Temperature dependent optical properties and thermal conductivities of single- and few-layer MoS$_{2}$

The transition metal dichalcogenide, MoS$_{2}$ have shown unique optical and electrical properties, such as band structure transition, high mobility, and strong photoluminescence, in a monolayer form. Here we investigate the thermal transport properties in exfoliated monolayer and bilayer MoS$_{2}$. By measuring the Raman peak shift in response to laser heating, and the Raman peak shift with temperature variation, we obtain the room-temperature thermal conductivity and the interface conductance of about (75+34/-26)W/mK and (0.24+0.06/-0.06)MW/m$^2$K for supported monolayer MoS$_{2}$. And the thermal conductivity of the suspended monolayer MoS2 is around (81+12/-11)W/mK at room temperature, and (60+11/-9)W/mK at 500K.