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Keywords = slope-type thin-film thermoelectric generators

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10 pages, 4645 KiB  
Article
Experimental and Computational Analyses of Temperature Distributions in Slope-Type Thin-Film Thermoelectric Generators at Different Slope Angles and Evaluation of Their Thermoelectric Performance
by Saburo Tanaka, Masaki Yamaguchi, Rikuo Eguchi and Masayuki Takashiri
Coatings 2020, 10(3), 214; https://doi.org/10.3390/coatings10030214 - 28 Feb 2020
Cited by 3 | Viewed by 2396
Abstract
Thin-film thermoelectric generators are not widely used mainly because it is difficult to provide a temperature difference (ΔT) within the generators. To solve this problem, in our previous study, we prepared slope-type thin-film thermoelectric generators (STTEGs) using electrodeposition and transferred processes. [...] Read more.
Thin-film thermoelectric generators are not widely used mainly because it is difficult to provide a temperature difference (ΔT) within the generators. To solve this problem, in our previous study, we prepared slope-type thin-film thermoelectric generators (STTEGs) using electrodeposition and transferred processes. A thin-film generator including n-type Bi2Te3 and p-type Sb2Te3 thin films was attached on slope blocks made of polydimethylsiloxane. In this study, the slope angle of STTEGs was optimized based on experimental results and computational analyses using computational fluid dynamics (CFD). With the increase in the slope angle, the ΔT began increasing and became saturated at a slope angle of 58°, and this trend was also confirmed by experimental measurements. When the heat source temperature was set at 65 °C, the ΔT computationally reached 26 K at a slope angle of 58°, and the maximum output power was 46.1 nW. Therefore, we demonstrated that the highest performance of STTEGs with an optimal slope angle can be estimated by combining the experimental results and computational analyses. Full article
(This article belongs to the Section Thin Films)
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2 pages, 823 KiB  
Correction
Correction: Yamamuro et al. Power Generation in Slope-Type Thin-Film Thermoelectric Generators by the Simple Contact of a Heat Source. Coatings 2019, 9, 63
by Hiroki Yamamuro and Masayuki Takashiri
Coatings 2019, 9(10), 661; https://doi.org/10.3390/coatings9100661 - 12 Oct 2019
Cited by 2 | Viewed by 1898
Abstract
In the original version of article [...] Full article
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9 pages, 3439 KiB  
Article
Power Generation in Slope-Type Thin-Film Thermoelectric Generators by the Simple Contact of a Heat Source
by Hiroki Yamamuro and Masayuki Takashiri
Coatings 2019, 9(2), 63; https://doi.org/10.3390/coatings9020063 - 22 Jan 2019
Cited by 22 | Viewed by 4928 | Correction
Abstract
To conveniently generate electric energy for next-generation smart network monitoring systems, we propose the design and fabrication of slope-type thin-film thermoelectric generators by the simple contact of a heat source. N-type Bi2Te3 films and p-type Sb2Te3 films [...] Read more.
To conveniently generate electric energy for next-generation smart network monitoring systems, we propose the design and fabrication of slope-type thin-film thermoelectric generators by the simple contact of a heat source. N-type Bi2Te3 films and p-type Sb2Te3 films were formed on a stainless-steel substrate employing potentiostatic electrodeposition using a nitric acid-based bath, followed by a transfer process. In order to naturally induce a temperature difference (ΔT) between the ends of the generator, slope blocks made by polydimethylsiloxane (PDMS) were prepared and then inserted between the generators and heat sources. The performance of the generators, the open circuit voltage (Voc), and the maximum output power (Pmax), were measured using PDMS slope angles as the temperature of the heat source was increased. The ΔT of the generators increased as the slope angle was increased. The generator with the highest slope angle (28°) exhibited a Voc of 7.2 mV and Pmax of 18.3 μW at ΔT of 15 K for a heat source temperature of 42 °C. Our results demonstrate the feasibility of slope-type thin-film thermoelectric generators, which can be fabricated with a low manufacturing cost. Full article
(This article belongs to the Special Issue Advances in Flexible Films and Coatings)
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