We studied the thermal conductivity of a van der Waals hetero-bilayer, composed of 1L-MoS2 and 1L-MoSe2 monolayers, prepared over 1.2 μm holes aligned on a thick h-BN flake. We determined the laser heating efficiency of the air-suspended and the h-BN supported hetero-bilayer as 1.2 and 0.77 K/μW, respectively, through the measurement of Raman shift. It was evaluated the thermal conductivity of the MoS2/MoSe2 hetero-bilayer as 115 (±25) W/mK using this result and numerical analysis based on a heat equation. The interfacial thermal conductance between the hetero-bilayer and the h-BN was also determined as 0.9 (±0.3) MW/m2K.

中文翻译：

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范德华异质双层MoS ₂ /MoSe _{2 的}热导率

我们研究了范德华异质双层的热导率，由 1L-MoS2 和 1L-MoSe2 单层组成，在厚 h-BN 薄片上制备了超过 1.2 μm 的孔。我们通过拉曼位移的测量确定了空气悬浮和 h-BN 支持的异质双层的激光加热效率分别为 1.2 和 0.77 K/μW。使用该结果和基于热方程的数值分析，将 MoS2/MoSe2 异质双层的热导率评估为 115 (±25) W/mK。异质双层和 h-BN 之间的界面热导也被确定为 0.9 (±0.3) MW/m2K。