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Research Article

Epitaxial growth of borophene on graphene surface towards efficient and broadband photodetector

Zenghui WuChen ShifanZitong WuYi LiuWei ShaoXinchao LiangChuang HouGuoan Tai( )
The State Key Laboratory of Mechanics and Control of Mechanical Structures and Laboratory of Intelligent Nano Materials and Devices of Ministry of Education, College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
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Graphical Abstract

Hydrogenated borophene and graphene heterostructures have been synthesized by chemical vapor deposition. A borophene-graphene heterostructured photodetector was fabricated to demonstrate its high-performance device application. The responsivity of the photodetector is very large in a broadband range from ultraviolet to infrared.


In-situ integration of multiple materials with well-defined interfaces as heterostructures is of great interest due to their unique properties and potential for new device functionality. Because of its polymorphism and diverse bonding geometries, borophene is a promising candidate for two-dimensional heterostructures, but suitable synthesis conditions have limited its potential applications. Toward this end, we demonstrate the vertical borophene and graphene heterostructures which form by epitaxial growth of borophene onto multilayer graphene on Cu substrates via chemical vapor deposition, where hydrogen and NaBH4 are respectively used as the carrier gas and the boron source. The lattice structure of the as-synthesized borophene well coincides with the predicted α′-boron sheet. The borophene-based photodetector shows an excellent broadband photoresponse from the ultraviolet (255 nm) to the infrared (940 nm) wavelengths, with enhanced responsivity compared to pristine borophene or graphene photodetectors. This work informs emerging efforts to integrate borophene into nanoelectronic applications for both fundamental investigations and technological applications.

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12274_2023_6109_MOESM1_ESM.pdf (1.8 MB)
Nano Research
Pages 3053-3060
Cite this article:
Wu Z, Shifan C, Wu Z, et al. Epitaxial growth of borophene on graphene surface towards efficient and broadband photodetector. Nano Research, 2024, 17(4): 3053-3060.






Web of Science






Received: 26 June 2023
Revised: 18 August 2023
Accepted: 20 August 2023
Published: 27 September 2023
© Tsinghua University Press 2023