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Van der Waals epitaxial growth and optoelectronics of large-scale WSe2/SnS2 vertical bilayer p–n junctions

Open access
Yang, Tiefeng, Zheng, Biyuan, Wang, Zhen, Xu, Tao, Pan, Chen, Zou, Juan, Zhang, Xuehong, Qi, Zhaoyang, Liu, Hongjun, Feng, Yexin, Hu, Weida, Miao, Feng, Sun, Litao, Duan, Xiangfeng, Pan, Anlian·2017·Nature Communications

Abstract

High-quality two-dimensional atomic layered p–n heterostructures are essential for high-performance integrated optoelectronics. The studies to date have been largely limited to exfoliated and restacked flakes, and the controlled growth of such heterostructures remains a significant challenge. Here we report the direct van der Waals epitaxial growth of large-scale WSe 2/SnS 2 vertical bilayer p–n junctions on SiO 2/Si substrates, with the lateral sizes reaching up to millimeter scale. Multi-electrode field-effect transistors have been integrated on a single heterostructure bilayer. Electrical transport measurements indicate that the field-effect transistors of the junction show an ultra-low off-state leakage current of 10−14 A and a highest on–off ratio of up to 10 7. Optoelectronic characterizations show prominent photoresponse, with a fast response time of 500 μs, faster than all the directly grown vertical 2D heterostructures. The direct growth of high-quality van der Waals junctions marks an important step toward high-performance integrated optoelectronic devices and systems.

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Metadata

Authors
Yang, T., Zheng, B., Wang, Z., Xu, T., Pan, C., Zou, J., Zhang, X., Qi, Z., Liu, H., Feng, Y., Hu, W., Miao, F., Sun, L., Duan, X., & Pan, A.
Venue
Nature Communications
Published
2017-12-04
Volume
8
Issue
1
Pages
1906-1906
ISSN
2041-1723 (ISSN-L)
OpenAlex
W2770701804
Cited by
476
References
4
FWCI
19.53
Type
journal article
Language
en
Open access
gold

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CoChat. (2026). Citation check: Van der Waals epitaxial growth and optoelectronics of large-scale WSe2/SnS2 vertical bilayer p–n junctions. https://app.cochat.ai/papers/10.1038/s41467-017-02093-z
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Yang, T., Zheng, B., Wang, Z., Xu, T., Pan, C., Zou, J., Zhang, X., Qi, Z., Liu, H., Feng, Y., Hu, W., Miao, F., Sun, L., Duan, X., & Pan, A. (2017). Van der Waals epitaxial growth and optoelectronics of large-scale WSe2/SnS2 vertical bilayer p–n junctions. Nature Communications. https://doi.org/10.1038/s41467-017-02093-z

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