Unraveling the Raman Enhancement Mechanism on 1T′-Phase ReS2Nanosheets

doi:10.1002/smll.201704079

	Unraveling the Raman Enhancement Mechanism on 1T′-Phase ReS2Nanosheets
	Miao, Peng 1; Qin, Jing-Kai 2; Shen, Yunfeng 1; Su, Huimin 3; Dai, Junfeng 3; Song, Bo 4; Du, Yunchen 1; Sun, Mengtao 5; Zhang, Wei6 ; Wang, Hsing-Lin 3
刊名	Small
	2018
卷号	14 期号:14
ISSN号	16136810
DOI	10.1002/smll.201704079
英文摘要	2D transition metal dichalcogenides materials are explored as potential surface-enhanced Raman spectroscopy substrates. Herein, a systematic study of the Raman enhancement mechanism on distorted 1T (1T′) rhenium disulfide (ReS2) nanosheets is demonstrated. Combined Raman and photoluminescence studies with the introduction of an Al2O3dielectric layer unambiguously reveal that Raman enhancement on ReS2materials is from a charge transfer process rather than from an energy transfer process, and Raman enhancement is inversely proportional while the photoluminescence quenching effect is proportional to the layer number (thickness) of ReS2nanosheets. On monolayer ReS2film, a strong resonance-enhanced Raman scattering effect dependent on the laser excitation energy is detected, and a detection limit as low as 10−9m can be reached from the studied dye molecules such as rhodamine 6G and methylene blue. Such a high enhancement factor achieved through enhanced charge interaction between target molecule and substrate suggests that with careful consideration of the layer-number-dependent feature and excitation-energy-related resonance effect, ReS2is a promising Raman enhancement platform for sensing applications. © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
电子版国际标准刊号	16136829
语种	英语
内容类型	期刊论文
源URL	[http://119.78.100.138/handle/2HOD01W0/7997]
专题	中国科学院重庆绿色智能技术研究院
作者单位	1.MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin; 150001, China; 2.School of Materials Science and Engineering, Harbin Institute of Technology, Harbin; 150001, China; 3.Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen; 518055, China; 4.Academy of Fundamental and Interdisciplinary Sciences, Department of Physics, Harbin Institute of Technology, Harbin; 150001, China; 5.Beijing Key Laboratory for Magneto-Photoelectrical Composite and Interface Science, Center for Green Innovation, School of Mathematics and Physics, University of Science and Technology, Beijing; 100083, China; 6.Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing; 400714, China
推荐引用方式 GB/T 7714	Miao, Peng,Qin, Jing-Kai,Shen, Yunfeng,et al. Unraveling the Raman Enhancement Mechanism on 1T′-Phase ReS2Nanosheets[J]. Small,2018,14(14).
APA	Miao, Peng.,Qin, Jing-Kai.,Shen, Yunfeng.,Su, Huimin.,Dai, Junfeng.,...&Xu, Ping.(2018).Unraveling the Raman Enhancement Mechanism on 1T′-Phase ReS2Nanosheets.Small,14(14).
MLA	Miao, Peng,et al."Unraveling the Raman Enhancement Mechanism on 1T′-Phase ReS2Nanosheets".Small 14.14(2018).