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Please use this identifier to cite or link to this item: http://hdl.handle.net/2237/26964

Title: Fabrication of thin-film thermoelectric generators with ball lenses for conversion of near-infrared solar light
Authors: Ito, Yoshitaka
Mizoshiri, Mizue
Mikami, Masashi
Kondo, Tasuku
Sakurai, Junpei
Hata, Seiichi
Issue Date: Jun-2017
Publisher: IOP publishing
Citation: Japanese Journal of Applied Physics. v.56, n.6S1, 2017, p.06GN06
Abstract: We designed and fabricated thin-film thermoelectric generators (TEGs) with ball lenses, which separated visible light and near-infrared (NIR) solar light using a chromatic aberration. The transmitted visible light was used as daylight and the NIR light was used for thermoelectric generation. Solar light was estimated to be separated into the visible light and NIR light by a ray tracing method. 92.7% of the visible light was used as daylight and 9.9% of the NIR light was used for thermoelectric generation. Then, the temperature difference of the pn junctions of the TEG surface was 0.71 K, determined by heat conduction analysis using a finite element method. The thin-film TEGs were fabricated using lithography and deposition processes. When the solar light (A.M. 1.5) was irradiated to the TEGs, the open-circuit voltage and maximum power were 4.5 V/m^2 and 51 µW/m^2, respectively. These TEGs are expected to be used as an energy supply for Internet of Things sensors.
URI: https://doi.org/10.7567/JJAP.56.06GN06
ISSN: 0021-4922
Rights: © 2017 The Japan Society of Applied Physics
Appears in Collections:1.学術雑誌(工)

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