Monolayers of WxMo1−xS2 alloy heterostructure with in-plane composition variations

Monolayers of WxMo1−xS2 alloy heterostructure with in-plane composition variations

We report the fabrication of single-crystal monolayer Wx Mo 1−xS2 alloy triangles using chemical vapor deposition method. Raman and photoluminescence property are investigated in correlation to the composition. In the monolayer triangles, the photoluminescence peak shifts continuously from 687.4 nm...

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Bibliographic Details
Main Authors: Zheng, Shoujun, Sun, Linfeng, Yin, Tingting, Dubrovkin, Alexander M., Liu, Fucai, Liu, Zheng, Shen, Ze Xiang, Fan, Hong Jin
Other Authors: School of Materials Science & Engineering
Format: Article
Language:English
Published: 2015
Subjects:
DRNTU::Science::Physics::Atomic physics::Properties of matter and antimatter
Online Access:https://hdl.handle.net/10356/106979
http://hdl.handle.net/10220/25283
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Institution: Nanyang Technological University
Language: English
Description
Summary:We report the fabrication of single-crystal monolayer Wx Mo 1−xS2 alloy triangles using chemical vapor deposition method. Raman and photoluminescence property are investigated in correlation to the composition. In the monolayer triangles, the photoluminescence peak shifts continuously from 687.4 nm at the triangle center to 633.6 nm at the edge, corresponding to a switch from MoS2 to WS2 across the heterojunction. This composition-graded alloy may have interesting functions in broadband photodetection and multi-color light emission.

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