Measuring Seebeck Coefficients on High Resistivity Materials

Mette, Herbert; Loscoe, Claire

doi:10.1063/1.1720037

Cited by 8 publications

(3 citation statements)

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“…When the number of TE legs was greater than 3, the device resistance was too large to measure the Seebeck coefficient accurately. Samples with high internal resistance will generate a considerable voltage drop when connected to an external load measurement device . The multimeter is sensitive to the lowest ranges of voltage fluctuations, which can cause signal noise up to millivolt levels.…”

Section: Resultsmentioning

confidence: 99%

“…Samples with high internal resistance will generate a considerable voltage drop when connected to an external load measurement device. 55 The multimeter is sensitive to the lowest ranges of voltage fluctuations, which can cause signal noise up to millivolt levels. In addition, the Seebeck voltage signals can drift due to high internal resistance, resulting in large capacitive time constants.…”

Section: Resultsmentioning

confidence: 99%

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Self-Powered Thermoelectric Hydrogen Sensors Based on Low-Cost Bismuth Sulfide Thin Films: Quick Response at Room Temperature

Lien

et al. 2022

ACS Appl. Mater. Interfaces

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Thermoelectric (TE)-based gas sensors have attracted significant attention due to their high selectivity, low power consumption, and minimum maintenance requirements. However, it is challenging to find low-cost, environmentally friendly materials and simple device fabrication processes for large-scale applications. Herein, we report self-powered thermoelectric hydrogen (TEH) sensors based on bismuth sulfide (Bi2S3) fabricated from a low-cost Bi2S3 TE layer and platinum (Pt) catalyst. When working at room temperature, the monomorphic-type TEH sensor obtained an output response signal of 42.2 μV with a response time of 17 s at a 3% hydrogen atmosphere. To further improve device performance, we connected the patterned Bi2S3 films in series to increase the Seebeck coefficient to −897 μV K–1. For comparison, the resulting N tandem-type TEH sensor yielded a distinguished output voltage of 101.4 μV, which was greater than the monomorphic type by a factor of 2.4. Significantly, the response and recovery time of the N-tandem-type TEH sensor to 3% hydrogen were shortened to 14 and 15 s, respectively. This work provides a simple, environmentally friendly, and low-cost strategy for fabricating high-performance TEH sensors by applying low-cost Bi2S3 TE materials.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Self-Powered Thermoelectric Hydrogen Sensors Based on Low-Cost Bismuth Sulfide Thin Films: Quick Response at Room Temperature

Lien

et al. 2022

ACS Appl. Mater. Interfaces

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“…The purpose of this communication is to describe apparatus which has been successfully used for such measurements on several high resistivity polymer films. Our design differs from that recently reported by Mette and Loscoe (1966) in that (a) the apparatus is continuously evacuated, since Seebeck coefficient values may be sensitive to the atmosphere in which they are measured (Katon and Wildi 1964); (b) measurements are made in the dark in order to minimize surface effects ; (c) voltages and temperatures are measured simultaneously.…”

Section: Introductionmentioning

confidence: 99%

Measuring Seebeck coefficients on high resistivity polymers

Ranicar

Fleming

1970

J. Phys. D: Appl. Phys.

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Thermoelectric Power of Illuminated CdS

Birkholz¹,

Heering²,

Stöckmann³

1968

Physica Status Solidi (b)

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The change in the thermoelectric power of CdS under illumination was investigated by Seiter (1) and Weichman et al. (2). Whereas the results of Seiter show a decrease of the thermoelectric power with increasing photoconductivity, Weichman measured an increase with increasing illumination. The theory of the photothermoelectric effect for weak illumination, developed by Tauc (3, 4). predicts a decrease of the thermoelectric power with increasing conductivity. An extension of that theory to the case of strong illumination by Weichman (2) gives the same result.We measured the dependence of the thermoelectric power on photoconductivity of CdS single crystals grown by the Frerich method, at room temperature. The dark conductivity was lower than 10In cm (dark carrier concentration < 5x10 ~m -~) . The electron concentration was changed from 10 to 1013 cm ing to a change of the sample resistance from 1 0 l 1 to 10 a. In order to resolve changes of the thermoelectric power of 2 2 pV/ C even for a source resistance of 10 a compensation method using a vibrating capacitor electrometer (Keithley 640). All connecting leads were shielded rigorously (5). The crystal was contacted with indium and could be illuminated simultaneously by bandgap and infrared radiation.

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Measuring Seebeck Coefficients on High Resistivity Materials

Cited by 8 publications

References 1 publication

Self-Powered Thermoelectric Hydrogen Sensors Based on Low-Cost Bismuth Sulfide Thin Films: Quick Response at Room Temperature

Self-Powered Thermoelectric Hydrogen Sensors Based on Low-Cost Bismuth Sulfide Thin Films: Quick Response at Room Temperature

Measuring Seebeck coefficients on high resistivity polymers

Thermoelectric Power of Illuminated CdS

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