Above room-temperature dielectric and nonlinear optical switching materials based on [(CH3)3S]2[MBr4] (M = Cd, Mn and Zn)

2019 ◽  
Vol 48 (30) ◽  
pp. 11292-11297 ◽  
Author(s):  
Xiao-Gang Chen ◽  
Yao-Zu Zhang ◽  
Dong-Sheng Sun ◽  
Ji-Xing Gao ◽  
Xiu-Ni Hua ◽  
...  
Keyword(s):  
Optical Switching ◽  
Nonlinear Optical ◽  
Room Temperature ◽  
Inorganic Hybrid ◽  
Hybrid Compounds ◽  
Switching Characteristics

Three organic–inorganic hybrid compounds based on [Me3S]+ cations exhibit sensitive dielectric and nonlinear optical switching characteristics above room temperature.

[C 5 H 12 N]SnCl 3 : A Tin Halide Organic–Inorganic Hybrid as an Above‐Room‐Temperature Solid‐State Nonlinear Optical Switch

2019 ◽  
Vol 25 (10) ◽  
pp. 2610-2615 ◽  
Author(s):  
Xitao Liu ◽  
Chengmin Ji ◽  
Zhenyue Wu ◽  
Lina Li ◽  
Shiguo Han ◽  
...  
Keyword(s):  
Solid State ◽  
Nonlinear Optical ◽  
Room Temperature ◽  
Optical Switch ◽  
Inorganic Hybrid

Above-room-temperature switching of quadratic nonlinear optical properties in a Bi–halide organic–inorganic hybrid

2018 ◽  
Vol 6 (35) ◽  
pp. 9532-9536 ◽  
Author(s):  
Zhenyue Wu ◽  
Xitao Liu ◽  
Chengmin Ji ◽  
Lina Li ◽  
Sasa Wang ◽  
...  
Keyword(s):  
Optical Properties ◽  
Nonlinear Optical ◽  
Room Temperature ◽  
Nonlinear Optical Properties ◽  
Lead Free ◽  
Inorganic Hybrid ◽  
Nlo Switching

A lead-free Bi-based organic–inorganic hybrid shows attractive above-room-temperature NLO switching behaviors with a superior contrast of ∼35.

scholarly journals Preparation and Characterization of [C6H5CH2 NH3]2PbI4, [C6H5CH2CH2SC(NH2)2]3 PbI5 and [C10H7CH2NH3]PbI3 Organic-Inorganic Hybrid Compounds

1999 ◽  
Vol 54 (11) ◽  
pp. 1405-1409 ◽  
Author(s):  
G. C. Papavassiliou ◽  
G. A. Mousdis ◽  
C. P. Raptopoulou ◽  
A. Terzis
Keyword(s):  
Optical Absorption ◽  
Room Temperature ◽  
Crystal Form ◽  
Optical Absorption Spectra ◽  
Photoluminescence Spectra ◽  
Inorganic Hybrid ◽  
Hybrid Compounds ◽  
Excitonic Interactions ◽  
Low Dimensional

The preparation, crystal structures, optical absorption spectra, and photoluminescence spectra of the title compounds are reported. The compounds were prepared in single crystal form. [C6H5CH2NH3]2PbI4 consists of anionic perovskite sheets of corner-sharing Pbl6 octahedra, which alternate with the C6H5CH2NH3+ sheets. [ C6H5CH2CH2SC(NH2)2]3 PbI5 consists of zig-zag chains of anionic corner sharing PbI6 octahedra separated by C6H5CH2CH2SC(NH2)2 cations. [C10H7CH2NH3]Pbl3 consists of twin chains of edge-sharing PbI6 octahedra separated by C10H7CH2NH3 cations. The compounds are thus low-dimensional systems. The excitonic spectra were observed in all cases, even at room temperature, and the possibility of organicinorganic excitonic interactions is discussed.

Nonressonant nonlinear optical switching behavior of Ag monometallic and Ag@Au bimetallic investigated by femtosecond Z-Scan measurements

2021 ◽  
Vol 142 ◽  
pp. 107247
Author(s):  
Sara D.G. Mariano ◽  
Naythalla A.M. Saraiva ◽  
Jean C.S. Costa ◽  
Claudevan A. Sousa ◽  
Nefe J.B. Silva ◽  
...  
Keyword(s):  
Optical Switching ◽  
Nonlinear Optical ◽  
Switching Behavior

scholarly journals Nonlinear Optical Response of a WS2 Monolayer at Room Temperature upon Multicolor Laser Excitation

ACS Photonics ◽  
2021 ◽  
Vol 8 (2) ◽  
pp. 550-556
Author(s):  
Javier Hernandez-Rueda ◽  
Marc L. Noordam ◽  
Irina Komen ◽  
L. Kuipers
Keyword(s):  
Nonlinear Optical ◽  
Room Temperature ◽  
Laser Excitation ◽  
Optical Response ◽  
Nonlinear Optical Response ◽  
Ws2 Monolayer

scholarly journals Optical switching of topological phase in a perovskite polariton lattice

