Cooling rate dependence of Ni-catalyzed transformation of amorphous carbon into graphene in rapid thermal processing: An experimental and reactive molecular dynamics study
文献类型：期刊论文
| 作者 | Li, Xiaowei; Li, Hanchao; Lee, Kwang-Ryeol; Wang, Aiying |
| 刊名 | APPLIED SURFACE SCIENCE
 |
| 出版日期 | 2020 |
| 卷号 | 529 |
| 关键词 | HIGH-QUALITY GROWTH FILMS FIELD |
| 英文摘要 | Amorphous carbon with Ni as catalyst can be transformed into graphene on the dielectric substrate directly without the subsequent transfer process during rapid thermal processing (RTP). However, the effect of cooling rate on this transformation process is still not fully understood yet, leading to the controversy of underlying mechanism. Here, by the combined reactive molecular dynamics simulation with experimental approach, we investigated the evolution of RTP graphene structure and diffusion behavior of C atoms with cooling rates. Results demonstrated that for each case, there were no C atoms precipitated from C-Ni intermixing layer during the cooling process, which was different from the behavior observed in the Ni-catalyzed CVD growth process of graphene. This confirmed that the a-C-to-graphene transformation mechanism during the RTP process was dominated by the C diffusion and Ni-induced crystallization rather than the traditional dissolution/precipitation mechanism for graphene growth. Most importantly, it was also found that tailoring the cooling rate could achieve the regular arrangement of distorted structure in as-grown RTP graphene and thus promote the high-quality synthesis of graphene, which was confirmed by the experimental result. |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/22518]  |
| 专题 | 中国科学院宁波材料技术与工程研究所 2020专题_期刊论文 2021专题_期刊论文 |
| 作者单位 | 1.Li, XW 2.Wang, AY (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Key Lab Marine Mat & Related Technol, Zhejiang Key Lab Marine Mat & Protect Technol, Ningbo 315201, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Li, Xiaowei,Li, Hanchao,Lee, Kwang-Ryeol,et al. Cooling rate dependence of Ni-catalyzed transformation of amorphous carbon into graphene in rapid thermal processing: An experimental and reactive molecular dynamics study[J]. APPLIED SURFACE SCIENCE,2020,529. |
| APA | Li, Xiaowei,Li, Hanchao,Lee, Kwang-Ryeol,&Wang, Aiying.(2020).Cooling rate dependence of Ni-catalyzed transformation of amorphous carbon into graphene in rapid thermal processing: An experimental and reactive molecular dynamics study.APPLIED SURFACE SCIENCE,529. |
| MLA | Li, Xiaowei,et al."Cooling rate dependence of Ni-catalyzed transformation of amorphous carbon into graphene in rapid thermal processing: An experimental and reactive molecular dynamics study".APPLIED SURFACE SCIENCE 529(2020). |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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