Please use this identifier to cite or link to this item:
|Title:||Thermoelectric performance of MX2 (M Mo,W; X S,Se) monolayers|
|Citation:||Huang, W., Da, H., Liang, G. (2013-03-14). Thermoelectric performance of MX2 (M Mo,W; X S,Se) monolayers. Journal of Applied Physics 113 (10) : -. ScholarBank@NUS Repository. https://doi.org/10.1063/1.4794363|
|Abstract:||Using ab-initio method and ballistic transport model, we study electron and phonon energy dispersion relations of monolayer transition-metal dichalcogenides: MoS2, MoSe2, WS2, and WSe 2. Their electron and heat transports as well as their thermoelectric properties are also studied under linear response regime with different doping types, crystal orientations, and temperatures. Our results show that electron and phonon transports are not very sensitive to crystal orientations because the differences between group velocity and transmission of these carriers along different transport directions are not significant. Furthermore, as temperature increases, first peak values of thermoelectric figure of merit (ZT 1st peak) increase linearly except for monolayer n-type WSe 2/MoSe2 and p-type WS2, which have higher increasing rates when temperature is high due to the electron transport contribution from an additional valley. Among these various conditions, the results show that all monolayers have similar ZT1st peak at low temperatures below 100 K, and p-type monolayer MoS2 has the largest ZT1st peak at room temperature while n-type WSe2 has the largest ZT1st peak at high temperatures. © 2013 American Institute of Physics.|
|Source Title:||Journal of Applied Physics|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Jan 15, 2019
WEB OF SCIENCETM
checked on Jan 7, 2019
checked on Dec 15, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.