Taube Andrzej, Judek Jarosław, Łapińska Anna, Zdrojek Mariusz
Faculty of Physics, Warsaw University of Technology , Koszykowa 75, 00-662 Warsaw, Poland.
ACS Appl Mater Interfaces. 2015 Mar 11;7(9):5061-5. doi: 10.1021/acsami.5b00690. Epub 2015 Feb 26.
Thermal properties can substantially affect the operation of various electronics and optoelectronics devices based on two-dimensional materials. In this work, we describe our investigation of temperature-dependent thermal conductivity and interfacial thermal conductance of molybdenum disulfide monolayers supported on SiO2/Si substrates, using Raman spectroscopy. We observed that the calculated thermal conductivity (κ) and interfacial thermal conductance (g) decreased with increasing temperature from 62.2 W m(-1) K(-1) and 1.94 MW m(-2) K(-1) at 300 K to 7.45 W m(-1) K(-1) and 1.25 MW m(-2) K(-1) at 450 K, respectively.
热学性质会极大地影响基于二维材料的各种电子和光电器件的运行。在这项工作中,我们描述了利用拉曼光谱对支撑在SiO2/Si衬底上的二硫化钼单层的温度依赖性热导率和界面热导进行的研究。我们观察到,计算得出的热导率(κ)和界面热导(g)随温度升高而降低,分别从300K时的62.2W m(-1) K(-1)和1.94MW m(-2) K(-1)降至450K时的7.45W m(-1) K(-1)和1.25MW m(-2) K(-1)。