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Thermoelectric inks and power factor tunability in hybrid films through all solution process
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Serrano-Claumarchirant, José F., Hamawandi, Bejan, Ergül, Adem B., Cantarero, Andrés, Gómez, Clara M., Priyadarshi, Pankaj, Neophytou, Neophytos and Toprak, Muhammet S. (2022) Thermoelectric inks and power factor tunability in hybrid films through all solution process. ACS Applied Materials & Interfaces, 14 (17). pp. 19295-19303. doi:10.1021/acsami.1c24392 ISSN 1944-8244.
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WRAP-Thermoelectric-inks-and-power-factor-tunability-in-hybrid-films-through-all-solution-process-Neophytou-22.pdf - Published Version - Requires a PDF viewer. Available under License Creative Commons Attribution 4.0. Download (4Mb) | Preview |
Official URL: http://dx.doi.org/10.1021/acsami.1c24392
Abstract
Thermoelectric (TE) materials can have a strong benefit to harvest thermal energy if they can be applied to large areas without losing their performance over time. One way of achieving large-area films is through hybrid materials, where a blend of TE materials with polymers can be applied as coating. Here, we present the development of all solution-processed TE ink and hybrid films with varying contents of TE Sb2Te3 and Bi2Te3 nanomaterials, along with their characterization. Using (1-methoxy-2-propyl) acetate (MPA) as the solvent and poly (methyl methacrylate) as the durable polymer, large-area homogeneous hybrid TE films have been fabricated. The conductivity and TE power factor improve with nanoparticle volume fraction, peaking around 60–70% solid material fill factor. For larger fill factors, the conductivity drops, possibly because of an increase in the interface resistance through interface defects and reduced connectivity between the platelets in the medium. The use of dodecanethiol (DDT) as an additive in the ink formulation enabled an improvement in the electrical conductivity through modification of interfaces and the compactness of the resultant films, leading to a 4–5 times increase in the power factor for both p- and n-type hybrid TE films, respectively. The observed trends were captured by combining percolation theory with analytical resistive theory, with the above assumption of increasing interface resistance and connectivity with polymer volume reduction. The results obtained on these hybrid films open a new low-cost route to produce and implement TE coatings on a large scale, which can be ideal for driving flexible, large-area energy scavenging technologies such as personal medical devices and the IoT.
| Item Type: | Journal Article | |||||||||||||||||||||||||||
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| Subjects: | Q Science > QC Physics Q Science > QD Chemistry T Technology > TK Electrical engineering. Electronics Nuclear engineering |
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| Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | |||||||||||||||||||||||||||
| Library of Congress Subject Headings (LCSH): | Thermoelectric materials , Thermoelectricity, Nanoparticles , Thin films , Bismuth compounds, Tellurium compounds, Antimony compounds, Microwave devices | |||||||||||||||||||||||||||
| Journal or Publication Title: | ACS Applied Materials & Interfaces | |||||||||||||||||||||||||||
| Publisher: | American Chemical Society | |||||||||||||||||||||||||||
| ISSN: | 1944-8244 | |||||||||||||||||||||||||||
| Official Date: | 4 May 2022 | |||||||||||||||||||||||||||
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| Volume: | 14 | |||||||||||||||||||||||||||
| Number: | 17 | |||||||||||||||||||||||||||
| Page Range: | pp. 19295-19303 | |||||||||||||||||||||||||||
| DOI: | 10.1021/acsami.1c24392 | |||||||||||||||||||||||||||
| Status: | Peer Reviewed | |||||||||||||||||||||||||||
| Publication Status: | Published | |||||||||||||||||||||||||||
| Access rights to Published version: | Open Access (Creative Commons) | |||||||||||||||||||||||||||
| Date of first compliant deposit: | 10 May 2022 | |||||||||||||||||||||||||||
| Date of first compliant Open Access: | 11 May 2022 | |||||||||||||||||||||||||||
| RIOXX Funder/Project Grant: |
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