dc.contributor.author | Chai, Guoliang | - |
dc.contributor.author | Zhang, Hao | - |
dc.date.accessioned | 2018-10-08T09:29:16Z | - |
dc.date.available | 2018-10-08T09:29:16Z | - |
dc.date.issued | 2017 | - |
dc.identifier.citation | Physical Chemistry Chemical Physics, 2017, v. 19, n. 34, p. 23247-23253 | - |
dc.identifier.issn | 1463-9076 | - |
dc.identifier.uri | http://hdl.handle.net/10722/263080 | - |
dc.description.abstract | © the Owner Societies 2017. Efficient thermoelectric energy conversion is both crucial and challenging, and requires new material candidates by design. From first principles simulations, we identify that a "star-like" SnSe nanotube-with alternating dense and loose rings along the tube direction-gives rise to an ultra-low lattice thermal conductivity, 0.18 W m-1K-1at 750 K, and a large Seebeck coefficient, compared with single crystal SnSe. The power factor of the p-type SnSe nanotube reaches its maximum value of 235 μW cm-1K-2at a moderate doping level of around 1020-1021cm-3. The p-type nanotube shows better thermoelectric properties than the n-type one. The phonon anharmonic scattering rate of the SnSe nanotube is larger than that of the SnSe crystal. All of these factors lead to an exceptional figure-of-merit (ZT) value of 3.5-4.6 under the optimal conditions, compared to 0.6-2.6 for crystalline SnSe. Such a large ZT value should lead to a six-fold increase in the energy conversion efficiency to about 30%. | - |
dc.language | eng | - |
dc.relation.ispartof | Physical Chemistry Chemical Physics | - |
dc.title | Exceptional thermoelectric performance of a "star-like" SnSe nanotube with ultra-low thermal conductivity and a high power factor | - |
dc.type | Article | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1039/c7cp04508e | - |
dc.identifier.scopus | eid_2-s2.0-85028682254 | - |
dc.identifier.volume | 19 | - |
dc.identifier.issue | 34 | - |
dc.identifier.spage | 23247 | - |
dc.identifier.epage | 23253 | - |
dc.identifier.isi | WOS:000408671600066 | - |
dc.identifier.issnl | 1463-9076 | - |