Two-Dimensional Molybdenum Tungsten Diselenide Alloys: Photoluminescence, Raman Scattering, and Electrical Transport
文献类型：期刊论文
| 作者 | Zhang, Mei1; Wu, Juanxia2,3; Zhu, Yiming1; Dumcenco, Dumitru O.4; Hong, Jinhua5,6; Mao, Nannan1,2; Deng, Shibin2; Chen, Yanfeng1; Yang, Yanlian1; Jin, Chuanhong5,6 |
| 刊名 | ACS NANO
 |
| 出版日期 | 2014-07-01 |
| 卷号 | 8期号:7页码:7130-7137 |
| 关键词 | Transition-metal Dichalcogenide Semiconductor Alloy Tunable Band Gap Photoluminescence Raman Effect Electrical Property |
| ISSN号 | 1936-0851 |
| DOI | 10.1021/nn5020566 |
| 英文摘要 | Two-dimensional transition-metal dichalcogenide alloys have attracted intense attention doe to their tunable band gaps. In the present work, photoluminescence, Raman scattering, and electrical transport properties of monolayer and few-layer molybdenum tungsten diselenide alloys (Mo1-xWxSe2, 0 <= x <= 1) are systematically investigated. The strong photoluminescence emissions from Mo1-xWxSe2 monolayers indicate composition-tunable direct band gaps (from 156 to 1.65 eV), while weak and broad emissions from the bilayers indicate indirect band gaps. The first-order Raman modes are assigned by polarized Raman spectroscopy. Second-order Raman mocks are assigned according to its frequencies. As composition changes in Mo1-xWxSe2 monolayers and few layers, the out-of-plane A(1g) mode showed one-mode behavior, while B-29(1) (only observed in few layers), in-plane E-2g(1), and all observed second-order Raman modes showed two-mode behaviors. Secularl transport measurement revealed n-type semiconducting transport behavior with a high on/off ratio (>10(5)) for Mo1-xWxSe2 monolayers. |
| 语种 | 英语 |
| WOS记录号 | WOS:000339463100068 |
| 出版者 | AMER CHEMICAL SOC |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/43511]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Huang, Ying-Sheng |
| 作者单位 | 1.Natl Ctr Nanosci & Technol, CAS Key Lab Standardizat & Measurement Nanotechno, Beijing 100190, Peoples R China 2.Peking Univ, Ctr Nanochem, Beijing Natl Lab Mol Sci,Coll Chem & Mol Engn, Key Lab Phys & Chem Nanodevices,State Key Lab Str, Beijing 100871, Peoples R China 3.Peking Univ, Acad Adv Interdisciplinary Studies, Beijing 100871, Peoples R China 4.Natl Taiwan Univ Sci & Technol, Dept Elect Engn, Taipei 106, Taiwan 5.Zhejiang Univ, State Key Lab Silicon Mat, Key Lab Adv Mat & Applicat Batteries Zhejiang Pro, Hangzhou 310027, Peoples R China 6.Zhejiang Univ, Dept Mat Sci & Engn, Hangzhou 310027, Peoples R China 7.Sardar Patel Univ, PG Dept Phys, Vallabh Vidyanagar 388120, Gujarat, India |
| 推荐引用方式 GB/T 7714 | Zhang, Mei,Wu, Juanxia,Zhu, Yiming,et al. Two-Dimensional Molybdenum Tungsten Diselenide Alloys: Photoluminescence, Raman Scattering, and Electrical Transport[J]. ACS NANO,2014,8(7):7130-7137. |
| APA | Zhang, Mei.,Wu, Juanxia.,Zhu, Yiming.,Dumcenco, Dumitru O..,Hong, Jinhua.,...&Xie, Liming.(2014).Two-Dimensional Molybdenum Tungsten Diselenide Alloys: Photoluminescence, Raman Scattering, and Electrical Transport.ACS NANO,8(7),7130-7137. |
| MLA | Zhang, Mei,et al."Two-Dimensional Molybdenum Tungsten Diselenide Alloys: Photoluminescence, Raman Scattering, and Electrical Transport".ACS NANO 8.7(2014):7130-7137. |
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来源：化学研究所
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