Control of the ultrafast photo-electronic dynamics of a chemical-vapor-deposited-grown graphene by ozone oxidation

doi:10.1364/PRJ.8.000017

CORC > 金属研究所 > 中国科学院金属研究所

	Control of the ultrafast photo-electronic dynamics of a chemical-vapor-deposited-grown graphene by ozone oxidation
	Guo, Min 1; Ma, Lai-Peng 2; Ren, Wencai 2; Lai, Tianshu 1
刊名	PHOTONICS RESEARCH
	2020
卷号	8 期号:1 页码:17-23
ISSN号	2327-9125
DOI	10.1364/PRJ.8.000017
通讯作者	Lai, Tianshu(stslts@mail.sysu.edu.cn)
英文摘要	Diverse ultrafast dynamics have been reported on different graphene prepared by different methods. Chemicalvapor-deposited (CVD) growth is regarded as a very promising method for highly efficient production of graphene. However, CVD-grown graphene usually presents only one of the diverse ultrafast dynamics. Thus, control of the ultrafast photo-electronic dynamics of CVD-grown graphene is vital to present diversity for different photodetection applications of CVD-grown graphene. In this paper, we report on the first realization to our knowledge of control of the ultrafast dynamics of CVD-grown graphene and the manifestation of diverse ultrafast dynamics on sole CVD-grown graphene. We study the ultrafast photoelectronic dynamics of CVD-grown graphene with different degrees of oxidation caused by ozone oxidation using femtosecond time-resolved transient differential transmission spectroscopy, and we find that the ultrafast dynamics can evolve obviously with the time of ozone oxidation. The diverse ultrafast dynamics reported previously on different monolayer graphenes prepared by different methods are achieved on the sole CVD-grown graphene by controlling oxidation time. The mechanism for manipulation of the ultrafast dynamics by ozone oxidation is revealed by Raman spectroscopy as the control of the Fermi level of CVD-grown graphene. Simulations of dynamics based on the optical conductivity model of graphene and Fermi level change well reproduce the observed diverse ultrafast dynamics. Our results are very important for the diverse applications of graphene and open a new path toward the diverse ultrafast dynamics on sole graphene prepared by any method. (C) 2019 Chinese Laser Press
资助项目	National Natural Science Foundation of China[11774438] ; National Natural Science Foundation of China[61475195] ; National Basic Research Program of China (973 Program)[2013CB922403] ; Ministry of Science and Technology of the People's Republic of China[2016YFA0200101] ; Ministry of Science and Technology of the People's Republic of China[2016YFB04001104] ; Chinese Academy of Sciences Key Technology Talent Program[XDB30000000] ; Natural Science Foundation of Guangdong Province[2019A1515011572]
WOS研究方向	Optics
语种	英语
出版者	OPTICAL SOC AMER
WOS记录号	WOS:000511838600003
资助机构	National Natural Science Foundation of China ; National Basic Research Program of China (973 Program) ; Ministry of Science and Technology of the People's Republic of China ; Chinese Academy of Sciences Key Technology Talent Program ; Natural Science Foundation of Guangdong Province
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/137282]
专题	金属研究所_中国科学院金属研究所
通讯作者	Lai, Tianshu
作者单位	1.Sun Yat Sen Univ, State Key Lab Optoelect Mat & Technol, Sch Phys, Guangzhou 510275, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Guo, Min,Ma, Lai-Peng,Ren, Wencai,et al. Control of the ultrafast photo-electronic dynamics of a chemical-vapor-deposited-grown graphene by ozone oxidation[J]. PHOTONICS RESEARCH,2020,8(1):17-23.
APA	Guo, Min,Ma, Lai-Peng,Ren, Wencai,&Lai, Tianshu.(2020).Control of the ultrafast photo-electronic dynamics of a chemical-vapor-deposited-grown graphene by ozone oxidation.PHOTONICS RESEARCH,8(1),17-23.
MLA	Guo, Min,et al."Control of the ultrafast photo-electronic dynamics of a chemical-vapor-deposited-grown graphene by ozone oxidation".PHOTONICS RESEARCH 8.1(2020):17-23.