Journal
APL MATERIALS
Volume 6, Issue 9, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.5043547
Keywords
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Funding
- European Research Council through an ERC Starting Grant [ERC-2014-STG-639526]
- EPSRC grant Centre for Advanced Materials for Integrated Energy Systems (CAM-IES) [EP/P007767/1]
- Isaac Newton Trust
- Cambridge Trust
- China Scholarship Council
- Marie Sklodowska Curie Fellowship [H2020-MSCA-IF-2015-702868]
- EPSRC [EP/P007767/1] Funding Source: UKRI
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Aerosol-jet printing allows functional materials to be printed from inks with a wide range of viscosities and constituent particle sizes onto various substrates, including the printing of organic thermoelectric materials on flexible substrates for low-grade thermal energy harvesting. However, these materials typically suffer from relatively poor thermoelectric performance, compared to traditional inorganic counterparts, due to their low Seebeck coefficient, S, and electrical conductivity, sigma . Here, we demonstrate a modified aerosol-jet printing technique that can simultaneously incorporate well-dispersed high-S Sb2Te3 nanoflakes and high-sigma multi-walled carbon nanotubes (MWCNTs) providing good inter-particle connectivity to significantly enhance the thermoelectric performance of poly(3,4-ethylenedioxythiophene) polystyrene sulfonate structures on flexible polyimide substrates. A nominal loading fraction of 85 wt. % yielded a power factor of similar to 41 mu W/mK(2), which is among the highest for printed organic-based structures. Rigorous flexing and fatigue tests were performed to confirm the robustness and stability of these aerosol-jet printed MWCNT-based thermoelectric nanocomposites. (C) 2018 Author(s).
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