Collaborative regulation of electrical transport properties of bismuth-based telluride nanostructured materials


Bismuth telluride hex hexagonal nanosheets were synthesized by gas induced reduction method. The growth process of the spell hexagonal nanosheets was studied by adjusting the synthesis parameters, and the growth mechanism was revealed. The effect of sulfur doping on the band structure and the density of the electronic states of bismuth telluride is elucidated by theoretical calculation. Combining homogenizing glue and gas-induced reduction technology, prepared bismuth telluride nanostructured thermoelectric thin films doped with sulfur. The preparation parameters were adjusted so that the nanocrystals in the film grew parallel to the base plane and the film was uniformly dense. The formation and growth mechanism of thin films and the influence of their components and microstructure on thermoelectric transport properties were revealed. The synthesis and densification of sulfur-doped bismuth telluride hexagonal nanocrystalline sheets are used to obtain nanostructured bulk materials. The effects of sulfur content on microstructure and thermoelectric properties are discussed. Copper or bismuth nanoparticles prepared by the wet chemical method were mixed with bismuth telluride hexagonal nanosheets in a particular proportion and then densified to reveal the effect of copper or bismuth nanocrystals on the thermoelectric properties of the materials by adjusting the sintering process parameters and optimizing the composition and microstructure (including the size and orientation of nanocrystalline and the size and concentration of nanocrystalline inclusions), the electrical and acoustic transport properties of bismuth telluride-based materials were coordinated. This research will promote studying and applying bismuth telluride-based thermoelectric films and blocks. If you are looking for high quality, high purity and cost-effective bismuth telluride, or if you require the latest price of bismuth telluride, please feel free to email contact mis-asia.

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