Large-area, high-quality monolayer graphene from polystyrene at atmospheric pressure

Large-area, high-quality monolayer graphene from polystyrene at atmospheric pressure
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在大气压下由聚苯乙烯制成的大面积、高质量单层石墨烯

DOI:
10.1088/1361-6528/aa6235
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发表时间:
2017-03
期刊:
影响因子:
3.5
通讯作者:
Liu Jiangfeng
Liu Jiangfeng
中科院分区:
材料科学3区
文献类型:
--
作者:
Xu Junqi;Fu Can;Sun Haibin;Meng Lanxiang;Xia Yanjie;Zhang Chongwu;Yi Xiaolei;Yang Wenchao;Guo Pengfei;Wang Chunlei;Liu Jiangfeng

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石墨烯薄膜以其独特的物理性质引起了人们的极大兴趣。本文提出了一种在铜箔上用聚苯乙烯在短时间内(3min)通过常压化学气相沉积制备大面积单层石墨烯(覆盖率为97.5%)的有效方法。利用拉曼光谱、透射电子显微镜和扫描电子显微镜对石墨烯薄膜的厚度和均匀性进行了表征。玻璃衬底上的石墨烯薄膜具有高的光学透过率和导电性。磁输运研究表明,单层石墨烯在25K下的载流子迁移率为3395cm2 V−1 S−1。在此基础上,我们的方法是一种简单、安全和通用的合成单层石墨烯的方法。
Graphene films have been attracting great interest owing to their unique physical properties. In this paper, we develop an efficient method to prepare large-area monolayer graphene (97.5% coverage) by atmospheric pressure chemical vapor deposition on Cu foils using polystyrene in a short time (3 min). Raman spectroscopy, transmission electron microscopy and scanning electron microscopy are employed to confirm the thickness and uniformity of the graphene films. Graphene films on glass substrates show high optical transmittance and electrical conductivity. Magnetic transport studies demonstrate that the as-grown monolayer graphene exhibits a high carrier mobility of 3395 cm2 V−1 s−1 at 25 K. On the basis of the analysis, it is concluded that our method is a simple, safe and versatile approach for the synthesis of monolayer graphene.
DOI: 10.1126/science.1156965
发表时间: 2008-06-06
期刊: SCIENCE
影响因子: 56.9
作者:
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