材料科学
催化作用
基质(水族馆)
化学工程
异质结
纳米技术
光电子学
有机化学
化学
海洋学
工程类
地质学
作者
Minghui Li,Qing Zhang,Li Lin,Zhongyuan Han,Wei Gao,Haowen Ren,Dechao Geng,Wenping Hu
标识
DOI:10.1002/adfm.202316159
摘要
Abstract 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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