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http://dx.doi.org/10.5012/bkcs.2010.31.11.3225

Thermal and Electronic Properties of Exfoliated Metal Chalcogenides  

Kim, Jong-Young (Icheon Branch, Korea Institute of Ceramic Engineering and Technology)
Choi, Soon-Mok (Green Ceramic Division, Korea Institute of Ceramic Engineering and Technology)
Seo, Won-Seon (Green Ceramic Division, Korea Institute of Ceramic Engineering and Technology)
Cho, Woo-Seok (Icheon Branch, Korea Institute of Ceramic Engineering and Technology)
Publication Information
Bulletin of the Korean Chemical Society / v.31, no.11, 2010 , pp. 3225-3227 More about this Journal
Abstract
The thermal conductivity of layered metal chalcogenides such as $MT_2$ (M = Mo, W; T = S, Se) shows a marked decrease after exfoliation and subsequent restacking process. Random stacking of two-dimensional crystalline sheets circumvents thermal conduction pathways along a longitudinal direction, which results in a reduction in thermal conductivity. $WS_2$ and $WSe_2$ compounds retain p-type conducting behavior after exfoliation and restacking with decreased electrical conductivity due to the change in carrier concentration. $MoSe_2$ compound exhibits metallic behavior < $130^{\circ}C$ with a small Seebeck coefficient, which results from metastable 1T-$MoSe_2$ structure of the restacked phase.
Keywords
Thermal properties; Electrical properties;
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