Mathematical model and optimization of a thin-film thermoelectric generator
Mathematical model and optimization of a thin-film thermoelectric generator
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DOI：
10.1088/2515-7655/ab4242
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发表时间：
2019-11
期刊：
影响因子：
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通讯作者：
D. Newbrook;R. Huang;Stephen P Richards;Shiva Sharma;G. Reid;A. Hector;C. H. (Kees) de Groot
中科院分区：
文献类型：
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作者：
D. Newbrook;R. Huang;Stephen P Richards;Shiva Sharma;G. Reid;A. Hector;C. H. (Kees) de Groot
物联网的蓬勃发展将增加对低功耗无线传感设备的需求。薄膜热电发电机是物联网设备的理想可持续电源，因为它们允许低维护和能源自主。本文提出了一种薄膜温差发电器的性能评估模型。通过有限元仿真验证了该模型的正确性，结果表明，增加互连线电导率和减小器件间距可以提高功率密度。还可以通过增加填充因子和降低绝缘材料的导热率来增加功率密度。在这项工作中提出了一种新的波纹薄膜热电发电机的设计，允许更高的填充因子比传统的方形设计，其中施加的最小特征尺寸的限制，是与光刻的情况下。
The thriving of the Internet of Things is set to increase the demand for low-power wireless sensing devices. Thin-film thermoelectric generators are ideal as a sustainable power source for Internet of Things devices as they allow for low maintenance and energy autonomy. This work presents a model to estimate the performance of a thin-film thermoelectric generator. Verified by finite-element method simulation, the results from the model show that increasing the interconnect electrical conductivity and reducing the device pitch increases the power density. The power density can also be increased by increasing the fill factor and reducing the thermal conductivity of the insulating materials. A new corrugated thin-film thermoelectric generator design is proposed in this work that allows for higher fill factors than conventional square designs where a limit on the minimum feature size is imposed, as is the case with photolithography.