12:00 PM - 12:15 PM
△ [18a-C310-10] Photoresponse measurement of monolayer WSe2/MoSe2 in-plane heterostructure by a photo excited multiprobe technique
Keywords:Transition metal dicalcogenides, Multiprobe technique, Photocarrier dynamics
In recent years, transition metal dichalcogenides (TMDC) family such as MoS2 and WSe2 has attracted much attention due to their remarkable optoelectronic properties. For the first time in the world, we succeed to combine multiprobe techniques with femto-second pulsed laser system. By using the multiprobe optical method, we measured WSe2/MoSe2 in-plane heterostructure on SiO2/Si substrate. As a result, we evaluated the band structure including the schottkey barrier of probe-sample interface and band shift on MoSe2/WSe2 interface and positional dependence of carrier dynamics. This technique is expected to play an important role in the researches to develop advanced functional devices with microscopic structures.