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DOI | 10.1038/s41467-019-09213-x |
Telluriding monolayer MoS2 and WS2 via alkali metal scooter | |
Yun, Seok Joon1,2; Han, Gang Hee1; Kim, Hyun1,2; Dinh Loc Duong1; Shin, Bong Gyu1; Zhao, Jiong3; Quoc An Vu1,2; Lee, Jubok1,2; Lee, Seung Mi4; Lee, Young Hee1,2,5 | |
2019-03-19 | |
发表期刊 | NATURE COMMUNICATIONS
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ISSN | 2041-1723 |
出版年 | 2017 |
卷号 | 8 |
文章类型 | Article |
语种 | 英语 |
国家 | South Korea; Peoples R China |
英文摘要 | The conversion of chalcogen atoms to other types in transition metal dichalcogenides has significant advantages for tuning bandgaps and constructing in-plane heterojunctions; however, difficulty arises from the conversion of sulfur or selenium to tellurium atoms owing to the low decomposition temperature of tellurides. Here, we propose the use of sodium for converting monolayer molybdenum disulfide (MoS2) to molybdenum ditelluride (MoTe2) under Te-rich vapors. Sodium easily anchors tellurium and reduces the exchange barrier energy by scooting the tellurium to replace sulfur. The conversion was initiated at the edges and grain boundaries of MoS2, followed by complete conversion in the entire region. By controlling sodium concentration and reaction temperature of monolayer MoS2, we tailored various phases such as semiconducting 2H-MoTe2, metallic 1T'-MoTe2, and 2H-MoS2-xTex alloys. This concept was further extended to WS2. A high valley polarization of similar to 37% in circularly polarized photoluminescence was obtained in the monolayer WS2-xTex alloy at room temperature. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000418247100012 |
WOS关键词 | VAPOR-DEPOSITION GROWTH ; BAND-GAP ; VALLEY POLARIZATION ; COHERENCE ; LAYERS |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/204263 |
专题 | 资源环境科学 |
作者单位 | 1.IBS, Ctr Integrated Nanostruct Phys, Suwon 16419, South Korea; 2.Sungkyunkwan Univ, Dept Energy Sci, Suwon 16419, South Korea; 3.Hong Kong Polytech Univ, Appl Phys Dept, Hong Kong, Hong Kong, Peoples R China; 4.Korea Res Inst Stand & Sci, Quantum Technol Inst, Daejeon 34113, South Korea; 5.Sungkyunkwan Univ, Dept Phys, Suwon 16419, South Korea |
推荐引用方式 GB/T 7714 | Yun, Seok Joon,Han, Gang Hee,Kim, Hyun,et al. Telluriding monolayer MoS2 and WS2 via alkali metal scooter[J]. NATURE COMMUNICATIONS,2019,8. |
APA | Yun, Seok Joon.,Han, Gang Hee.,Kim, Hyun.,Dinh Loc Duong.,Shin, Bong Gyu.,...&Lee, Young Hee.(2019).Telluriding monolayer MoS2 and WS2 via alkali metal scooter.NATURE COMMUNICATIONS,8. |
MLA | Yun, Seok Joon,et al."Telluriding monolayer MoS2 and WS2 via alkali metal scooter".NATURE COMMUNICATIONS 8(2019). |
条目包含的文件 | 条目无相关文件。 |
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