Improved performance of a thin-film multijunction thermal converter

Author

Fujiki, Hiroyuki ; Amagai, Yasutaka ; Sasaki, Hiromu ; Shimizume, Koji ; Kishino, Katsumi ; Hidaka, Shigeru

Author_Institution

Nat. Inst. of Adv. Ind. Sci. & Technol., Tsukuba, Japan

fYear

2014

fDate

24-29 Aug. 2014

Firstpage

48

Lastpage

49

Abstract

This paper describes the improved performance of thin film multijunction thermal converters (TFMJTC) that has been developed by NMIJ and NIKKOHM Co. Ltd. For the former type TFMJTCs, a deterioration of thermocouples was observed. The degradation prevention has been completed by changing the design and fabrication process of the thin-film thermopile to improve the durability of the TFMJTCs. Long-term use of the improved TFMJTCs (e.g., more than 20 years) can be expected based on the Arrhenius model. The ac-dc transfer differences from 10 Hz to 1 MHz can be reduced to less than 10 μV/V by adjusting the input impedance.

Keywords

metallic thin films; thermocouples; thermopiles; Arrhenius model; ac-dc transfer differences; degradation prevention; durability; frequency 10 Hz to 1 MHz; thermocouples; thin-film multijunction thermal converter; thin-film thermopile; Bismuth; Films; III-V semiconductor materials; Resistance; Resistance heating; Substrates; Temperature measurement; AC voltage; Thermal converters; ac-dc transfer difference; thermocouple; thin metal film;

fLanguage

English

Publisher

ieee

Conference_Titel

Precision Electromagnetic Measurements (CPEM 2014), 2014 Conference on

Conference_Location

Rio de Janeiro

ISSN

0589-1485

Print_ISBN

978-1-4799-5205-2

Type

conf

DOI

10.1109/CPEM.2014.6898252

Filename

6898252