Printed Thermoelectrics

Burton, Matthew R.; Howells, Geraint; Atoyo, Jonathan; Carnie, Matthew J.

doi:10.1002/adma.202108183

Cited by 51 publications

(29 citation statements)

References 197 publications

(343 reference statements)

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“…28–33 Te is from group 16 of the periodic table and has an atomic number of 52 with an atomic mass of 127.60, which can lead to a very low thermal conductivity. 28,34 Bulk Te has a trigonal crystal lattice made up of chiral spiral chains of bonded atoms. Te atoms in the chain are combined through van der Waals force, as illustrated in Fig.…”

Section: Introductionmentioning

confidence: 99%

Tellurium/polymers for flexible thermoelectrics: status and challenges

et al. 2023

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Section: Introductionmentioning

confidence: 99%

Tellurium/polymers for flexible thermoelectrics: status and challenges

et al. 2023

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“…TE devices are usually based on arrays of n-type and p-type elements connected electrically in series and thermally in parallel. With the growing demand for automatic fabrication processes for TE devices, film-based structures and technologies are becoming increasingly attractive due to the great potential in developing IoT sensors and devices. − While film-based TE modules have limitations in terms of power generated, they offer benefits in terms of lower cost, a reduction in the quantity of starting materials, and are readily scalable through a variety of fabrication technologies, including screen-printing, deposition, plasma spray, , magnetron sputtering, and inkjet printing . Among these methods, screen-printing is particularly attractive because the facile fabrication route is readily amenable to automatic fabrication.…”

Section: Introductionmentioning

confidence: 99%

High Power Factor Nb-Doped TiO₂ Thermoelectric Thick Films: Toward Atomic Scale Defect Engineering of Crystallographic Shear Structures

Liu

Kepaptsoglou

Jakubczyk

et al. 2023

ACS Appl. Mater. Interfaces

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Donor-doped TiO2-based materials are promising thermoelectrics (TEs) due to their low cost and high stability at elevated temperatures. Herein, high-performance Nb-doped TiO2 thick films are fabricated by facile and scalable screen-printing techniques. Enhanced TE performance has been achieved by forming high-density crystallographic shear (CS) structures. All films exhibit the same matrix rutile structure but contain different nano-sized defect structures. Typically, in films with low Nb content, high concentrations of oxygen-deficient {121} CS planes are formed, while in films with high Nb content, a high density of twin boundaries are found. Through the use of strongly reducing atmospheres, a novel Al-segregated {210} CS structure is formed in films with higher Nb content. By advanced aberration-corrected scanning transmission electron microscopy techniques, we reveal the nature of the {210} CS structure at the nano-scale. These CS structures contain abundant oxygen vacancies and are believed to enable energy-filtering effects, leading to simultaneous enhancement of both the electrical conductivity and Seebeck coefficients. The optimized films exhibit a maximum power factor of 4.3 × 10–4 W m–1 K–2 at 673 K, the highest value for TiO2-based TE films at elevated temperatures. Our modulation strategy based on microstructure modification provides a novel route for atomic-level defect engineering which should guide the development of other TE materials.

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“…The screen printing process has the virtues of economy, flexibility, strong adaptability, and easy operation; additionally, the thicknesses of the as-prepared materials can be adjusted in a wide range [27][28][29][30]. The screen printing process is always used for the preparation of polymer and inorganic/polymer TE materials [31][32][33][34][35][36].…”

Section: Introductionmentioning

confidence: 99%

Flexible Thermoelectric Reduced Graphene Oxide/Ag2S/Methyl Cellulose Composite Film Prepared by Screen Printing Process

Wang

Qin

et al. 2022

Polymers

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As an organic−inorganic thermoelectric composite material, a flexible, reduced graphene oxide (rGO)/silver sulfide (Ag2S)/methyl cellulose (MC) film was fabricated by a two-step method. Firstly, a rGO/Ag2S composite powder was prepared by a chemical synthesis method, and then, the rGO/Ag2S/MC composite film was prepared by a combined screen printing and annealing treatment process. The rGO and rGO/Ag2S composite powders were evenly dispersed in the rGO/Ag2S/MC composite films. A power factor of 115 μW m−1 K−2 at 520 K was acquired for the rGO/Ag2S/MC composite film, which is ~958 times higher than the power factor at 360 K (0.12 μW m−1 K−2), mainly due to the significant increase in the electrical conductivity of the composite film from 0.006 S/cm to 210.18 S/cm as the test temperature raised from 360 K to 520 K. The as-prepared rGO/Ag2S/MC composite film has a good flexibility, which shows a huge potential for the application of flexible, wearable electronics.

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Printed Thermoelectrics

Abstract: literature surrounding printed telluride compounds has produced ZT values that are, for the most part, considerably lower.

Cited by 51 publications

References 197 publications

Tellurium/polymers for flexible thermoelectrics: status and challenges

Tellurium/polymers for flexible thermoelectrics: status and challenges

High Power Factor Nb-Doped TiO₂ Thermoelectric Thick Films: Toward Atomic Scale Defect Engineering of Crystallographic Shear Structures

Flexible Thermoelectric Reduced Graphene Oxide/Ag2S/Methyl Cellulose Composite Film Prepared by Screen Printing Process

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Printed Thermoelectrics

Abstract: literature surrounding printed telluride compounds has produced ZT values that are, for the most part, considerably lower.

Cited by 51 publications

References 197 publications

Tellurium/polymers for flexible thermoelectrics: status and challenges

Tellurium/polymers for flexible thermoelectrics: status and challenges

High Power Factor Nb-Doped TiO2 Thermoelectric Thick Films: Toward Atomic Scale Defect Engineering of Crystallographic Shear Structures

Flexible Thermoelectric Reduced Graphene Oxide/Ag2S/Methyl Cellulose Composite Film Prepared by Screen Printing Process

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High Power Factor Nb-Doped TiO₂ Thermoelectric Thick Films: Toward Atomic Scale Defect Engineering of Crystallographic Shear Structures