| 查看: 900 | 回复: 18 | |||
| 【奖励】 本帖被评价16次，作者海天天意增加金币 12.8 个 | |||
[资源]
ACS Nano11.13 新鲜在线：CVD of High Quality Graphene Films from CO2 Atmospheres
|
|||
|
Chemical Vapor Deposition of High Quality Graphene Films from Carbon Dioxide Atmospheres Andrew James Strudwick1†, Nils Eike Weber1, Matthias Georg Schwab 1, Michel Kettner2,3, R. Thomas Weitz 2,3, Josef R. Wünsch1, Klaus Müllen1,4*, Hermann Sachdev1,4* Abstract The realization of graphene-based, next-generation electronic applications essentially depends on a reproducible, large-scale production of graphene films via chemical vapor deposition (CVD). We demonstrate how key challenges such as uniformity and homogeneity of the copper metal substrate as well as the growth chemistry can be improved by the use of carbon dioxide and carbon dioxide enriched gas atmospheres. Our approach enables graphene film production protocols free of elemental hydrogen and provides graphene layers of superior quality compared to samples produced by conventional hydrogen/methane based CVD processes. The substrates and resulting graphene films were characterized by scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX) and Raman microscopy, sheet resistance and transport measurements. The superior quality of the as-grown graphene films on copper is indicated by Raman maps revealing average G band widths as low as 18 ± 8 cm-1 at 514.5 nm excitation. In addition, high charge carrier mobility’s of up to 1975 cm2/Vs were observed for electrons in transferred films obtained from a carbon dioxide based growth protocol. The enhanced graphene film quality can be explained by the mild oxidation properties of carbon dioxide, which at high temperatures enables an uniform conditioning of the substrates by an efficient removal of preexisting and emerging carbon impurities and a continuous suppression and in-situ etching of carbon of lesser quality being co- deposited during the CVD growth.  000.jpg |
回复此楼» 本帖附件资源列表
-
欢迎监督和反馈：小木虫仅提供交流平台，不对该内容负责。
本内容由用户自主发布，如果其内容涉及到知识产权问题，其责任在于用户本人，如对版权有异议，请联系邮箱：xiaomuchong@tal.com - 附件 1 : Graphene_Films_from_Carbon_Dioxide_Atmospheres.pdf
2014-11-16 21:48:43, 1.45 M
» 收录本帖的淘帖专辑推荐
 纳米材料+光电子学 |
» 猜你喜欢
求助WO3.cif文件 对应PDF卡片 43-1035，单斜晶系 , P21/n 。
已经有2人回复
-
稀土发光分析｜核壳结构｜寿命拟合
已经有13人回复
-
金属材料论文润色/翻译怎么收费?
已经有95人回复
-
稀土发光分析｜核壳结构｜寿命拟合
已经有6人回复
-
稀土发光分析｜核壳结构｜寿命拟合
已经有0人回复
-
稀土发光分析｜核壳结构｜寿命拟合
已经有0人回复
-
26 届青岛大学纺织化学与染整工程硕士（液体纳米分散染料方向）求申博建议
已经有4人回复
-
26 届青岛大学纺织化学与染整工程（液体纳米分散染料）求浙理工纺织 / 材料博导名额
已经有1人回复
-
敢问Acta Pharmaceutica Sinica B with Editor 三周了，能是什么情况？
已经有0人回复
-
求助 CeO2 Fe3O4 Cu2S CoFe2O4 标准卡 Jade 导出的数据
已经有0人回复
» 本主题相关价值贴推荐，对您同样有帮助:
nowitzki_ci
专家顾问 (著名写手)
-
专家经验: +139 - MN-EPI: 17
- 应助: 67 (初中生)
- 金币: 21070.8
- 帖子: 2329
- 在线: 1507.1小时
- 虫号: 1035941
2楼2014-11-16 22:27:41
简单回复
2014-11-17 10:18
回复
五星好评 顶一下，感谢分享！
lwg34楼
2014-11-17 13:01
回复
五星好评 顶一下，感谢分享！
johnzxj5楼
2014-11-17 17:42
回复
五星好评 
2014-11-17 17:53
回复
五星好评 顶一下，感谢分享！
2014-11-17 18:14
回复
五星好评 顶一下，感谢分享！
chenjin8楼
2014-11-18 16:47
回复
五星好评 顶一下，感谢分享！
小蚂蚁19809楼
2014-11-18 20:03
回复
五星好评 顶一下，感谢分享！
gengxin6010楼
2014-11-18 20:48
回复
五星好评 顶一下，感谢分享！
zxh7711楼
2014-11-18 21:54
回复
五星好评 顶一下，感谢分享！
gengxin6012楼
2014-11-18 22:21
回复
顶一下，感谢分享！
gengxin6013楼
2014-11-18 22:25
回复
顶一下，感谢分享！
marchfeng14楼
2014-11-19 01:12
回复
五星好评 顶一下，感谢分享！
QQ00515楼
2014-11-19 14:26
回复
五星好评 顶一下，感谢分享！
fillippo9916楼
2014-11-19 15:21
回复
五星好评 顶一下，感谢分享！
lisuyuan17楼
2014-11-19 22:25
回复
五星好评 顶一下，感谢分享！
毛毛虫毛毛虫18楼
2014-11-20 22:43
回复
五星好评 顶一下，感谢分享！
orrinzh19楼
2014-12-11 21:02
回复
五星好评 顶一下，感谢分享！
5