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Proceedings Paper

Cooling-free infrared sensors with high-performance thermoelectric materials
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Paper Abstract

For making a high-performance thermopile, which is a kind of cooling-free infrared sensor and composed of thermoelectric materials and capable of detecting infrared rays without electric power, we developed Si-Ge thin film thermoelectric materials. The thermal conductivity of the Si-Ge thermoelectric material was successfully reduced to 1 Wm-1K-1 by making use of nano-structuring. Besides, its Seebeck coefficient was effectively increased by a multi element doping technique. The thermopile constructed using the developed nanostructured Si-Ge was confirmed to sensitively detect infrared rays.We constructed gases detection system using the thermopile and an infrared laser and demonstrated its superior function.

Paper Details

Date Published: 31 January 2020
PDF: 7 pages
Proc. SPIE 11288, Quantum Sensing and Nano Electronics and Photonics XVII, 112880I (31 January 2020); doi: 10.1117/12.2541835
Show Author Affiliations
Kotaro Hirose, Sumitomo Electric Industries, Ltd. (Japan)
Masahiro Adachi, Sumitomo Electric Industries, Ltd. (Japan)
Makoto Murata, Sumitomo Electric Industries, Ltd. (Japan)
Yoshiyuki Yamamoto, Sumitomo Electric Industries, Ltd. (Japan)
Tsunehiro Takeuchi, Toyota Technological Institute (Japan)

Published in SPIE Proceedings Vol. 11288:
Quantum Sensing and Nano Electronics and Photonics XVII
Manijeh Razeghi; Jay S. Lewis; Giti A. Khodaparast; Pedram Khalili, Editor(s)

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