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Resonant Raman spectroscopy study of swift heavy ion irradiated MoS2

文献类型：期刊论文

作者Zeng, Jian2; Guo, Hang1,2; Zhai, Pengfei2; Sun, Youmei2; Liu, Jie2; Hou, Mingdong2; Duan, Jinglai2; Yao, Huijun2; Hu, Peipei1,2; Zhang, Shengxia1,2
刊名NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
出版日期2016-08-15
卷号381页码:1-5
ISSN号0168-583X
关键词Resonant Raman spectroscopy Molybdenum disulphide Swift heavy ion irradiation
DOI10.1016/j.nimb.2016.05.018
英文摘要Molybdenum disulphide (MoS2) crystal samples were irradiated by swift heavy ions (Bi-209 and Fe-56). Hillock-like latent tracks were observed on the surface of irradiated MoS2 by atomic force microscopy. The modifications of properties of irradiated MoS2 were investigated by resonant Raman spectroscopy and ultraviolet-visible spectroscopy (UV-Vis). A new peak (E-1u(2), 385.7 cm(-1)) occurs near the in-plane E-2g(1) peak (similar to 383.7 cm-1) after irradiation. The two peaks shift towards lower frequency and broaden due to structural defects and stress with increasing fluence. When irradiated with high fluence, two other new peaks appear at similar to 190 and similar to 230 cm(-1). The peak at similar to 230 cm(-1) is disorder-induced LA(M) mode. The presence of this mode indicates defects induced by irradiation. The feature at similar to 460 cm(-1) is composed of 2LA(M) (similar to 458 cm(-1)) and A(2u) (similar to 466 cm(-1)) mode. With increasing fluence, the integrated intensity ratio between 2LA(M) and A(2u), increases. The relative enhancement of 2LA(M) mode is in agreement with the appearance of LA(M) mode, which both demonstrate structural disorder in irradiated MoS2. The similar to 423-cm(-1) peak shifts toward lower frequency due to the decrease in exciton energy of MoS2, and this was demonstrated by the results of UV-Vis spectra. The decrease in exciton energy could be due to introduction of defect levels into band gap. (C) 2016 Elsevier B.V. All rights reserved.
WOS关键词LATTICE-DYNAMICS ; NEUTRON-SCATTERING ; MONOLAYER MOS2 ; GRAPHITE
资助项目National Natural Science Foundation of China[11179003] ; National Natural Science Foundation of China[11405229] ; National Natural Science Foundation of China[11175221] ; National Natural Science Foundation of China[11275237]
WOS研究方向Instruments & Instrumentation ; Nuclear Science & Technology ; Physics
语种英语
出版者ELSEVIER SCIENCE BV
WOS记录号WOS:000380082700001
资助机构National Natural Science Foundation of China
源URL[http://119.78.100.186/handle/113462/43100]  
专题近代物理研究所_材料研究中心
通讯作者Liu, Jie
作者单位1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
2.Chinese Acad Sci, Inst Modern Phys, Nanchang Rd 509, Lanzhou 730000, Peoples R China
推荐引用方式
GB/T 7714		 Zeng, Jian,Guo, Hang,Zhai, Pengfei,et al. Resonant Raman spectroscopy study of swift heavy ion irradiated MoS2[J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS,2016,381:1-5.
APA Zeng, Jian.,Guo, Hang.,Zhai, Pengfei.,Sun, Youmei.,Liu, Jie.,...&Zhang, Shengxia.(2016).Resonant Raman spectroscopy study of swift heavy ion irradiated MoS2.NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS,381,1-5.
MLA Zeng, Jian,et al."Resonant Raman spectroscopy study of swift heavy ion irradiated MoS2".NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS 381(2016):1-5.

入库方式： OAI收割

来源：近代物理研究所

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