High-Performance Screen-Printed Thermoelectric Films on Fabrics

Abstract Printing techniques could offer a scalable approach to fabricate thermoelectric (TE) devices on flexible substrates for power generation used in wearable devices and personalized thermo-regulation. However, typical printing processes need a large concentration of binder additives, which oft...

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Autores principales:	Sunmi Shin, Rajan Kumar, Jong Wook Roh, Dong-Su Ko, Hyun-Sik Kim, Sang Il Kim, Lu Yin, Sarah M. Schlossberg, Shuang Cui, Jung-Min You, Soonshin Kwon, Jianlin Zheng, Joseph Wang, Renkun Chen
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/f833e3f7062f435e883271c540421267
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spelling	oai:doaj.org-article:f833e3f7062f435e883271c5404212672021-12-02T15:04:59ZHigh-Performance Screen-Printed Thermoelectric Films on Fabrics10.1038/s41598-017-07654-22045-2322https://doaj.org/article/f833e3f7062f435e883271c5404212672017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-07654-2https://doaj.org/toc/2045-2322Abstract Printing techniques could offer a scalable approach to fabricate thermoelectric (TE) devices on flexible substrates for power generation used in wearable devices and personalized thermo-regulation. However, typical printing processes need a large concentration of binder additives, which often render a detrimental effect on electrical transport of the printed TE layers. Here, we report scalable screen-printing of TE layers on flexible fiber glass fabrics, by rationally optimizing the printing inks consisting of TE particles (p-type Bi0.5Sb1.5Te3 or n-type Bi2Te2.7Se0.3), binders, and organic solvents. We identified a suitable binder additive, methyl cellulose, which offers suitable viscosity for printability at a very small concentration (0.45–0.60 wt.%), thus minimizing its negative impact on electrical transport. Following printing, the binders were subsequently burnt off via sintering and hot pressing. We found that the nanoscale defects left behind after the binder burnt off became effective phonon scattering centers, leading to low lattice thermal conductivity in the printed n-type material. With the high electrical conductivity and low thermal conductivity, the screen-printed TE layers showed high room-temperature ZT values of 0.65 and 0.81 for p-type and n-type, respectively.Sunmi ShinRajan KumarJong Wook RohDong-Su KoHyun-Sik KimSang Il KimLu YinSarah M. SchlossbergShuang CuiJung-Min YouSoonshin KwonJianlin ZhengJoseph WangRenkun ChenNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-9 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Sunmi Shin Rajan Kumar Jong Wook Roh Dong-Su Ko Hyun-Sik Kim Sang Il Kim Lu Yin Sarah M. Schlossberg Shuang Cui Jung-Min You Soonshin Kwon Jianlin Zheng Joseph Wang Renkun Chen High-Performance Screen-Printed Thermoelectric Films on Fabrics
description	Abstract Printing techniques could offer a scalable approach to fabricate thermoelectric (TE) devices on flexible substrates for power generation used in wearable devices and personalized thermo-regulation. However, typical printing processes need a large concentration of binder additives, which often render a detrimental effect on electrical transport of the printed TE layers. Here, we report scalable screen-printing of TE layers on flexible fiber glass fabrics, by rationally optimizing the printing inks consisting of TE particles (p-type Bi0.5Sb1.5Te3 or n-type Bi2Te2.7Se0.3), binders, and organic solvents. We identified a suitable binder additive, methyl cellulose, which offers suitable viscosity for printability at a very small concentration (0.45–0.60 wt.%), thus minimizing its negative impact on electrical transport. Following printing, the binders were subsequently burnt off via sintering and hot pressing. We found that the nanoscale defects left behind after the binder burnt off became effective phonon scattering centers, leading to low lattice thermal conductivity in the printed n-type material. With the high electrical conductivity and low thermal conductivity, the screen-printed TE layers showed high room-temperature ZT values of 0.65 and 0.81 for p-type and n-type, respectively.
format	article
author	Sunmi Shin Rajan Kumar Jong Wook Roh Dong-Su Ko Hyun-Sik Kim Sang Il Kim Lu Yin Sarah M. Schlossberg Shuang Cui Jung-Min You Soonshin Kwon Jianlin Zheng Joseph Wang Renkun Chen
author_facet	Sunmi Shin Rajan Kumar Jong Wook Roh Dong-Su Ko Hyun-Sik Kim Sang Il Kim Lu Yin Sarah M. Schlossberg Shuang Cui Jung-Min You Soonshin Kwon Jianlin Zheng Joseph Wang Renkun Chen
author_sort	Sunmi Shin
title	High-Performance Screen-Printed Thermoelectric Films on Fabrics
title_short	High-Performance Screen-Printed Thermoelectric Films on Fabrics
title_full	High-Performance Screen-Printed Thermoelectric Films on Fabrics
title_fullStr	High-Performance Screen-Printed Thermoelectric Films on Fabrics
title_full_unstemmed	High-Performance Screen-Printed Thermoelectric Films on Fabrics
title_sort	high-performance screen-printed thermoelectric films on fabrics
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/f833e3f7062f435e883271c540421267
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_version_	1718388993678114816

High-Performance Screen-Printed Thermoelectric Films on Fabrics

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