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Cu-Embedded SnSe(2) with a High Figure of Merit at Ecofriendly Temperature

[Image: see text] There are many studies concentrated on high-temperature performance of SnSe(2), but few studies were conducted on low-temperature properties of embedded SnSe(2). In this work, a series of SnCu(x)Se(2) (x = 0, 0.01, 0.02, and 0.05) layered structures have been successfully synthesiz...

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Autores principales: Wang, Jiahao, Jia, Xianbin, Lou, Shiyun, Li, Guihui, Zhou, Shaomin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2020
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7271365/
https://www.ncbi.nlm.nih.gov/pubmed/32548425
http://dx.doi.org/10.1021/acsomega.0c01160
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author Wang, Jiahao
Jia, Xianbin
Lou, Shiyun
Li, Guihui
Zhou, Shaomin
author_facet Wang, Jiahao
Jia, Xianbin
Lou, Shiyun
Li, Guihui
Zhou, Shaomin
author_sort Wang, Jiahao
collection PubMed
description [Image: see text] There are many studies concentrated on high-temperature performance of SnSe(2), but few studies were conducted on low-temperature properties of embedded SnSe(2). In this work, a series of SnCu(x)Se(2) (x = 0, 0.01, 0.02, and 0.05) layered structures have been successfully synthesized by a melt quenching, mechanical milling process, and spark plasma sintering (SPS) method. Meanwhile, the thermal and electrical transport properties of all synthesized samples are measured. These results suggest that the embedding of Cu into SnSe(2) results in a high carrier concentration (10(19)/cm(3)). In addition, the enhancement of defect and interfacial phonon scattering caused by Cu embedding as well as the weak van der Waals force between layers makes a low thermal conductivity (0.81 W/mK) for the SnCu(0.01)Se(2) at 300 K. Moreover, the maximum ZT is acquired up to 0.75 for the SnCu(0.01)Se(2) sample at 300 K, which is about 2 orders of magnitude higher than the pristine sample (0.009). These features indicate that Cu-embedded SnSe(2) can be a promising thermoelectric material at gentle temperature.
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spelling pubmed-72713652020-06-15 Cu-Embedded SnSe(2) with a High Figure of Merit at Ecofriendly Temperature Wang, Jiahao Jia, Xianbin Lou, Shiyun Li, Guihui Zhou, Shaomin ACS Omega [Image: see text] There are many studies concentrated on high-temperature performance of SnSe(2), but few studies were conducted on low-temperature properties of embedded SnSe(2). In this work, a series of SnCu(x)Se(2) (x = 0, 0.01, 0.02, and 0.05) layered structures have been successfully synthesized by a melt quenching, mechanical milling process, and spark plasma sintering (SPS) method. Meanwhile, the thermal and electrical transport properties of all synthesized samples are measured. These results suggest that the embedding of Cu into SnSe(2) results in a high carrier concentration (10(19)/cm(3)). In addition, the enhancement of defect and interfacial phonon scattering caused by Cu embedding as well as the weak van der Waals force between layers makes a low thermal conductivity (0.81 W/mK) for the SnCu(0.01)Se(2) at 300 K. Moreover, the maximum ZT is acquired up to 0.75 for the SnCu(0.01)Se(2) sample at 300 K, which is about 2 orders of magnitude higher than the pristine sample (0.009). These features indicate that Cu-embedded SnSe(2) can be a promising thermoelectric material at gentle temperature. American Chemical Society 2020-05-19 /pmc/articles/PMC7271365/ /pubmed/32548425 http://dx.doi.org/10.1021/acsomega.0c01160 Text en Copyright © 2020 American Chemical Society This is an open access article published under an ACS AuthorChoice License (http://pubs.acs.org/page/policy/authorchoice_termsofuse.html) , which permits copying and redistribution of the article or any adaptations for non-commercial purposes.
spellingShingle Wang, Jiahao
Jia, Xianbin
Lou, Shiyun
Li, Guihui
Zhou, Shaomin
Cu-Embedded SnSe(2) with a High Figure of Merit at Ecofriendly Temperature
title Cu-Embedded SnSe(2) with a High Figure of Merit at Ecofriendly Temperature
title_full Cu-Embedded SnSe(2) with a High Figure of Merit at Ecofriendly Temperature
title_fullStr Cu-Embedded SnSe(2) with a High Figure of Merit at Ecofriendly Temperature
title_full_unstemmed Cu-Embedded SnSe(2) with a High Figure of Merit at Ecofriendly Temperature
title_short Cu-Embedded SnSe(2) with a High Figure of Merit at Ecofriendly Temperature
title_sort cu-embedded snse(2) with a high figure of merit at ecofriendly temperature
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7271365/
https://www.ncbi.nlm.nih.gov/pubmed/32548425
http://dx.doi.org/10.1021/acsomega.0c01160
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