Journal ArticleDOI
Optimization of the thermoelectric figure of merit in the conducting polymer poly(3,4-ethylenedioxythiophene)
Olga Bubnova,Zia Ullah Khan,Abdellah Malti,Slawomir Braun,Mats Fahlman,Magnus Berggren,Xavier Crispin +6 more
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TLDR
It is shown that conducting polymers might be capable of meeting the demands of electricity production from waste heat (co-generation) and natural heat sources and to generate electricity from large volumes of warm fluids, heat exchangers must be functionalized with TEGs.Abstract:
Thermoelectric generators (TEGs) transform a heat flow into electricity. Thermoelectric materials are being investigated for electricity production from waste heat (co-generation) and natural heat sources. For temperatures below 200 °C, the best commercially available inorganic semiconductors are bismuth telluride (Bi(2)Te(3))-based alloys, which possess a figure of merit ZT close to one. Most of the recently discovered thermoelectric materials with ZT>2 exhibit one common property, namely their low lattice thermal conductivities. Nevertheless, a high ZT value is not enough to create a viable technology platform for energy harvesting. To generate electricity from large volumes of warm fluids, heat exchangers must be functionalized with TEGs. This requires thermoelectric materials that are readily synthesized, air stable, environmentally friendly and solution processable to create patterns on large areas. Here we show that conducting polymers might be capable of meeting these demands. The accurate control of the oxidation level in poly(3,4-ethylenedioxythiophene) (PEDOT) combined with its low intrinsic thermal conductivity (λ=0.37 W m(-1) K(-1)) yields a ZT=0.25 at room temperature that approaches the values required for efficient devices.read more
Citations
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Journal ArticleDOI
Engineered doping of organic semiconductors for enhanced thermoelectric efficiency
TL;DR: Reducing dopant volume is found to be as important as optimizing carrier concentration when maximizing ZT in OSCs, and this stands in sharp contrast to ISCs, for which these parameters have trade-offs.
Journal ArticleDOI
Perspectives on thermoelectrics: from fundamentals to device applications
TL;DR: In this article, Minnich et al. reviewed the progress made in thermoelectrics over the past two years on charge and heat carrier transport, strategies to improve the thermiolectric figure of merit, with new discussions on device physics and applications.
Journal ArticleDOI
Low-Bandgap Near-IR Conjugated Polymers/Molecules for Organic Electronics
Journal ArticleDOI
Organic thermoelectric materials for energy harvesting and temperature control
TL;DR: In this article, the authors discuss recent breakthroughs for organic materials with high thermoelectric figures of merit and indicate how these materials may be incorporated into new module designs that take advantage of their mechanical properties.
Perspectives on thermoelectrics: from fundamentals to device applications
TL;DR: In this article, Minnich et al. reviewed the progress made in thermoelectrics over the past two years on charge and heat carrier transport, strategies to improve the thermiolectric figure of merit, with new discussions on device physics and applications.
References
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Journal ArticleDOI
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TL;DR: A new era of complex thermoelectric materials is approaching because of modern synthesis and characterization techniques, particularly for nanoscale materials, and the strategies used to improve the thermopower and reduce the thermal conductivity are reviewed.
Journal ArticleDOI
Thin-film thermoelectric devices with high room-temperature figures of merit
TL;DR: Th thin-film thermoelectric materials are reported that demonstrate a significant enhancement in ZT at 300 K, compared to state-of-the-art bulk Bi2Te3 alloys, and the combination of performance, power density and speed achieved in these materials will lead to diverse technological applications.
Journal ArticleDOI
Poly(3,4‐ethylenedioxythiophene) and Its Derivatives: Past, Present, and Future
TL;DR: An overview of 3,4-ethylenedioxythiophene (PEDT) and its derivatives can be found in this article, along with a description of the broad array of properties accessible and a set of the more prominent applications in which they can be utilized.
BookDOI
Thermoelectrics Handbook : Macro to Nano
TL;DR: In this paper, the authors present an approach to the first-Principles Modeling of Novel Thermoelectric Materials, and Carlo Gatti, Carlo Bertini, Fausto Cargnoni, Carlo M. Gatti and Carlo A. Williams.
Journal ArticleDOI
Thermal conductivity of amorphous solids above the plateau.
David G. Cahill,Robert O. Pohl +1 more
TL;DR: In this paper, the authors measured the thermal conductivity of polymethylmethacrylate (PMMA), amorphous polymorphous polyamide, Ca-K nitrate glass, three polyamide-based glasses, and glycerol in the temperature range 30-300 K using an ac technique that eliminates errors from blackbody radiation.
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