异质结
材料科学
外延
光致发光
二硒化钨
光电子学
纳米技术
单层
播种
化学
图层(电子)
过渡金属
催化作用
生物化学
工程类
航空航天工程
作者
Xiang Cheng,Yaqing Zhang,Xiumei Yue,Zhuanzhuan Huang,Lifu Zhang,Ming Feng,Fang Liu,Chun‐Hong Gao,Yan Yuan,Xuewen Fu
出处
期刊:iScience
[Elsevier]
日期:2023-11-01
卷期号:26 (11): 108296-108296
标识
DOI:10.1016/j.isci.2023.108296
摘要
Mixed-dimensional heterostructures have drawn significant attention due to their intriguing physical properties and potential applications in electronic and optoelectronic nanodevices. However, limited by the lattice matching, the preparation of heterostructures is experimentally difficult and the underlying growth mechanism has not been well established. Here, we report a three-step seeding epitaxial growth strategy for synthesizing mixed-dimensional heterostructures of one-dimensional microwire (MW) and two-dimensional atomic thin film. Our growth strategy has successfully realized direct epitaxial growth of WSe2 film on WOx MW and significantly improves the quality of the epitaxial WSe2 monolayer, which is evidenced by the remarkably enhanced photoluminescence (PL). More intriguingly, the as-synthesized WOx MWs exhibit a strong nonlinear optical response due to the enhancement effect of the core (WOx)-shell (WSe2) nanocavity. Our work provides a feasible route for direct growth of WOx-based mixed-dimensional heterostructures, which possess potential applications in high-performance optoelectronic devices.
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