| Title | Doping modulated in-plane anisotropic Raman enhancement on layered ReS2 |
| Authors | Zhang, Na Lin, Jingjing Zhang, Shuqing Zhang, Shishu Li, Xiaobo Liu, Dongyan Xu, Hua Zhang, Jin Tong, Lianming |
| Affiliation | Peking Univ, Beijing Sci & Engn Ctr Nanocarbons, Beijing Natl Lab Mol Sci, Coll Chem & Mol Engn,Ctr Nanochem, Beijing 100871, Peoples R China Shaanxi Normal Univ, Sch Mat Sci & Engn, Xian 710119, Shaanxi, Peoples R China |
| Keywords | ReS2 anisotropy charge transfer Raman enhancement electrons doping |
| Issue Date | 2019 |
| Publisher | NANO RESEARCH |
| Abstract | Anisotropic two-dimensional (2D) materials exhibit lattice-orientation dependent optical and electrical properties. Carriers doping of such materials has been used to modulate their energy band structures for opto-electronic applications. Herein, we show that by stacking monolayer rhenium disulfide (ReS2) on a flat gold film, the electrons doping in ReS2 can affect the in-plane anisotropic Raman enhancement of molecules adsorbed on ReS2. The change of enhancement factor and the degree of anisotropy in enhancement with layer number are sensitively dependent on the doping level of ReS2 by gold, which is further confirmed by Kelvin probe force microscopy (KPFM) measurements. These findings could open an avenue for probing anisotropic electronic interactions between molecules and 2D materials with low symmetry using Raman enhancement effect. |
| URI | http://hdl.handle.net/20.500.11897/550388 |
| ISSN | 1998-0124 |
| DOI | 10.1007/s12274-018-2254-y |
| Indexed | SCI(E) EI |
| Appears in Collections: | å å¦ä¸ å å å·¥ç¨ å¦é ¢ |
