A graphene–Mo<sub>2</sub>C heterostructure for a highly responsive broadband photodetector

Bao, Xiaozhi; Sun, Tao; Liu, Yan; Xu, Chuan; Ma, Weiliang; Guo, Junpo; Zheng, Yun; Nanjunda, Shivananju Bannur; Liu, Huating; Huang, Zongyu; Li, Shaojuan; Lin, Shang; Xing, Guichuan; Ren, Wencai; Bao, Qiaoliang; Shao, Huaiyu

doi:10.1039/d1cp03536c

Cited by 3 publications

(2 citation statements)

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“…[67] In the case of WC-G heterostructure, we anticipate that this mechanism offers a viable avenue for tuning the intrinsic properties of graphene. The Mo 2 C-graphene have found applications in a range of fields, including broadband photodetector, [68] hydrogen evolution reactions, [34] and lithiumion batteries. [69] Besides, the Mo 2 C-graphene heterostructure has also been proved to be an ideal platform for investigating the interplay of massless Dirac fermion and superconductivity.…”

Section: Resultsmentioning

confidence: 99%

Substrate Engineering toward Selective Growth of Ultrathin WC Crystals and Heterostructures via Liquid Cu‐Zn Catalyst

Li,

Zhang,

et al. 2024

Adv Funct Materials

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Transition metal carbides (TMCs) grown by chemical vapor deposition (CVD) offer promise for numerous novel phenomena and applications in the 2D limit. Despite considerable efforts thus far, the flexible customization of TMCs and their heterostructures still remains challenging. Herein, a substrate engineering is developed to achieve customized manufacturing of ultrathin WC single crystals and WC/graphene (WC‐G) heterostructures by varying the concentration of Zn in Cu‐Zn alloy substrate. It is worth noting that Zn atoms can remarkably reduce the nucleation density of graphene and promote the nucleation of WC. Thus, an increasing Zn content is applied to synergistically modulate the growth of graphene and WC, enabling the controllable fabrication of WC and WC‐G heterostructures. The synthesized WC crystals exhibit an ultrathin nature down to 3 nm, as well as high crystalline, ultra‐clean surface, and superb chemical stability. Based on that, the typical metallic properties with a temperature‐dependent resistance (nearly 1.30 Ω at 300 K and nearly 0.08 Ω at 1.7 K) and low resistance as well as excellent nonlinear optical performance of WC are demonstrated. This work provides fresh insights into regulating the growth behavior of multiblock‐structured carbides and promotes the study of their optic and electronic properties.

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Section: Resultsmentioning

confidence: 99%

Substrate Engineering toward Selective Growth of Ultrathin WC Crystals and Heterostructures via Liquid Cu‐Zn Catalyst

Li,

Zhang,

et al. 2024

Adv Funct Materials

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“…12 2D materials might show, however, distinct physical and chemical properties when two or more of them are combined into a heterostructure. [13][14][15][16] The formation of heterostructures thus determines in those cases the overall performance of the hybrid material, [17][18][19][20] leading to a new area to study interfaces and device applications. 21,22 Generally, two types of 2D heterostructures can be considered: vertical heterostructures (VH) and lateral heterostructures (LH).…”

Section: Introductionmentioning

confidence: 99%

MXene-based Ti₂C/Ta₂C lateral heterostructure: an intrinsic room temperature ferromagnetic material with large magnetic anisotropy

Özcan

Biel

2023

RSC Adv.

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2D Growth of BiSCl as Anisotropic Photodetector with Ultrahigh Responsivity and Detectivity

Lin,

Yuan,

Wang

et al. 2024

Advanced Optical Materials

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BiSCl, which shares the anisotropic chain‐like lattice configuration with the BiVXVIYVII (XS, Se; YCl, Br, I) family displays high photoelectric conversion efficiency in the UV–vis wavelength region. The current difficulty in 2D growth restricts the investigation of device performance and further integration. Herein, an epitaxial growth strategy for 2D BiSCl is proposed based on the principle of sharing a chloridion layer at the BiSCl/BiOCl interface. The interfacial atomic arrangement is carefully revealed using atomic resolved AC‐TEM(Spherical Aberration High Transmission Electron Microscope) and demonstrated by calculations based on density functional theory. Benefiting from its compatibility with PS‐assisted large‐scale transfer technology, the photoelectric performance is evaluated by constructing a standard symmetrical photoconductor and Graphene‐BiSCl Schottky junction device. High responsivity (1.71 × 104 A W−1) and detectivity (5.9 × 1016. Jones) are achieved at 405 nm, and robustness is shown in a broadband spectrum, which manifested prominent anisotropic photoelectric behavior and great potential in weak‐light detection. These results elucidate the photoelectric applications of BiSCl semiconductors and the structural design of the BiVXVIYVII family.

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A graphene–Mo₂C heterostructure for a highly responsive broadband photodetector

Abstract: Photodetector based on intrinsic graphene can operate over a broad wavelength range with ultrafast response, but its responsivity is much lower than commercial silicon photodiode. The combination of graphene with...

Cited by 3 publications

References 37 publications

Substrate Engineering toward Selective Growth of Ultrathin WC Crystals and Heterostructures via Liquid Cu‐Zn Catalyst

Substrate Engineering toward Selective Growth of Ultrathin WC Crystals and Heterostructures via Liquid Cu‐Zn Catalyst

MXene-based Ti₂C/Ta₂C lateral heterostructure: an intrinsic room temperature ferromagnetic material with large magnetic anisotropy

2D Growth of BiSCl as Anisotropic Photodetector with Ultrahigh Responsivity and Detectivity

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A graphene–Mo2C heterostructure for a highly responsive broadband photodetector

Abstract: Photodetector based on intrinsic graphene can operate over a broad wavelength range with ultrafast response, but its responsivity is much lower than commercial silicon photodiode. The combination of graphene with...

Cited by 3 publications

References 37 publications

Substrate Engineering toward Selective Growth of Ultrathin WC Crystals and Heterostructures via Liquid Cu‐Zn Catalyst

Substrate Engineering toward Selective Growth of Ultrathin WC Crystals and Heterostructures via Liquid Cu‐Zn Catalyst

MXene-based Ti2C/Ta2C lateral heterostructure: an intrinsic room temperature ferromagnetic material with large magnetic anisotropy

2D Growth of BiSCl as Anisotropic Photodetector with Ultrahigh Responsivity and Detectivity

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A graphene–Mo₂C heterostructure for a highly responsive broadband photodetector

MXene-based Ti₂C/Ta₂C lateral heterostructure: an intrinsic room temperature ferromagnetic material with large magnetic anisotropy