Tailoring the thermal and electrical transport properties of graphene films by grain size engineering
文献类型：期刊论文
| 作者 | Ma, Teng ; Liu, Zhibo ; Wen, Jinxiu ; Gao, Yang ; Ren, Xibiao ; Chen, Huanjun ; Jin, Chuanhong ; Ma, Xiu-Liang ; Xu, Ningsheng ; Cheng, Hui-Ming ; Ren, Wencai |
| 刊名 | NATURE COMMUNICATIONS
 |
| 出版日期 | 2017-02-16 |
| 卷号 | 8页码:- |
| ISSN号 | 2041-1723 |
| 通讯作者 | Cheng, HM ; Ren, WC (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China. |
| 中文摘要 | Understanding the influence of grain boundaries (GBs) on the electrical and thermal transport properties of graphene films is essentially important for electronic, optoelectronic and thermoelectric applications. Here we report a segregation-adsorption chemical vapour deposition method to grow well-stitched high-quality monolayer graphene films with a tunable uniform grain size from similar to 200 nm to similar to 1 mu m, by using a Pt substrate with medium carbon solubility, which enables the determination of the scaling laws of thermal and electrical conductivities as a function of grain size. We found that the thermal conductivity of graphene films dramatically decreases with decreasing grain size by a small thermal boundary conductance of similar to 3.8 x 10(9) Wm(-2) K-1, while the electrical conductivity slowly decreases with an extraordinarily small GB transport gap of similar to 0.01 eV and resistivity of similar to 0.3 k Omega mu m. Moreover, the changes in both the thermal and electrical conductivities with grain size change are greater than those of typical semiconducting thermoelectric materials. |
| 学科主题 | Multidisciplinary Sciences |
| 收录类别 | SCI |
| 资助信息 | Ministry of Science and Technology of China [2016YFA0200101]; National Science Foundation of China [51325205, 51290273, 51521091, 51172240, 51222202]; Chinese Academy of Sciences [KGZD-EW-303-1, KGZD-EW-T06] |
| 语种 | 英语 |
| 公开日期 | 2017-08-17 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/78288]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | Ma, Teng,Liu, Zhibo,Wen, Jinxiu,et al. Tailoring the thermal and electrical transport properties of graphene films by grain size engineering[J]. NATURE COMMUNICATIONS,2017,8:-. |
| APA | Ma, Teng.,Liu, Zhibo.,Wen, Jinxiu.,Gao, Yang.,Ren, Xibiao.,...&Ren, Wencai.(2017).Tailoring the thermal and electrical transport properties of graphene films by grain size engineering.NATURE COMMUNICATIONS,8,-. |
| MLA | Ma, Teng,et al."Tailoring the thermal and electrical transport properties of graphene films by grain size engineering".NATURE COMMUNICATIONS 8(2017):-. |
入库方式： OAI收割
来源：金属研究所
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