Abstract
In the past few decades, organic thermoelectric materials/devices, which can exhibit remarkable potential in green energy conversion, have drawn great attention and interest due to their easy processing, light weight, intrinsically low thermal conductivity, and mechanical flexibility. Compared to traditional batteries, thermoelectric materials have high prospects as alternative power generators for harvesting green energy. Although crystalline inorganic semiconductors have dominated the fields of thermoelectric materials up to now, their practical applications are limited by their intrinsic fragility and high toxicity. The integration of organic polymers with inorganic nanoparticles has been widely employed to tailor the thermoelectric performance of polymers, which not only can combine the advantages of both components but also display interesting transport phenomena between organic polymers and inorganic nanoparticles. In this review, parameters affecting the thermoelectric properties of materials were briefly introduced. Some recently developed n-type and p-type thermoelectric films and related devices were illustrated along with their thermoelectric performance, methods of preparation, and future applications. This review will help beginners to quickly understand and master basic knowledge of thermoelectric materials, thus inspiring them to design and develop more efficient thermoelectric devices.
Highlights
Flexible wearable electronic devices have attracted great interest and have gradually emerged in daily life due to their light weight, easy skin attachment potential and the ability to withstand mechanical deformation [1,2,3,4,5,6,7,8]
Thermoelectric devices are playing an increasingly crucial role in harvesting green energy for future wearable electronic devices owing to the fact that they can produce energy without shifting mechanical components, guaranteeing high reliability [21,22,23,24,25,26]
The thermoelectric material efficiency is evaluated by a dimensionless figure-of merit, ZT = S2 σTκ−1, where the κ is the thermal conductivity, σ is the electrical conductivity, and S is the Seebeck coefficient [27,28,29,30]
Summary
Flexible wearable electronic devices have attracted great interest and have gradually emerged in daily life due to their light weight, easy skin attachment potential and the ability to withstand mechanical deformation [1,2,3,4,5,6,7,8]. K-doped PbTe0.7S0.3 achieves a ZT value of >2 with the temperature ranging from 673 to 923 K and developed polymer-based organic materials. Polymer-based organic thermoelectric generators, which contain unique merits conductivity of SnSe caused by anharmonicity. The author attributed the high conductivity, have been promoted as a new generation of thermoelectric candidates [53,54,55,56,57,58,59] These organic thermoelectric thermoelectric devices are still still not practically employed or applied applied owing. In our previously published polymers are both used to prepare organic thermoelectric devices,introduced but conducting polymers play the review paper, paper, carbon-based thermoelectric materials were were mainly mainly [31].
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