Graphene mobility enhancement by organosilane interface engineering
Graphene mobility enhancement by organosilane interface engineering
复制标题
通过有机硅烷界面工程增强石墨烯迁移率
DOI:
10.1063/1.4804288
复制
发表时间:
2013-05
影响因子:
4
通讯作者:
Qian, H
中科院分区:
文献类型:
--
作者:
v, H., Wu, H., Xiao, K., Zhu, W., Xu, H., Zhang,;Qian, H
In this study, SiO2 substrates engineered with three different types of organosilane self-assembled monolayers (SAM) have been proven to assist graphene transfer process. Bottom gate graphene field effect transistors with organosilane interface engineering are fabricated and tested. Improvement of carrier mobility is observed, which is attributed to organosilane SAMs' screening effect to charge impurity and surface polarized phonon scatterings and SAM molecules' π-π stacking interaction with graphene. In particular, graphene on phenyl-terminated organosilane SAM shows the best extrinsic field effect mobility of 2500 cm2 v−1 s−1, three times of its counterpart on SiO2.
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