二次谐波在二维材料结构表征中的应用

夏芳芳, 王发坤, 胡海龙, 许翔, 李阳, 翟天佑

Application of Second Harmonic Generation in Characterization of 2D Materials

XIA Fangfang, WANG Fakun, HU Hailong, XU Xiang, LI Yang, ZHAI Tianyou

图3 二次谐波表征不同堆垛层数的二维层状晶体

Fig. 3 Characterization of 2D layered crystals with different stacking layers by SHG (a) Side view and top view of atomic structure illustration of typical layered WS2 with 2H and 3R stacking; (b-c) Optical images of 2H and 3R phase WS2; (d-e) SHG intensity of 2H and 3R phase WS2 as a function of layer numbers[40]; (f) SHG intensity of 2H and 3R phase MoS2 as a function of layer numbers[41]