Abstract In4Se3 exhibits high thermoelectric performance as a typical example of semiconductors, which is a promising thermoelectric candidate for energy conversion applications. Here, InSe alloy core thermoelectric fibers with glass cladding were fabricated by a reactive molten core drawing method. The as-drawn fiber core was found to be InSe crystals as evidenced by X-ray diffraction. The In4Se3 crystals were obtained in the fiber core by annealing the as-drawn fibers. The Seebeck coefficient of the In4Se3 core fibers (−347 μV/K) was enhanced by ∼85% compared with that of the as-drawn InSe core fibers (−189 μV/K). This work constitutes a proof-of-concept that thermoelectric materials can be incorporated into fibers, which have promising applications in fiber-based thermoelectric devices.

中文翻译：

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In 4 Se 3 合金芯热电纤维

摘要 In4Se3 作为半导体的典型例子，表现出很高的热电性能，是一种很有前景的热电材料，用于能量转换应用。在这里，具有玻璃包层的 InSe 合金芯热电纤维是通过反应熔融纤芯拉制方法制造的。通过 X 射线衍射证明，拉制的纤芯是 InSe 晶体。In4Se3 晶体是通过对拉制光纤进行退火而在纤芯中获得的。In4Se3 纤芯光纤的塞贝克系数 (-347 μV/K) 与拉伸的 InSe 纤芯光纤 (-189 μV/K) 相比提高了约 85%。这项工作证明了可以将热电材料掺入纤维​​中，这在基于纤维的热电器件中具有广阔的应用前景。