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) Differential reflectivity measurement of monolayer MoSe2. (a) Differential reflectivity signal as a function of probe delay with pump fluences of (from top to bottom) 4.9, 4.29, 3.06, 2.45, 1.84, 1.23 and 0.61 μJ/cm2, respectively. The red curves are exponential fits. (b) Peak differential reflectivity signal as a function of pump fluence. (c) Peak differential reflectivity signal as a function of the probe photon energy.