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Synthesis of Nitrogen-Doped Graphene via Thermal Annealing Graphene with Urea
Xin-jing Li,Xin-xin Yu,Jin-yang Liu,Xiao-dong Fan,Kun Zhang,Hong-bing Cai,Nan Pan,Xiao-ping Wang*
Author NameAffiliationE-mail
Xin-jing Li Department of Physics, University of Science and Technology of China, Hefei 230026, China  
Xin-xin Yu Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Tech-nology of China, Hefei 230026, China  
Jin-yang Liu Department of Physics, University of Science and Technology of China, Hefei 230026, China  
Xiao-dong Fan Department of Physics, University of Science and Technology of China, Hefei 230026, China  
Kun Zhang Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Tech-nology of China, Hefei 230026, China  
Hong-bing Cai Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Tech-nology of China, Hefei 230026, China  
Nan Pan Department of Physics, University of Science and Technology of China, Hefei 230026, China  
Xiao-ping Wang* Department of Physics, University of Science and Technology of China, Hefei 230026, ChinaHefei National Laboratory for Physical Sciences at the Microscale, University of Science and Tech-nology of China, Hefei 230026, China xpwang@ustc.edu.cn 
Abstract:
Chemical doping is an effective method to intrinsically modify the chemical and electronic property of graphene. We propose a novel approach to synthesize the nitrogen-doped graphene via thermal annealing graphene with urea, in which the nitrogen source can be controllably released from the urea by varying the annealed temperature and time. The doped N content and the configuration N as well as the thermal stabilities are also evaluated with X-ray photoelectron spectroscopy and Raman spectra. Electrical measurements indi-cate that the conductivity of doped graphene can be well regulated with the N content. The method is expected to produce large scale and controllable N-doped graphene sheets for a variety of potential applications.
Key words:  Graphene, Doping, Conductivity, X-ray photoelectron spectroscopy, Raman spectrum
FundProject:
利用尿素热退火方法制备氮掺杂石墨
李新静,于欣欣,刘金养,范晓东,张琨,蔡洪冰,潘楠,王晓平*
摘要:
在尿素气氛中,通过热退火实验实现石墨烯的氮掺杂. 结合光电子能谱和拉曼光谱,确定了氮在石墨烯中的掺杂构型,并发现掺杂量可以通过退火温度和时间加以调控. 电性测量表明掺杂石墨烯的电导同氮掺杂量有很好的关联性.
关键词:  石墨烯,掺杂,电导,光电子能谱,拉曼光谱
DOI:10.1088/1674-0068/25/03/325-329
分类号: