Preparation and Characterization of Screen-Printed Cu(2)S/PEDOT:PSS Hybrid Films for Flexible Thermoelectric Power Generator.
Preparation and Characterization of Screen-Printed Cu(2)S/PEDOT:PSS Hybrid Films for Flexible Thermoelectric Power Generator.
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DOI：
10.3390/nano12142430
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发表时间：
2022-07-15
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近年来，柔性温差发电器（f-TEG）因其能利用环境温差发电且成本低廉，在地下管网监测自供能装置中受到广泛关注。本文采用丝网印刷法制备了Cu 2S薄膜。研究了不同比例的p型Cu 2S/聚3，4-乙撑二氧噻吩-聚苯乙烯磺酸盐（PEDOT：PSS）混合物对薄膜热电性能的影响。两种材料的界面效应，在Cu 2S表面形成超导层，导致薄膜电导率随PEDOT：PSS的增加而提高。此外，由于两种材料之间过大的带隙差，塞贝克系数随着PEDOT：PSS的增加而减小。当Cu 2S与PEDOT：PSS的含量比为1：1.2时，制备的薄膜具有最佳的热电性能，最大功率因数（PF）为20.60 μW·m-1·K-1。经过1500次弯曲试验，电导率达到初始值的75%。此外，构建了由Cu 2S和Ag 2Se构成的具有扇形结构的全印刷无Te f-TEG。当温差（ΔT）为35 K时，f-TEG的输出电压为33.50 mV，最大功率为163.20 nW。因此，设想可以通过构建用于连续自供电监测的多层堆叠f-TEG来获得大的热电输出。
In recent years, flexible thermoelectric generators(f-TEG), which can generate electricity by environmental temperature difference and have low cost, have been widely concerned in self-powered energy devices for underground pipe network monitoring. This paper studied the Cu2S films by screen-printing. The effects of different proportions of p-type Cu2S/poly 3,4-ethylene dioxythiophene-polystyrene sulfonate (PEDOT:PSS) mixture on the thermoelectric properties of films were studied. The interfacial effect of the two materials, forming a superconducting layer on the surface of Cu2S, leads to the enhancement of film conductivity with the increase of PEDOT:PSS. In addition, the Seebeck coefficient decreases with the increase of PEDOT:PSS due to the excessive bandgap difference between the two materials. When the content ratio of Cu2S and PEDOT:PSS was 1:1.2, the prepared film had the optimal thermoelectric performance, with a maximum power factor (PF) of 20.60 μW·m−1·K−1. The conductivity reached 75% of the initial value after 1500 bending tests. In addition, a fully printed Te-free f-TEG with a fan-shaped structure by Cu2S and Ag2Se was constructed. When the temperature difference (ΔT) was 35 K, the output voltage of the f-TEG was 33.50 mV, and the maximum power was 163.20 nW. Thus, it is envisaged that large thermoelectric output can be obtained by building a multi-layer stacking f-TEG for continuous self-powered monitoring.
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光致增强 Cu2S 热电薄膜的功率因数
影响因子：
4.6
作者：
Lv Y;Chen J;Zheng RK;Song J;Zhang T;Li X;Shi X;Chen L
通讯作者：
Chen L
影响因子：
6.2
作者：
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影响因子：
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作者：
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DOI：
10.3390/nano11082042
发表时间：
2021-08-11
期刊：
Nanomaterials (Basel, Switzerland)
影响因子：
--
作者：
Liu D;Zhao Y;Yan Z;Zhang Z;Zhang Y;Shi P;Xue C
通讯作者：
Xue C
影响因子：
27.8
作者：
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通讯作者：
Martin-Gonzalez, Marisol