Screen-Printed Flexible Thermoelectric Device Based on Hybrid Silver Selenide/PVP Composite Films.
Screen-Printed Flexible Thermoelectric Device Based on Hybrid Silver Selenide/PVP Composite Films.
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DOI：
10.3390/nano11082042
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发表时间：
2021-08-11
期刊：
影响因子：
--
通讯作者：
Xue C
中科院分区：
文献类型：
--
作者：
Liu D;Zhao Y;Yan Z;Zhang Z;Zhang Y;Shi P;Xue C
近年来，丝网印刷法制备柔性温差发电器因其易于加工和大批量生产而受到广泛关注。在这项工作中，我们提出了一种n型Ag 2Se/聚合物聚乙烯吡咯烷酮（PVP）薄膜丝网印刷的基础上，并通过改变PVP的比例，研究了PVP对热电性能的影响。当Ag 2Se与PVP的含量比为30：1时，即，PI 30薄膜的热电性能最好。PI 30的最大功率因数（PF）为4.3 μW·m−1·K−2，在1500次弯曲循环时电导率达到初始值的81%。然后，对采用PI 30制作的薄膜温差发电器（F-TEG）进行了实际应用测试，在温差为40 K时，输出电压为21.6 mV，最大输出功率为233.3 nW。本工作证明了利用PVP结合丝网印刷制备F-TEG是一种简单、快速的方法，为开发环境友好、可穿戴的柔性热电器件提供了一种高效的制备方案。
In recent years, the preparation of flexible thermoelectric generators by screen printing has attracted wide attention due to easy processing and high-volume production. In this work, we propose an n-type Ag2Se/polymer polyvinylpyrrolidone (PVP) film based on screen printing and investigate the effect of PVP on thermoelectric performance by varying the ratio of PVP. When the content ratio of Ag2Se to PVP is 30:1, i.e., PI30, the fabricated PI30 film has the best thermoelectric property. The maximum power factor (PF) of the PI30 is 4.3 μW·m−1·K−2, and conductivity reaches 81% of its initial value at 1500 bending cycles. Then, the film thermoelectric generator (F-TEG) fabricated by PI30 is tested for practical application; the output voltage and the maximum output power are 21.6 mV and 233.3 nW at the temperature difference of 40 K, respectively. This work demonstrates that the use of PVP combined with screen printing to prepare F-TEG is a simple and rapid method, which provides an efficient preparation solution for the development of environmentally friendly and wearable flexible thermoelectric devices.
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