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Thermoelectric Prop...
Thermoelectric Properties of n-Type Molybdenum Disulfide (MoS2) Thin Film by Using a Simple Measurement Method
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- Ashraf, Shakeel, 1984- (author)
- Mittuniversitetet,Institutionen för elektronikkonstruktion
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- Forsberg, Viviane (author)
- Mittuniversitetet,KTH,Biokompositer,Wallenberg Wood Science Center,Institutionen för naturvetenskap,KTH, Wallenberg Wood Science Center, Stockholm
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- Mattsson, Claes G., 1978- (author)
- Mittuniversitetet,Institutionen för elektronikkonstruktion
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- Thungström, Göran, 1960- (author)
- Mittuniversitetet,Institutionen för elektronikkonstruktion
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(creator_code:org_t)
- 2019-10-26
- 2019
- English.
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In: Materials. - : MDPI. - 1996-1944. ; 12:21
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Abstract
Subject headings
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- In this paper, a micrometre thin film of molybdenum disulfide (MoS2) is characterized for thermoelectric properties. The sample was prepared through mechanical exfoliation of a molybdenite crystal. The Seebeck coefficient measurement was performed by generating a temperature gradient across the sample and recording the induced electrical voltage, and for this purpose a simple measurement setup was developed. In the measurement, platinum was utilized as reference material in the electrodes. The Seebeck value of MoS2 was estimated to be approximately -600 mu V/K at a temperature difference of 40 degrees C. The negative sign indicates that the polarity of the material is n-type. For measurement of the thermal conductivity, the sample was sandwiched between the heat source and the heat sink, and a steady-state power of 1.42 W was provided while monitoring the temperature difference across the sample. Based on Fourier's law of conduction, the thermal conductivity of the sample was estimated to be approximately 0.26 Wm(-1) K-. The electrical resistivity was estimated to be 29 Omega cm. The figure of merit of MoS2 was estimated to be 1.99 x 10(-4).
Subject headings
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
Keyword
- thermoelectricity
- thermoelectric generators
- Seebeck coefficient
- MoS2
- exfoliated
- thin films
- green energy harvesting
- molybdenum disulfide
- molybdenite crystal
Publication and Content Type
- ref (subject category)
- art (subject category)
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