Chloride-intercalated continuous chemical vapor deposited graphene film with discrete adlayers

作     者：Qiao Chen Li Zhang Hongwei Zhu 

作者机构：State Key Lab of New Ceramics and Fine Processing School of Materials Science and Engineering Tsinghua University Beijing 100084 China Center for Nano and Micro Mechanics Tsinghua University Beijing 100084 China 

出 版 物：《Nano Research》 (纳米研究（英文版）)

年 卷 期：2018年第11卷第1期

页      面：440-448页

核心收录：

学科分类：0810[工学-信息与通信工程] 081702[工学-化学工艺] 0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 0817[工学-化学工程与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 081002[工学-信号与信息处理] 0702[理学-物理学] 

基　　金：国家自然科学基金 中国博士后科学基金 

主　　题：intercalation,graphene,chemical vapor deposition,iron chloride 

摘      要：Heteroatom doping can open the bandgap and increase the carrier density, thus extending the applications of graphene. Iron chloride （FeC13） intercalation has proven to be an efficient method for the heavy doping of graphene. In this study, we prepared continuous chemical vapor deposited graphene （CVD-G） consisting of hexagonal adlayer domains to study the FeC13 intercalation. The structure of the FeC13-treated CVD-G was easily characterized via atomic force microscopy because of the change in the interlayer distance. FeC13 crystals several nanometers thick were integrated with the graphene surface, and FeC13 layer flakes were intercalated between the CVD-G adlayers. The G-band position and two-dimensional band shape in the Raman spectra confirmed the intercalation of the FeC13 between the graphene layers. The FeCI~ intercalation increased the electrical conductivity of the CVD-G with a well-maintained transmittance, which could be beneficial for a sensitive photodetector.