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Facile and Controllable Synthesis of Large-Area Monolayer WS2 Flakes Based on WO3 Precursor Drop-Casted Substrates by Chemical Vapor Deposition
文献类型：期刊论文
| 作者 | Shi, Biao1 ; Zhou, Daming1; Fang, Shaoxi1; Djebbi, Khouloud1,2; Feng, Shuanglong1; Zhao, Hongquan1; Tlili, Chaker1; Wang, Deqiang1,2
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| 刊名 | NANOMATERIALS
 |
| 出版日期 | 2019-04-01 |
| 卷号 | 9期号:4页码:12 |
| ISSN号 | 2079-4991 |
| 关键词 | WS2 2D materials large-area CVD fluorescence emission Raman mapping |
| DOI | 10.3390/nano9040578 |
| 通讯作者 | Tlili, Chaker(chakertlili@cigit.ac.cn) ; Wang, Deqiang(dqwang@cigit.ac.cn) |
| 英文摘要 | Monolayer WS2 (Tungsten Disulfide) with a direct-energy gap and excellent photoluminescence quantum yield at room temperature shows potential applications in optoelectronics. However, controllable synthesis of large-area monolayer WS2 is still challenging because of the difficulty in controlling the interrelated growth parameters. Herein, we report a facile and controllable method for synthesis of large-area monolayer WS2 flakes by direct sulfurization of powdered WO3 (Tungsten Trioxide) drop-casted on SiO2/Si substrates in a one-end sealed quartz tube. The samples were thoroughly characterized by an optical microscope, atomic force microscope, transmission electron microscope, fluorescence microscope, photoluminescence spectrometer, and Raman spectrometer. The obtained results indicate that large triangular monolayer WS2 flakes with an edge length up to 250 to 370 m and homogeneous crystallinity were readily synthesized within 5 min of growth. We demonstrate that the as-grown monolayer WS2 flakes show distinctly size-dependent fluorescence emission, which is mainly attributed to the heterogeneous release of intrinsic tensile strain after growth. |
| 资助项目 | National Natural Science Foundation of China[61701474] ; Natural Science Foundation of Chongqing, China[cstc2017jcyjAX0320] ; andWest Light Foundation of CAS |
| WOS研究方向 | Science & Technology - Other Topics ; Materials Science |
| 语种 | 英语 |
| 出版者 | MDPI |
| WOS记录号 | WOS:000467768800094 |
| 源URL | [http://119.78.100.138/handle/2HOD01W0/7904]  |
| 专题 | 精准医疗单分子诊断技术研究中心 量子信息技术研究中心 |
| 通讯作者 | Tlili, Chaker; Wang, Deqiang |
| 作者单位 | 1.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing Key Lab Multi Scale Mfg Technol, Chongqing 400714, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Shi, Biao,Zhou, Daming,Fang, Shaoxi,et al. Facile and Controllable Synthesis of Large-Area Monolayer WS2 Flakes Based on WO3 Precursor Drop-Casted Substrates by Chemical Vapor Deposition[J]. NANOMATERIALS,2019,9(4):12. |
| APA | Shi, Biao.,Zhou, Daming.,Fang, Shaoxi.,Djebbi, Khouloud.,Feng, Shuanglong.,...&Wang, Deqiang.(2019).Facile and Controllable Synthesis of Large-Area Monolayer WS2 Flakes Based on WO3 Precursor Drop-Casted Substrates by Chemical Vapor Deposition.NANOMATERIALS,9(4),12. |
| MLA | Shi, Biao,et al."Facile and Controllable Synthesis of Large-Area Monolayer WS2 Flakes Based on WO3 Precursor Drop-Casted Substrates by Chemical Vapor Deposition".NANOMATERIALS 9.4(2019):12. |
入库方式： OAI收割
来源：重庆绿色智能技术研究院
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