Ultrafast frequency-agile terahertz devices using methylammonium lead halide perovskites

Chanana, Ashish; Liu, Xiaojie; Zhang, Chuang; Vardeny, Z. Valy; Nahata, Ajay

doi:10.1126/sciadv.aar7353

Cited by 61 publications

(46 citation statements)

References 32 publications

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“…Close photogenerated dynamics was observed as well [64]. The density of photoexcited carriers is usually observed up to 10 20 cm −1 that is enough to modulate the tramsmittance of perovskite films up to 10-30 % level for a signal beam at THz frequencies [63], and 0.1 % level for the visible range [65].…”

Section: Dynamic Tunabilitymentioning

confidence: 99%

“…In Ref. [63], the monomolecular recombination lifetime (τ rec =k −1 1 ) for MAPbI 3 ≈ 7.8 ns and for MAPbBr 3 ≈ 0.5 ns at low optical fluence have been measured. At higher fluences, the other contributions are estimated to be: k 3 N 2 ≈ 2.5×10 10 s −1 and k 2 N ≈ 3.1×10 9 s −1 for MAPbI 3 (fs-laser 800-nm pump wavelength with fluence 310 µJ/cm 2 ); k 3 N 2 ≈ 5.5×10 10 s −1 and k 2 N ≈ 8.3×10 9 s −1 for MAPbBr 3 (fs-laser 400-nm pump wavelength with fluence 105 µJ/cm 2 ).…”

Section: Dynamic Tunabilitymentioning

confidence: 99%

“…In Fig. 11(c), more complicated design of perovskite/metasurface combination is presented, where a novel fabrication technique shields already deposited perovskites from organic solvents, allowing for multiple perovskites to be patterned in close proximity [63]. Different bandgap properties of the used hybrid perovskites (MAPbBr 3 and MAPbI 3 ) inserted into gaps of split-ring resonators in the metasurface also allowed for a design of THz devices that exhibit various THz responses.…”

Section: Other Types Of Resonant Structuresmentioning

confidence: 99%

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Halide‐Perovskite Resonant Nanophotonics

Makarov

Furasova

Tiguntseva

et al. 2018

Advanced Optical Materials

161

130

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Halide perovskites have emerged recently as promising materials for many applications in photovoltaics and optoelectronics. Recent studies of their optical properties suggest many novel opportunities for a design of advanced nanophotonic devices due to low-cost fabrication, high values of the refractive index, existence of excitons at room temperatures, broadband bandgap tunability, high optical gain and nonlinear response, as well as simplicity of their integration with other types of structures. This paper provides an overview of the recent progress in the study of optical effects originating from nanostructured perovskites, including their potential applications.

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Section: Dynamic Tunabilitymentioning

confidence: 99%

Section: Dynamic Tunabilitymentioning

confidence: 99%

Section: Other Types Of Resonant Structuresmentioning

confidence: 99%

See 1 more Smart Citation

Halide‐Perovskite Resonant Nanophotonics

Makarov

Furasova

Tiguntseva

et al. 2018

Advanced Optical Materials

161

130

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show abstract

“…This has been quite a challenge with 2D sheets of graphene where extensive efforts have been made to reduce the degradation of mobility and τ due to lithographic process [36]. Here, we circumvent the need for developing an etching process for Cd3As2 by adopting our unique approach of depositing on to patterned polymer films and subsequently delaminating the polymer, as demonstrated recently [40]. The non-destructive (solvent and wet-process free) approach and the fact that Cd3As2 deposition is reserved as the last step before polymer peel-off, ensures the same quality of Cd3As2 as obtained in un-patterned films.…”

Section: (A) Captures the Effect Of Intra-band Transitions Excited Bymentioning

confidence: 99%

Manifestation of Kinetic Inductance in Terahertz Plasmon Resonances in Thin-Film Cd₃As₂

