Development of laser-combined scanning multiprobe spectroscopy and application to analysis of WSe2/MoSe2 in-plane heterostructure
Development of laser-combined scanning multiprobe spectroscopy and application to analysis of WSe2/MoSe2 in-plane heterostructure
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DOI：
10.7567/1882-0786/ab09b9
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发表时间：
2019-04-01
影响因子：
2.3
通讯作者：
Shigekawa, Hidemi
中科院分区：
文献类型：
--
作者：
Mogi, Hiroyuki;Wang, Zi-Han;Shigekawa, Hidemi
通过将扫描多探针（MP）显微镜与光调制光谱（LMS）和光学泵浦探针（OPP）方法等光学方法相结合，我们成功开发了一种用于测量微观结构中电子结构和光生载流子动力学的显微镜方法。我们通过分析 SiO2/Si 衬底上生长的 WSe2/MoSe2 面内异质结构单层岛的电子结构来展示其性能。通过 LMS 观察场效应晶体管特性和异质结构上的光电流映射，我们能够可视化能带结构。 OPP-MP 光谱也成功地探测了载流子动力学的位置依赖性。 (C) 2019 日本应用物理学会
By combining scanning multiprobe (MP) microscopy with optical methods such as light-modulated spectroscopy (LMS) and optical pump-probe (OPP) method, we have succeeded in developing a microscopy method for measuring electronic structures and photoinduced carrier dynamics in microscopic structures. We demonstrated its performance by analyzing the electronic structures in a monolayer island of a WSe2/MoSe2 in-plane heterostructure grown on a SiO2/Si substrate. By observing the field-effect transistor characteristics and photocurrent mapping over the heterostructure by LMS, we were able to visualize the band structure. Positional dependence of carrier dynamics was also successfully probed by OPP-MP spectroscopy. (C) 2019 The Japan Society of Applied Physics