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Lee, Hyun-Wook
Energy Storage and Electron Microscopy Laboratory
Research Interests
  • Energy storage, secondary batteries, transmission electron microscopy, real time analysis

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Vertical heterostructure of two-dimensional MoS2 and WSe2 with vertically aligned layers

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Title
Vertical heterostructure of two-dimensional MoS2 and WSe2 with vertically aligned layers
Author
Yu, Jung HoLee, Hye RyoungHong. Seung SaeKong, DeshengLee, Hyun-WookWang, HaotianXiong, FengWang, ShuangCui, Yi
Keywords
Two-dimensional layered material; transition metal dichalcogenide; heterostructure; molybdenum disulfide; tungsten diselenide; vertically aligned layer
Issue Date
2015-02
Publisher
AMER CHEMICAL SOC
Citation
NANO LETTERS, v.15, no.2, pp.1031 - 1035
Abstract
Two-dimensional (2D) layered materials consist of covalently bonded 2D atomic layers stacked by van der Waals interactions. Such anisotropic bonding nature gives rise to the orientation-dependent functionalities of the 2D layered materials. Different from most studies of 2D materials with their atomic layers parallel to substrate, we have recently developed layer vertically aligned 2D material nanofilms. Built on these developments, here, we demonstrate the synthesis of vertical heterostructure of n-type MoS2 and p-type WSe2 with vertically aligned atomic layers. Thin film of MoS2/WSe2 vertical structure was successfully synthesized without significant alloy formation. The heterostructure synthesis is scalable to a large area over 1 cm(2). We demonstrated the pn junction diode behavior of the heterostructure device. This novel device geometry opens up exciting opportunities for a variety of electronic and optoelectronic devices, complementary to the recent interesting vertical heterostructures with horizontal atomic layers.
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DOI
10.1021/nl503897h
ISSN
1530-6984
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ECHE_Journal Papers
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