Journal
SYNTHETIC METALS
Volume 193, Issue -, Pages 1-7Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.synthmet.2014.03.024
Keywords
Thermoelectric; Thermogenerator; Bulk organic thermoelectric material; Cu(I)-ethylenetetrathiolate
Funding
- National Natural Science Foundation of China [21021091, 21333011]
- Chinese Ministry of Science and Technology [2013CB632506, 2011CB932304]
- Chinese Academy of Sciences
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A kind of bulk organic thermoelectric material namely Cu(I)-ethylenetetrathiolate was synthesized, and its thermoelectric properties were optimized using chemical oxidation and reduction. Both X-ray absorption fine structure and X-ray photoelectron spectroscopy techniques were used to characterize the complex. The material showed p-type property and the best thermoelectric properties were achieved with a power factor of 118.2 mu Wm(-1) K-2 and a ZT of 0.060 at 400K. A thermogenerator based on this material and n-type poly[K-x(Ni-ethylenetetrathiolate)] had an open voltage of 1.51 V and a short current of 2.71 mA under a temperature difference of 60 K. The maximum power output exceeded 1 mW, which is the best performance of the thermoelectric modules based on organic thermoelectric materials. The thermogenerator could power a liquid crystal display calculator, which shed light on the practical use of organic thermoelectric materials. (C) 2014 Elsevier B.V. All rights reserved.
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