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

Shoujun Zheng; Linfeng Sun; Tingting Yin; Alexander M. Dubrovkin; Fucai Liu; Zheng Liu; Ze Xiang Shen; Hong Jin Fan

doi:10.1063/1.4908256

Monolayers of W_xMo_1-xS₂ alloy heterostructure with in-plane composition variations

Shoujun Zheng, Linfeng Sun, Tingting Yin, Alexander M. Dubrovkin, Fucai Liu, Zheng Liu, Ze Xiang Shen, Hong Jin Fan

Nanyang Technological University

Research output: Contribution to journal › Article › peer-review

110 Citations (Scopus)

Abstract

We report the fabrication of single-crystal monolayer W_xMo_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 687.4nm at the triangle center to 633.6nm 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.

Original language	English
Article number	063113
Journal	Applied Physics Letters
Volume	106
Issue number	6
DOIs	https://doi.org/10.1063/1.4908256
Publication status	Published - 9 Feb 2015
Externally published	Yes

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Zheng, S., Sun, L., Yin, T., Dubrovkin, A. M., Liu, F., Liu, Z., Shen, Z. X., & Fan, H. J. (2015). Monolayers of W_xMo_1-xS₂ alloy heterostructure with in-plane composition variations. Applied Physics Letters, 106(6), Article 063113. https://doi.org/10.1063/1.4908256

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title = "Monolayers of WxMo1-xS2 alloy heterostructure with in-plane composition variations",

abstract = "We report the fabrication of single-crystal monolayer WxMo1-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 687.4nm at the triangle center to 633.6nm 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.",

author = "Shoujun Zheng and Linfeng Sun and Tingting Yin and Dubrovkin, {Alexander M.} and Fucai Liu and Zheng Liu and Shen, {Ze Xiang} and Fan, {Hong Jin}",

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AU - Zheng, Shoujun

AU - Sun, Linfeng

AU - Yin, Tingting

AU - Dubrovkin, Alexander M.

AU - Liu, Fucai

AU - Liu, Zheng

AU - Shen, Ze Xiang

AU - Fan, Hong Jin

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Y1 - 2015/2/9

N2 - We report the fabrication of single-crystal monolayer WxMo1-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 687.4nm at the triangle center to 633.6nm 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.

AB - We report the fabrication of single-crystal monolayer WxMo1-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 687.4nm at the triangle center to 633.6nm 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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JO - Applied Physics Letters

JF - Applied Physics Letters

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ER -

Monolayers of W_xMo_1-xS₂ alloy heterostructure with in-plane composition variations

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