Conversion of Amorphous Carbon on Silicon Nanostructures into Similar Shaped Semi-Crystalline Graphene Sheets
Conversion of Amorphous Carbon on Silicon Nanostructures into Similar Shaped Semi-Crystalline Graphene Sheets
复制标题
硅纳米结构上的非晶碳转化为相似形状的半晶石墨烯片
DOI：
10.1166/jnn.2021.19329
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发表时间：
2021
影响因子：
--
通讯作者：
Fukata Naoki
中科院分区：
文献类型：
--
作者：
Wallace Steaphan M.;Subramani Thiyagu;Jevasuwan Wipakorn;Fukata Naoki
利用无定形碳源在具有硅纳米线的硅基板上形成显示部分结晶度和纳米线结构的石墨烯片。通过分解聚合物前体将碳源沉积到硅纳米结构基底上，并在相对低温的惰性气体退火过程中通过镍催化剂结晶。所得的独立式石墨烯基材料在催化剂去除后可以保留在基底表面上，或者可以作为单独的膜去除。该薄膜具有柔性、连续性，并且非常模仿硅纳米结构。这是继对类似的固体碳前体衍生的半结晶石墨烯合成程序的研究并将其应用于复杂的硅纳米结构。这项工作检查了碳的进展，发现它迁移通过薄膜催化剂并仅在另一侧形成石墨烯，并且该过程可以成功地用于形成 3D 形状的石墨烯薄膜。半结晶石墨烯具有作为柔性透明电极的可能应用，并且3D成型开启了更复杂的配置和应用的可能性。
Graphene sheets displaying partial crystallinity and nanowire structures were formed on a silicon substrate with silicon nanowires by utilizing an amorphous carbon source. The carbon source was deposited onto the silicon nanostructured substrate by breaking down a polymer precursor and was crystallized by a nickel catalyst during relatively low temperature inert gas annealing. The resulting free-standing graphene-based material can remain on the substrate surface after catalyst removal or can be removed as a separate film. The film is flexible, continuous, and closely mimics the silicon nanostructure. This follows research on similar solid carbon precursor derived semi-crystalline graphene synthesis procedures and applies it to complex silicon nanostructures. This work examined the progression of the carbon, finding that it migrates through the thin film catalyst and forms the graphene only on the other side, and that the process can successfully be used to form 3D shaped graphene films. Semi-crystalline graphene has the possible application of being flexible transparent electrodes, and the 3D shaping opens the possibility of more complex configurations and applications.