4.8 Article

Defect-Free Mechanical Graphene Transfer Using n-Doping Adhesive Gel Buffer

期刊

ACS NANO
卷 15, 期 7, 页码 11276-11284

出版社

AMER CHEMICAL SOC
DOI: 10.1021/acsnano.0c10798

关键词

graphene; defect-free transfer; electron doping; adhesive gel buffer layer; charge transfer

资金

  1. National Research Foundation of Korea (NRF) - Korean government (MSIT) [NRF-2021R1A2C2013378, 2020R1C1C1009381]
  2. National Research Foundation of Korea [4199990514093, 2020R1C1C1009381] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)

向作者/读者索取更多资源

Using a multifunctional viscoelastic polymer gel as a shock-free adhesive and dopant layer, a defect-free, etchant-free, wrinkle-free, and large-area graphene transfer method has been demonstrated. The thermally cured soft gel interacts with graphene through strong charge-transfer interaction and excellent shock absorption, allowing for direct mechanical exfoliation of graphene from the substrate without wrinkles. The transferred graphene layer shows high mechanical and chemical stabilities, making this gel-assisted mechanical transfer method a potential solution for large-scale graphene synthesis and next-generation electronics applications.
The synthesis of uniform low-defect graphene on a catalytic metal substrate is getting closer to the industrial level. However, its practical application is still challenging due to the lack of an appropriate method for its scalable damage-free transfer to a device substrate. Here, an efficient approach for a defect-free, etchant-free, wrinkle-free, and large-area graphene transfer is demonstrated by exploiting a multifunctional viscoelastic polymer gel as a simultaneous shock-free adhesive and dopant layer. Initially, an amine-rich polymer solution in its liquid form allows for conformal coating on a graphene layer grown on a Cu substrate. The subsequent thermally cured soft gel enables the shock-free and wrinkle-free direct mechanical exfoliation of graphene from a substrate due to its strong charge-transfer interaction with graphene and excellent shock absorption. The adhesive gel with a high optical transparency works as an electron doping layer toward graphene, which exhibits significantly reduced sheet resistances without optical transmittance loss. Lastly, the transferred graphene layer shows high mechanical and chemical stabilities under the repeated bending test and exposure to various solvents. This gel-assisted mechanical transfer method can be a solution to connect the missing part between large-scale graphene synthesis and next-generation electronics and optoelectronic applications.

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。

评论

主要评分

4.8
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据