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Micromachines 2015, 6(10), 1560-1568; doi:10.3390/mi6101439

Manufacturing and Characterization of a Thermoelectric Energy Harvester Using the CMOS-MEMS Technology

1
Department of Mechanical Engineering, National Chung Hsing University, Taichung 402, Taiwan
2
Department of Civil and Environmental Engineering, National University of Kaohsiung, Kaohsiung 811, Taiwan
*
Author to whom correspondence should be addressed.
Academic Editor: Cheng Luo
Received: 15 September 2015 / Revised: 9 October 2015 / Accepted: 12 October 2015 / Published: 16 October 2015
(This article belongs to the Special Issue CMOS-MEMS Sensors and Devices)
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Abstract

The fabrication and characterization of a thermoelectric energy harvester using the complementary metal oxide semiconductor (CMOS)-microelectromechanical system (MEMS) technology were presented. The thermoelectric energy harvester is composed of eight circular energy harvesting cells, and each cell consists of 25 thermocouples in series. The thermocouples are made of p-type and n-type polysilicons. The output power of the energy harvester relies on the number of the thermocouples. In order to enhance the output power, the energy harvester increases the thermocouple number per area. The energy harvester requires a post-CMOS process to etch the sacrificial silicon dioxide layer and the silicon substrate to release the suspended structures of hot part. The experimental results show that the energy harvester has an output voltage per area of 0.178 mV·mm−2·K−1 and a power factor of 1.47 × 10−3 pW·mm−2·K−2. View Full-Text
Keywords: MEMS; energy harvester; thermoelectric; CMOS MEMS; energy harvester; thermoelectric; CMOS
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Peng, S.-W.; Shih, P.-J.; Dai, C.-L. Manufacturing and Characterization of a Thermoelectric Energy Harvester Using the CMOS-MEMS Technology. Micromachines 2015, 6, 1560-1568.

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