Ultrafast frequency-agile terahertz devices using methylammonium lead halide perovskites
文献类型：期刊论文
| 作者 | Chanana, Ashish1; Liu, Xiaojie2; Zhang, Chuang2,3; Vardeny, Zeev Valy2; Nahata, Ajay1 |
| 刊名 | SCIENCE ADVANCES
 |
| 出版日期 | 2018-05-01 |
| 卷号 | 4期号:5 |
| ISSN号 | 2375-2548 |
| DOI | 10.1126/sciadv.aar7353 |
| 英文摘要 | The ability to control the response of metamaterial structures can facilitate the development of new terahertz devices, with applications in spectroscopy and communications. We demonstrate ultrafast frequency-agile terahertz metamaterial devices that enable such a capability, in which multiple perovskites can be patterned in each unit cell with micrometer-scale precision. To accomplish this, we developed a fabrication technique that shields already deposited perovskites from organic solvents, allowing for multiple perovskites to be patterned in close proximity. By doing so, we demonstrate tuning of the terahertz resonant response that is based not only on the optical pump fluence but also on the optical wavelength. Because polycrystalline perovskites have subnanosecond photocarrier recombination lifetimes, switching between resonances can occur on an ultrafast time scale. The use of multiple perovskites allows for new functionalities that are not possible using a single semiconducting material. For example, by patterning one perovskite in the gaps of split-ring resonators and bringing a uniform thin film of a second perovskite in close proximity, we demonstrate tuning of the resonant response using one optical wavelength and suppression of the resonance using a different optical wavelength. This general approach offers new capabilities for creating tunable terahertz devices. |
| 语种 | 英语 |
| WOS记录号 | WOS:000432440600041 |
| 出版者 | AMER ASSOC ADVANCEMENT SCIENCE |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/42927]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Vardeny, Zeev Valy; Nahata, Ajay |
| 作者单位 | 1.Univ Utah, Dept Elect & Comp Engn, 50 S Cent Campus Dr, Salt Lake City, UT 84112 USA 2.Univ Utah, Dept Phys & Astron, 115 S 1400 East, Salt Lake City, UT 84112 USA 3.Chinese Acad Sci, Inst Chem, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chanana, Ashish,Liu, Xiaojie,Zhang, Chuang,et al. Ultrafast frequency-agile terahertz devices using methylammonium lead halide perovskites[J]. SCIENCE ADVANCES,2018,4(5). |
| APA | Chanana, Ashish,Liu, Xiaojie,Zhang, Chuang,Vardeny, Zeev Valy,&Nahata, Ajay.(2018).Ultrafast frequency-agile terahertz devices using methylammonium lead halide perovskites.SCIENCE ADVANCES,4(5). |
| MLA | Chanana, Ashish,et al."Ultrafast frequency-agile terahertz devices using methylammonium lead halide perovskites".SCIENCE ADVANCES 4.5(2018). |
入库方式： OAI收割
来源：化学研究所
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