2021 ◽  
Vol 7 (21) ◽  
pp. eabf8049
Author(s):  
Rui Su ◽  
Sanjib Ghosh ◽  
Timothy C. H. Liew ◽  
Qihua Xiong
Keyword(s):  
Optical Switching ◽  
Room Temperature ◽  
Optical Pumping ◽  
Optical Nonlinearity ◽  
Edge States ◽  
Ambient Conditions ◽  
Strong Light ◽  
Exciton Polaritons ◽  
Matter Interaction ◽  
Light Matter Interaction

Strong light-matter interaction enriches topological photonics by dressing light with matter, which provides the possibility to realize active nonlinear topological devices with immunity to defects. Topological exciton polaritons—half-light, half-matter quasiparticles with giant optical nonlinearity—represent a unique platform for active topological photonics. Previous demonstrations of exciton polariton topological insulators demand cryogenic temperatures, and their topological properties are usually fixed. Here, we experimentally demonstrate a room temperature exciton polariton topological insulator in a perovskite zigzag lattice. Polarization serves as a degree of freedom to switch between distinct topological phases, and the topologically nontrivial polariton edge states persist in the presence of onsite energy perturbations, showing strong immunity to disorder. We further demonstrate exciton polariton condensation into the topological edge states under optical pumping. These results provide an ideal platform for realizing active topological polaritonic devices working at ambient conditions, which can find important applications in topological lasers, optical modulation, and switching.

2D organic-inorganic hybrid perovskite materials for nonlinear optics

Nanophotonics ◽  
2020 ◽  
Vol 9 (7) ◽  
pp. 1787-1810 ◽  
Author(s):  
Xiao Han ◽  
Yongshen Zheng ◽  
Siqian Chai ◽  
Songhua Chen ◽  
Jialiang Xu
Keyword(s):  
Nonlinear Optical ◽  
Second Harmonic ◽  
Low Cost ◽  
Laser Pulses ◽  
Structural Features ◽  
Photon Absorption ◽  
Saturable Absorption ◽  
Research Attention ◽  
Inorganic Hybrid ◽  
Quantum Well Structures

AbstractTwo-dimensional (2D) organic-inorganic hybrid perovskites feature characteristics of inherent quantum-well structures and intriguing optoelectronic properties, and have therefore attracted enormous research attention for their optical applications in light emitting, sensing, modulation, and telecommunication devices. The low-cost and solution-processed fabrications as well as alternative organic spacer cations endue 2D hybrid perovskites with higher tunability in optical and photonic applications. In particular, they demonstrate distinguished nonlinear optical characters such as second-harmonic generation (SHG), two-photon absorption (2PA), and saturable absorption (SA) under the excitation of laser pulses. Here, we discuss the construction of the various sorts of 2D hybrid perovskites with different structural features. We have also highlighted some representative properties and applications of these 2D hybrid perovskites in both linear and nonlinear optical regimes.

scholarly journals Low-energy room-temperature optical switching in mixed-dimensionality nanoscale perovskite heterojunctions

2021 ◽  
Vol 7 (18) ◽  
pp. eabf1959
Author(s):  
Ji Hao ◽  
Young-Hoon Kim ◽  
Severin N. Habisreutinger ◽  
Steven P. Harvey ◽  
Elisa M. Miller ◽  
...  
Keyword(s):  
Optical Switching ◽  
Room Temperature ◽  
Optical Memory ◽  
Low Energy ◽  
Optical Measurements ◽  
Ion Migration ◽  
Metal Halide Perovskite ◽  
Conductance Changes ◽  
Optical Domain ◽  
Walled Carbon Nanotubes

Long-lived photon-stimulated conductance changes in solid-state materials can enable optical memory and brain-inspired neuromorphic information processing. It remains challenging to realize optical switching with low-energy consumption, and new mechanisms and design principles giving rise to persistent photoconductivity (PPC) can help overcome an important technological hurdle. Here, we demonstrate versatile heterojunctions between metal-halide perovskite nanocrystals and semiconducting single-walled carbon nanotubes that enable room-temperature, long-lived (thousands of seconds), writable, and erasable PPC. Optical switching and basic neuromorphic functions can be stimulated at low operating voltages with femto- to pico-joule energies per spiking event, and detailed analysis demonstrates that PPC in this nanoscale interface arises from field-assisted control of ion migration within the nanocrystal array. Contactless optical measurements also suggest these systems as potential candidates for photonic synapses that are stimulated and read in the optical domain. The tunability of PPC shown here holds promise for neuromorphic computing and other technologies that use optical memory.

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