纳米粘合剂推动了丝网印刷柔性热电技术的发展。

IF 45.8 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Science Pub Date : 2024-12-12 DOI:10.1126/science.ads5868

Wenyi Chen, Xiao-Lei Shi, Meng Li, Ting Liu, Yuanqing Mao, Qingyi Liu, Matthew Dargusch, Jin Zou, Gao Qing (Max) Lu, Zhi-Gang Chen

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引用次数: 0

摘要

有限的灵活性、复杂的制造工艺、高成本和性能不足是限制可穿戴电子产品和其他高端冷却应用的柔性无机热电材料的可扩展性和商业化的主要因素。我们开发了一种创新的、具有成本效益的技术，它集成了溶剂热、丝网印刷和烧结技术来生产无机柔性热电薄膜。我们的可打印薄膜，包括bi2te3纳米板作为高度取向的颗粒和纳米棒作为“纳米粘合剂”，具有优异的可打印薄膜热电性能，良好的柔韧性，可大规模制造性和低成本。我们构建了由可印刷的n型bi2te3薄膜和p型Bi0.4Sb1.6Te3薄膜组装而成的柔性热电器件，其归一化功率密度为>.3 μW cm-2 K-2，在丝网印刷器件中居最高水平。此外，该技术可以扩展到其他无机热电薄膜系统，如Ag2Se，显示出广泛的适用性。

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Nanobinders advance screen-printed flexible thermoelectrics

Limited flexibility, complex manufacturing processes, high costs, and insufficient performance are major factors restricting the scalability and commercialization of flexible inorganic thermoelectrics for wearable electronics and other high-end cooling applications. We developed an innovative, cost-effective technology that integrates solvothermal, screen-printing, and sintering techniques to produce an inorganic flexible thermoelectric film. Our printable film, comprising Bi₂Te₃-based nanoplates as highly orientated grains and Te nanorods as “nanobinders,” shows excellent thermoelectric performance for printable films, good flexibility, large-scale manufacturability, and low cost. We constructed a flexible thermoelectric device assembled by printable n-type Bi₂Te₃-based and p-type Bi_0.4Sb_1.6Te₃ films, which achieved a normalized power density of >3 μW cm⁻² K⁻², ranking among the highest in screen-printed devices. Moreover, this technology can be extended to other inorganic thermoelectric film systems, such as Ag₂Se, showing broad applicability.

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来源期刊

Science 综合性期刊-综合性期刊

CiteScore

61.10

自引率

0.90%

发文量

审稿时长

2.1 months

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