Ultrafast frequency-agile terahertz devices using methylammonium lead halide perovskites

doi:10.1126/sciadv.aar7353

CORC > 化学研究所 > 中国科学院化学研究所

	Ultrafast frequency-agile terahertz devices using methylammonium lead halide perovskites
	Chanana, Ashish 1; Liu, Xiaojie 2; Zhang, Chuang 2,3; Vardeny, Zeev Valy 2; Nahata, Ajay 1
刊名	SCIENCE ADVANCES
	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
出版者	AMER ASSOC ADVANCEMENT SCIENCE
WOS记录号	WOS:000432440600041
内容类型	期刊论文
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).