title: Thermal conductivity of monolayer molybdenum disulfide obtained from temperature-dependent Raman spectroscopy.
abstract: Atomically thin molybdenum disulfide (MoS2) offers potential for advanced devices and an alternative to graphene due to its unique electronic and optical properties. The temperature-dependent Raman spectra of exfoliated, monolayer MoS2 in the range of 100-320 K are reported and analyzed. The linear temperature coefficients of the in-plane E2g 1 and the out-of-plane A1g modes for both suspended and substrate-supported monolayer MoS2 are measured. These data, when combined with the first-order coefficients from laser power-dependent studies, enable the thermal conductivity to be extracted. The resulting thermal conductivity κ = (34.5(4) W/mK at room temperature agrees well with the first principles lattice dynamics simulations. However, this value is significantly lower than that of graphene. The results from this work provide important input for the design of MoS2-based devices where thermal management is critical.
authors.affiliation: Department of Electrical Engineering, University of Notre Dame , Notre Dame, Indiana 46556, United States.
authors.forename: Rusen
authors.initials: R
authors.lastname: Yan
authors.forename: Jeffrey R
authors.initials: JR
authors.lastname: Simpson
authors.forename: Simone
authors.initials: S
authors.lastname: Bertolazzi
authors.forename: Jacopo
authors.initials: J
authors.lastname: Brivio
authors.forename: Michael
authors.initials: M
authors.lastname: Watson
authors.forename: Xufei
authors.initials: X
authors.lastname: Wu
authors.forename: Andras
authors.initials: A
authors.lastname: Kis
authors.forename: Tengfei
authors.initials: T
authors.lastname: Luo
authors.forename: Angela R
authors.initials: AR
authors.lastname: Hight Walker
authors.forename: Huili Grace
authors.initials: HG
authors.lastname: Xing