@article{f32ac4de8b974440990bef930e84bf8d,
title = "Temperature-Dependent Thermal Boundary Conductance of Monolayer MoS2 by Raman Thermometry",
abstract = "The electrical and thermal behavior of nanoscale devices based on two-dimensional (2D) materials is often limited by their contacts and interfaces. Here we report the temperature-dependent thermal boundary conductance (TBC) of monolayer MoS2 with AlN and SiO2, using Raman thermometry with laser-induced heating. The temperature-dependent optical absorption of the 2D material is crucial in such experiments, which we characterize here for the first time above room temperature. We obtain TBC {\^a}1/4 15 MW m-2 K-1 near room temperature, increasing as {\^a}1/4 T0.65 in the range 300{\^a}'600 K. The similar TBC of MoS2 with the two substrates indicates that MoS2 is the {"}softer{"} material with weaker phonon irradiance, and the relatively low TBC signifies that such interfaces present a key bottleneck in energy dissipation from 2D devices. Our approach is needed to correctly perform Raman thermometry of 2D materials, and our findings are key for understanding energy coupling at the nanoscale.",
keywords = "2D materials, Kapitza length, MoS, Raman thermometry, Thermal boundary conductance (TBC), aluminum nitride (AlN), optical absorption",
author = "Eilam Yalon and Aslan, {{\"O}zg{\"u}r Burak} and Smithe, {Kirby K.H.} and McClellan, {Connor J.} and Suryavanshi, {Saurabh V.} and Feng Xiong and Aditya Sood and Neumann, {Christopher M.} and Xiaoqing Xu and Goodson, {Kenneth E.} and Heinz, {Tony F.} and Eric Pop",
note = "Funding Information: K.K.H.S. acknowledges partial support from the Stanford Graduate Fellowship (SGF) program and NSF Graduate Research Fellowship under Grant No. DGE-114747. Funding Information: We thank Pawel Keblinski for fruitful discussions. We acknowledge the Stanford Nanofabrication Facility (SNF) and Stanford Nano Shared Facilities (SNSF) for enabling device fabrication and measurements. This work was supported in part by National Science Foundation (NSF) EFRI 2-DARE grant 1542883, by the NSF Center for Power Optimization of Electro-Thermal Systems (POETS) under grant EEC-1449548, by the NSF DMREF grant 1534279, by the Stanford SystemX Alliance, by NSF DMR-1411107 (O.B.A.), and by the Department of Energy, Office of Science, Basic Energy Sciences, Materials Sciences and Engineering Division, under Contract DE-AC02-76SF00515 (T. F. H.). E.Y. acknowledges partial support from Ilan Ramon Fulbright Fellowship and from the Andrew and Erna Finci Viterbi Foundation. K.K.H.S. acknowledges partial support from the Stanford Graduate Fellowship (SGF) program and NSF Graduate Research Fellowship under Grant No. DGE-114747. Publisher Copyright: {\textcopyright} 2017 American Chemical Society.",
year = "2017",
month = dec,
day = "13",
doi = "10.1021/acsami.7b11641",
language = "English (US)",
volume = "9",
pages = "43013--43020",
journal = "ACS Applied Materials and Interfaces",
issn = "1944-8244",
publisher = "American Chemical Society",
number = "49",
}