Layer dependent direct tunneling behaviors through two dimensional titania nanosheets
文献类型：期刊论文
| 作者 | Pu, Yayun1,2,4; Xie, Xiong1,3; Wang, Liang3 ; Shen, Jun1
|
| 刊名 | COMPUTATIONAL MATERIALS SCIENCE
 |
| 出版日期 | 2020-02-15 |
| 卷号 | 173页码:5 |
| 关键词 | Two dimensional oxides Titania nanosheet Electron tunneling WKB approximation |
| ISSN号 | 0927-0256 |
| DOI | 10.1016/j.commatsci.2019.109398 |
| 通讯作者 | Wang, Liang(wangliang@cigit.ac.cn) ; Shen, Jun(shenjun@cqu.edu.cn) |
| 英文摘要 | Two dimensional titania nanosheets are drawing increasing attention in academic and industrial community because of their versatile properties. The elucidation of the electron tunneling effect through their intrinsic metal-oxide-metal (MOM) atomic structures is imperative to further advance their applications as atomic dielectrics and memristors. The direct tunneling behaviors through Ti1-delta O24 delta- nanosheets sandwiched by two metal electrodes are studied by a modified WKB approximation and conformed by ab-initio calculation. Our results show that the tunneling current density depends exponentially on the stack number of dielectric Ti1-delta O24 delta- layers, decreases by 3-4 orders of magnitude for each layer addition, varying from 10(6) to 10(-8) A/cm(2) in one- to five-layer MOM structures. Also, it is highlighted that the localized intercalation charges naturally embedded in chemically-derived Ti1-delta O24 delta- nanosheets could reduce tunneling current by 3 orders of magnitude and that a thickness threshold of three layers (similar to 2 nm) exists as to the titania nanosheets not to exceed a gate current density of 1 A/cm(2) at 1 V. The present method could be extended to better clarify the electron tunneling behaviors in other two-dimensional gate dielectrics. |
| 资助项目 | National Natural Science Foundation of China[21875245] ; Fundamental Research Funds for the Central Universities of China[2018CDGFCL0003] ; Industry Joint Technology Innovation Project of Suzhou of China |
| WOS研究方向 | Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000506172700033 |
| 出版者 | ELSEVIER |
| 源URL | [http://119.78.100.138/handle/2HOD01W0/10183]  |
| 专题 | 中国科学院重庆绿色智能技术研究院 |
| 通讯作者 | Wang, Liang; Shen, Jun |
| 作者单位 | 1.Chongqing Univ, Coll Mat Sci & Engn, State Key Lab Mech Transmiss, Chongqing 400044, Peoples R China 2.Univ Birmingham, Sch Chem, Birmingham B15 2TT, W Midlands, England 3.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China 4.Southern Univ Sci & Technol, Dept Chem, 1088 Xueyuan Blvd, Shenzhen 518055, Guangdong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Pu, Yayun,Xie, Xiong,Wang, Liang,et al. Layer dependent direct tunneling behaviors through two dimensional titania nanosheets[J]. COMPUTATIONAL MATERIALS SCIENCE,2020,173:5. |
| APA | Pu, Yayun,Xie, Xiong,Wang, Liang,&Shen, Jun.(2020).Layer dependent direct tunneling behaviors through two dimensional titania nanosheets.COMPUTATIONAL MATERIALS SCIENCE,173,5. |
| MLA | Pu, Yayun,et al."Layer dependent direct tunneling behaviors through two dimensional titania nanosheets".COMPUTATIONAL MATERIALS SCIENCE 173(2020):5. |
入库方式： OAI收割
来源：重庆绿色智能技术研究院
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。