Abstract Currently, thermoelectric devices are receiving an immense attention from the renewable energy community due to their environment friendliness. We report a single step facile arc-melting method for developing Cu2Se thermoelectric material, which eliminates the need of expensive and time taking sintering process. The structural and thermoelectric properties measurement indicates that the proposed method is an alternative to the other reported methods for instance ball-milling followed by spark plasma sintering (SPS) with a great improvement in their efficiency. Based upon the optimized power factor and decreased total thermal conductivity, a higher figure-of-merit (ZT) value of 1.46 at 873 K was obtained from the arc-melted sample which is about 70% larger than that of its counterpart prepared through ball-milling followed by SPS process. This remarkable enhancement in the ZT value through a facile synthesis method opens up an avenue for cheaper and fast processing of Cu2Se and related materials.

中文翻译：

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一步快速合成具有增强热电性能的 Cu2Se

摘要 目前，热电装置因其环境友好性而受到可再生能源界的极大关注。我们报告了一种用于开发 Cu2Se 热电材料的单步简便电弧熔化方法，该方法无需昂贵且耗时的烧结过程。结构和热电性能测量表明，所提出的方法是其他报道的方法的替代方法，例如球磨和放电等离子烧结 (SPS)，其效率有了很大的提高。基于优化的功率因数和降低的总热导率，电弧熔化样品在 873 K 时获得了 1.46 的更高品质因数 (ZT) 值，比其通过球制备的对应物大约 70% - 铣削，然后是 SPS 工艺。