Ultrafast interlayer photocarrier transfer in graphene–MoSe2 van derWaals heterostructure
Zhang Xin-Wu, He Da-Wei, He Jia-Qi, Zhao Si-Qi, Hao Sheng-Cai, Wang Yong-Sheng, Yi Li-Xin †
       

(color online) (a) Microscope images of the samples studied. (b) Band alignment of graphene and MoSe2 monolayers. (c) Experimental setup to measure differential reflectivity.