Thermal conductivity determination of suspended mono- and bilayer WS2 by Raman spectroscopy

• Published in: Nano research Vol. 8; no. 4; pp. 1210 - 1221
• Main Authors: Peimyoo, Namphung, Shang, Jingzhi, Yang, Weihuang, Wang, Yanlong, Cong, Chunxiao, Yu, Ting
• Format: Journal Article
• Language: English
• Published: Beijing Tsinghua University Press 01.04.2015
• Subjects: Atomic/Molecular Structure and Spectra; Biomedicine; Biotechnology; Chemistry and Materials Science; Condensed Matter Physics; Materials Science; Nanotechnology; Research Article; WS2; 化学气相沉积; 发展中国家; 声子耦合; 拉曼光谱; 海藻酸钠; 激光诱导加热; 热导率; temperature dependence; tungsten disulfide; Raman; thermal conductivity; excitation power

We report the thermal conductivities of monolayer （1L） and bilayer （2L） WS2 grown by chemical vapor deposition （CVD）, which are determined by use of temperature and excitation dependences of E2g^1 and A1g Raman modes. The first-order temperature coefficients of E2g^1 and Alg modes in both supported...