Resonant raman spectroscopy study of swift heavy ion irradiated mos2
文献类型：期刊论文
| 作者 | Guo, Hang1,2; Sun, Youmei1; Zhai, Pengfei1; Zeng, Jian1; Zhang, Shengxia1,2; Hu, Peipei1,2; Yao, Huijun1; Duan, Jinglai1; Hou, Mingdong1; Liu, Jie1 |
| 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 |
| 关键词 | Resonant raman spectroscopy Molybdenum disulphide Swift heavy ion irradiation |
| ISSN号 | 0168-583X |
| DOI | 10.1016/j.nimb.2016.05.018 |
| 通讯作者 | Liu, jie(j.liu@impcas.ac.cn) |
| 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 |
| WOS研究方向 | Instruments & Instrumentation ; Nuclear Science & Technology ; Physics |
| WOS类目 | Instruments & Instrumentation ; Nuclear Science & Technology ; Physics, Atomic, Molecular & Chemical ; Physics, Nuclear |
| 语种 | 英语 |
| WOS记录号 | WOS:000380082700001 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2374450 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Liu, Jie |
| 作者单位 | 1.Chinese Acad Sci, Inst Modern Phys, Nanchang Rd 509, Lanzhou 730000, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Guo, Hang,Sun, Youmei,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 | Guo, Hang.,Sun, Youmei.,Zhai, Pengfei.,Zeng, Jian.,Zhang, Shengxia.,...&Liu, Jie.(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 | Guo, Hang,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. |
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来源：中国科学院大学
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