Room-Temperature Fabrication of a Flexible Thermoelectric Generator Using a Dry-Spray Deposition System

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• 作者：Dae-Seob Song ; Jung-Oh Choi ; Sung-Hoon Ahn
• 关键词：Nano ; particle deposition system ; flexible thermoelectric generator ; dry ; spray deposition ; room temperature
• 刊名：Journal of Electronic Materials
• 出版年：2016
• 出版时间：April 2016
• 年：2016
• 卷：45
• 期：4
• 页码：2286-2290
• 全文大小：1,353 KB
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• 作者单位：Dae-Seob Song (1)
  Jung-Oh Choi (1)
  Sung-Hoon Ahn (1) (2)
  
  1. Department of Mechanical and Aerospace Engineering, Seoul National University, Seoul, South Korea
  2. Institute of Advanced Machinery and Design, Seoul, South Korea
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Optical and Electronic Materials
  Characterization and Evaluation Materials
  Electronics, Microelectronics and Instrumentation
  Solid State Physics and Spectroscopy
  
• 出版者：Springer Boston
• ISSN：1543-186X

文摘

We present a flexible thermoelectric (TE) generator with titanium dioxide (TiO₂), antimony (Sb), and tellurium (Te) powders fabricated by a nanoparticle deposition system (NPDS). NPDS is a novel low-energy consumption dry-spray method that enables the deposition of inorganic materials on substrates at room temperature and under low vacuum. TiO₂ nanopowders were dispersed on a TE powder for improved adhesion between TE films and the substrate. Film morphologies were investigated using field-emission scanning electron microscopy, and the phase structure was analyzed by x-ray diffraction. A TE leg, deposited with 3 wt.% TiO₂ content, had the largest Seebeck coefficient of approximately 160 μV/K. The prototype TE generator consisted of 16 TE legs linked by silver interconnects over an area of 20 mm × 60 mm. The prototype produced a voltage of 48.91 mV and a maximum power output of 0.18 μW from a temperature gradient of 20 K. The values are comparable to that of conventional methods. These results suggest that flexible TE generators can be fabricated by energy efficient methods, although internal and contact resistances must be decreased.