期刊
NANOMATERIALS
卷 11, 期 8, 页码 -出版社
MDPI
DOI: 10.3390/nano11082042
关键词
Ag2Se; polyvinyl pyrrolidone; screen printing; composite films; thermoelectric generator
类别
资金
- National Key Research and Development Program of China [2019YFB2004800]
- National Natural Science Foundation of China [62001428]
- Shanxi 1331 Project Key Subject Construction [1331KSC]
- Science Foundation of North University of China [XJJ201911]
- Scientific and Technological Innovation Programs of Higher Education Institutions in Shanxi [2020L0309]
- Key Research and Development Program of Shaanxi [2021G Y-295]
A flexible thermoelectric generator (F-TEG) based on screen printing of n-type Ag2Se/PVP film showed optimal thermoelectric performance at a ratio of 30:1. The F-TEG demonstrated good output voltage and power at a temperature difference of 40K, providing a simple and efficient preparation solution for environmentally friendly and wearable thermoelectric devices.
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 mu W center dot m(-1)center dot 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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