Flexible screen printed thermoelectric generator with enhanced processes and materials

Cao, Zhuo; Koukharenko, Elena; Tudor, John; Torah, Russel; Beeby, Steve

doi:10.1016/j.sna.2015.12.016

Cited by 105 publications

(83 citation statements)

References 12 publications

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“…One readily available solution to settling down the aforementioned issues would be to secure a way to maximizing the flexibility in the shape and dimension control of TE materials during the forming stage, where the well-established printing technology would best-serve the purpose14151617181920212223. However, this printing-based technology has faced at least two major challenges.…”

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confidence: 99%

High-performance shape-engineerable thermoelectric painting

et al. 2016

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Output power of thermoelectric generators depends on device engineering minimizing heat loss as well as inherent material properties. However, the device engineering has been largely neglected due to the limited flat or angular shape of devices. Considering that the surface of most heat sources where these planar devices are attached is curved, a considerable amount of heat loss is inevitable. To address this issue, here, we present the shape-engineerable thermoelectric painting, geometrically compatible to surfaces of any shape. We prepared Bi2Te3-based inorganic paints using the molecular Sb2Te3 chalcogenidometalate as a sintering aid for thermoelectric particles, with ZT values of 0.67 for n-type and 1.21 for p-type painted materials that compete the bulk values. Devices directly brush-painted onto curved surfaces produced the high output power of 4.0 mW cm−2. This approach paves the way to designing materials and devices that can be easily transferred to other applications.

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confidence: 99%

High-performance shape-engineerable thermoelectric painting

et al. 2016

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“…The optimal combination of materials and processes for the screen‐printed TE generators was Bi 2 Te 3 with binder B, Sb 2 Te 3 with binder A, Sb 2 Te 3 contact electrodes, and cold isostatic pressing of the assembly. The Seebeck coefficient, electrical resistivity, and power factor for the Bi 2 Te 3 films were −134.38 µV K −1 , 1.28 × 10 −2 Ω cm, and 1.41 µW K −2 cm −1 , respectively, while the same for the SbTe material in binder A was 103.67 µV K −1 , 5.01 × 10 −3 Ω cm, and 2.15 µW K −2 cm −1 …”

Section: Screen Printingmentioning

confidence: 95%

“…Two types of functional inks are reviewed here: multiphase solid particle dispersions and reactive precursor solutions. The first includes nanocomposite pastes with inorganic nanoparticles dispersed into a polymer matrix (e.g., bismuth telluride (Bi 2 Te 3 ) and antimony telluride (Sb 2 Te 3 ) particles in epoxy resins) and colloidal suspensions of metal or semiconductor nanoparticles in organic solvents [e.g., zinc oxide (ZnO) nanorods or silicon (Si) nanoparticles in ethylene glycol and aqueous dispersions of antimony bismuth telluride (Sb 1.5 Bi 0.5 Te 3 ) and bismuth tellurium selenide (Bi 2 Te 2.7 Se 0.3 )] . A post‐processing annealing step is needed to recover functionality of the latter type.…”

Section: Types Of Inksmentioning

confidence: 99%

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Printed thermoelectric materials and devices: Fabrication techniques, advantages, and challenges

Orrill

LeBlanc

2016

J of Applied Polymer Sci

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Thermoelectric (TE) devices enable increased efficiency and performance by converting waste heat to usable electricity or providing solid-state, localized cooling. Large-scale implementation of the technology is hindered by power conversion efficiency, manufacturing challenges, and material and system costs. Traditionally, inorganic compounds like bismuth telluride and lead telluride are used for their high performance, but they are brittle, scarce, and toxic. Organic compounds have lower power conversion efficiencies, but they are flexible, abundant, low-cost, environmentally benign, and solution-processable, making them suitable for large-scale, high-throughput manufacturing techniques such as roll-to-roll printing. Inorganic-organic hybrid composite materials can boost power conversions efficiencies while maintaining ease of processing. This review summarizes and compares four manufacturing techniques-inkjet, screen, and dispenser printing, and stereolithography-used to fabricate TE devices. Common challenges relevant to printed TE materials and devices are described, and recent research results using these techniques are also reviewed. V C 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 44256.

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“…The thermopower of the device with one pair of p–n leg was about 341 ± 4 μV K −1 at 50 °C of temperature difference. Other strategies for flexible device fabrication include RF‐sputtering 500 nm‐thick Bi 2 Te 3 and Sb 2 Te 3 films on Kapton substrate, screen‐printing Bi 1.8 Te 3 ‐Sb 2 Te 3 onto polyimide, depositing TE paste materials (Bi 2 Te 3 and Sb 2 Te 3 ) onto silk fabric or PDMS, dispense printing of Bi 0.5 Sb 1.5 Te 3 ‐Bi 2 Sb 0.3 Te 2.7 onto a polyimide film, and so on. Those devices, however, exhibited output power only in the nW scale and thus not applicable for practical applications.…”

Section: Highly Flexible Energy Harvesters For Wearable Electronicsmentioning

confidence: 99%

Energy Harvesters for Wearable and Stretchable Electronics: From Flexibility to Stretchability

et al. 2016

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The rapid advancements of wearable electronics have caused a paradigm shift in consumer electronics, and the emerging development of stretchable electronics opens a new spectrum of applications for electronic systems. Playing a critical role as the power sources for independent electronic systems, energy harvesters with high flexibility or stretchability have been the focus of research efforts over the past decade. A large number of the flexible energy harvesters developed can only operate at very low strain level (≈0.1%), and their limited flexibility impedes their application in wearable or stretchable electronics. Here, the development of highly flexible and stretchable (stretchability >15% strain) energy harvesters is reviewed with emphasis on strategies of materials synthesis, device fabrication, and integration schemes for enhanced flexibility and stretchability. Due to their particular potential applications in wearable and stretchable electronics, energy-harvesting devices based on piezoelectricity, triboelectricity, thermoelectricity, and dielectric elastomers have been largely developed and the progress is summarized. The challenges and opportunities of assembly and integration of energy harvesters into stretchable systems are also discussed.

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Flexible screen printed thermoelectric generator with enhanced processes and materials

Cited by 105 publications

References 12 publications

High-performance shape-engineerable thermoelectric painting

High-performance shape-engineerable thermoelectric painting

Printed thermoelectric materials and devices: Fabrication techniques, advantages, and challenges

Energy Harvesters for Wearable and Stretchable Electronics: From Flexibility to Stretchability

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