et al. 2019

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Three-dimensional (3D) semimetals have been predicted and demonstrated to have a wide variety of interesting properties associated with its linear energy dispersion. In analogy to twodimensional (2D) Dirac semimetals, such as graphene, Cd3As2, a 3D semimetal, has shown ultrahigh mobility, large Fermi velocity, and has been hypothesized to support plasmons at terahertz frequencies. In this work, we demonstrate synthesis of high-quality large-area Cd3As2 thin-films through thermal evaporation as well as the experimental realization of plasmonic structures consisting of periodic arrays of Cd3As2 stripes. These arrays exhibit sharp resonances at terahertz frequencies with associated quality-factors (Q) as high as ~ 3.7. Such spectrally-narrow resonances can be understood on the basis of a large kinetic-inductance, resulting from a long momentum scattering time, which in our films can approach ~1 ps at room-temperature.Moreover, we demonstrate an ultrafast tunable response through excitation of photo-induced 2 carriers in optical pump / terahertz probe experiments. Our results evidence that the intrinsic 3D nature of Cd3As2 provides for a very robust platform for terahertz plasmonic applications. Overall, our observations pave a way for the development of myriad terahertz (opto) electronic devices based on Cd3As2 and other 3D Dirac semimetals, benefiting from strong coupling of terahertz radiation, ultrafast transient response, magneto-plasmon properties, etc. Moreover, the long momentum scattering time, thus large kinetic inductance in Cd3As2, also holds enormous potential for the re-design of passive elements such as inductors and hence can have a profound impact in the field of RF integrated circuits.

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“…Many other materials showing dynamic THz responses applicable to active THz modulation also exist, such as NbO 2 , [211] InSb, [212,213] QWs, [214] titanium oxides, [215] orthoferrites, [216][217][218] rare-earth nickelates, [219][220][221] manganites, [222][223][224] topological insulators, [225][226][227] multiferroics, [228] molecular crystals, [229,230] medicines, [231] polymers, [232][233][234][235][236][237][238] and halide perovskites, [239][240][241][242][243][244][245][246] to name but a few. Considering the diversity of the material properties and the control mechanisms, plasmonic hybridization may bring about new possibilities for a wide variety of active THz devices.…”

Section: Potential Candidatesmentioning

confidence: 99%

Dynamic Terahertz Plasmonics Enabled by Phase‐Change Materials

Jeong

Bahk

Kim

2019

Advanced Optical Materials

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Phase‐change phenomena have been an attractive research theme for decades due to the dynamic transition of material properties providing extraordinary capabilities for versatile optical device applications. Even at the terahertz (THz) frequency regime, phase‐change materials (PCMs) promote the development of dynamic devices, especially when combined with a plasmonic approach delivering strong field enhancement and localization. According to the design of plasmonic metamaterials or hybrid composites, PCMs can actively modulate the electromagnetic properties of THz waves through thermal, electrical, and optical means. In turn, THz waves can affect the PCM properties in the nonlinear regime due to the intense field strength enhancement by plasmonic structures. Here, a few types of PCMs demonstrating promising potential in THz plasmonic applications are introduced. Starting from the best‐known transition metal oxide, vanadium dioxide (VO2), which possesses an insulator‐to‐metal phase transition near room temperature, superconductors, chalcogenides, ferroelectrics, liquid crystals, and liquid metals are covered along with their phase‐change properties and the control mechanisms infused with THz plasmonic applications. The corresponding recent progress presenting how PCMs combined with plasmonic structures can demonstrate effective THz modulation is reviewed. This general overview may provide a better understanding of dynamic THz plasmonics and new ideas for future THz technology.

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Ultrafast frequency-agile terahertz devices using methylammonium lead halide perovskites

Abstract: We demonstrate new capabilities for frequency-agile terahertz devices using perovskites.

Cited by 61 publications

References 32 publications

Halide‐Perovskite Resonant Nanophotonics

Halide‐Perovskite Resonant Nanophotonics

Manifestation of Kinetic Inductance in Terahertz Plasmon Resonances in Thin-Film Cd₃As₂

Dynamic Terahertz Plasmonics Enabled by Phase‐Change Materials

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Ultrafast frequency-agile terahertz devices using methylammonium lead halide perovskites

Abstract: We demonstrate new capabilities for frequency-agile terahertz devices using perovskites.

Cited by 61 publications

References 32 publications

Halide‐Perovskite Resonant Nanophotonics

Halide‐Perovskite Resonant Nanophotonics

Manifestation of Kinetic Inductance in Terahertz Plasmon Resonances in Thin-Film Cd3As2

Dynamic Terahertz Plasmonics Enabled by Phase‐Change Materials

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Manifestation of Kinetic Inductance in Terahertz Plasmon Resonances in Thin-Film Cd₃As₂