期刊
PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS
卷 14, 期 11, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/pssr.202000408
关键词
gold exfoliation; monolayer transfer; MoS2; scalable exfoliation; transition metal dichalcogenides
资金
- Deutsche Forschungsgemeinschaft (DFG) [182087777-SFB 951]
- HySPRINT Innovation Lab at Helmholtz-Zentrum Berlin
Layered materials like transition metal dichalcogenides (TMDCs) enable exciting new physics in their 2D limit. Combined with successful demonstrations of 2D transistors and devices, the need for high-quality large-scale monolayers increases. In this light, scalable gold-mediated exfoliations attract broad attention to supersede the traditional scotch tape method as a means for high-quality materials. Gold proved to be suitably adhesive for the exfoliation of several 2D materials, including TMDCs. Previously reported methods rely on a simple press and peel mechanism. However, herein, a gold-mediated exfoliation enabled by low-temperature annealing is presented for the first time. This simple modification potentially increases the range of external conditions under which gold-mediated exfoliations operate in a robust manner. The exfoliation achieves scaling with parent crystal areas, rendering it on par with previously reported methods. On top of that, a unique gold-mediated transfer concept is introduced, where gold is repurposed as a metallic (polymer-free) transfer membrane. The transfer allows the deterministic and clean relocation of the exfoliated monolayers onto technologically relevant substrates like SiO2/Si. The process is benchmarked using MoS(2)as the prototypical TMDC and monolayer areas up to approximate to 80 mm(2)are successfully exfoliated and transferred.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据