Metal colloids are of great interest in the field nanophotonics, mainly due to their morphology-dependent optical properties, but also because they high-quality building blocks for complex plasmonic architectures. Close-packed colloidal supercrystals not only serve investigating rich resonances arising strongly coupled arrangements enable tailoring response, on both nano- and macroscale. Bridging these vastly different length scales at reasonable fabrication costs has remained fundamentally...

The versatile hybrid perovskite nanocrystals (NCs) are one of the most promising materials for optoelectronics by virtue their tunable bandgaps and high photoluminescence (PL) quantum yields. However, inherent crystalline chemical structure limits chiroptical properties achievable with material. production chiral perovskites has become an active field research its applications in optics, chemistry, or biology. Typically, halide obtained incorporation different moieties Unfortunately, these...

A simple, reproducible, and reliable method to crystallize sub-micrometer-size spherical colloids using a mixture of volatile solvents as dispersion media is presented. Strongly diffracting direct opal structures high uniformity are attainable over large areas within minutes without further processing. Thickness orientation control also possible through this technique. In the figure, both [111] (left) [100] (right) oriented lattices deposited on glass slides shown.

The solar-to-electric power-conversion efficiency (η) of dye-sensitized solar cells can be greatly enhanced by integrating a mesoporous, nanoparticle-based, 1D photonic crystal as coherent scattering layer in the device. photogenerated current is improved without altering open-circuit voltage cell, while keeping transparency cell intact. Improved average η values between 15% and 30% are attained. Detailed facts importance to specialist readers published ”Supporting Information”. Such...

The effect of the presence a photonic crystal on optical absorption dye-sensitized titanium oxide solar cells is theoretically investigated herein. Different configurations in which colloidal can be implemented such devices are modeled, and their absorptances compared. Experimental results light-harvesting enhancement recently reported for periodically structured photoelectrodes satisfactorily explained terms appearance multiple resonant modes localized absorbing layer when this deposited...

Film star: Preformed self-assembled 3D photonic crystals (see picture) can be infilled with a polycarbonate matrix for mechanical stability and transferred onto rough porous optoelectronic photovoltaic devices. This technique allows the incorporation of independently processed devices, in which films have high optical quality. Detailed facts importance to specialist readers are published as "Supporting Information". Such documents peer-reviewed, but not copy-edited or typeset. They made...

Plasmonic excitation in metals has received great attention for light localization and control of light-matter interactions at the nanoscale with a plethora applications absorption enhancement, surface-enhanced Raman scattering, or biosensing. Electrically active plasmonic devices, which had remained underexplored, have recently become growing field interest. In this report we introduce metal-insulator-semiconductor heterostructure plasmo-electric energy conversion, novel architecture to...

Plasmonic supercrystals and periodically structured arrays comprise a class of materials with unique optical properties that result from the interplay plasmon resonances, as well near- far-field coupling. Controlled synthesis such hierarchical structures remains fundamental challenge, it demands strict control over assembly morphology, array size, lateral spacing, macroscale homogeneity. Current fabrication approaches involve complicated multistep procedures lacking scalability...

Abstract The composition and intercellular interactions of tumor cells in the tissues dictate biochemical metabolic properties microenvironment. rewiring has a profound impact on microenvironment, to an extent that monitoring such perturbations could harbor diagnostic therapeutic relevance. A growing interest these phenomena inspired development novel technologies with sufficient sensitivity resolution monitor alterations In this context, surface‐enhanced Raman scattering (SERS) can be used...

Perovskite nanocrystals (NCs) have revolutionized optoelectronic devices because of their versatile optical properties. However, controlling and extending these functionalities often requires a light-management strategy involving additional processing steps. Herein, we introduce simple approach to shape perovskite (NC) into photonic architectures that provide light management by directly shaping the active material. Pre-patterned polydimethylsiloxane (PDMS) templates are used for...

ConspectusOver the past 30 years, engineering of plasmonic resonances at nanoscale has progressed dramatically, with important contributions in a variety different fields, including chemistry, physics, biology, engineering, and medicine. However, heavy optical losses related to use noble metals for fabrication structures hindered their application various settings. Recently, an answer these long-lasting issues emerged lattice plasmon (LPRs, also called surface resonances), bringing new...

Abstract The creation of chiral plasmonic architectures combining templates with achiral particles leads to strong chiroptical responses that can be finely tuned via the characteristics colloidal building blocks. Here we show how elastomeric molds, pre-patterned a hexagonal array triskelia motifs, guide assembly ordinary noble metal colloids into dichroism values. Under normal incidence, arrays made gold and silver showed g -factors 0.18 0.4, respectively. In all cases, increasing size...

Herein we present an experimental study of the spectral dependence photogenerated current opal-based solar cells. We analyze incident photon-to-current conversion efficiency (IPCE) for dye-sensitized cells in which colloidal crystals are introduced different configurations. prove that a nanocrystalline titanium oxide electrode moulded shape inverse opal shows decrease region photonic stop band opens up. Contrarily, when standard thin film disordered titania nanocrystallites is coupled to...

A straightforward synthetic route to produce colloidal photonic crystals containing dielectric planar defects of controlled thickness (see Figure) is presented. Allowed states that arise within the stop band as a result this doping greatly modify reflectance properties crystals, in good agreement with theoretical predictions.

We present spatial light interference tomography (SLIT), a labelfree method for 3D imaging of transparent structures such as live cells.SLIT uses the principle interferometric with broadband fields and combines optical gating due to micron-scale coherence length that high numerical aperture objective lens.Measuring phase shift map associated object it is translated through focus provides full information about distribution refractive index.Using reconstruction algorithm based on Born...

In view of their exciting optoelectronic light–matter interaction properties, plasmonic–hot-electron devices have attracted significant attention during the last few years as a novel route for photodetection and light-energy harvesting. Herein we report use quasi-3D large-area plasmonic crystals (PC) hot-electron photodetection, with tunable response across visible near-infrared. The strong interplay between different PC modes gives access to intense electric fields hot-carrier generation...

Colloidal quantum dots (CQDs) can be used to extend the response of solar cells, enabling utilization power that lies red bandgap c-Si and perovskites. To achieve largely complete absorption infrared (IR) photons in CQD solids requires thicknesses on micrometer range; however, this exceeds typical diffusion lengths (≈300 nm) photoexcited charges these materials. Nanostructured metal back electrodes grant cell efficient IR light trapping thin active layers with no deterioration electrical...

Abstract Noble metal decoration of wideband gap semiconductors enables the excitation surface plasmons in visible range that upon relaxation generate hot carriers used for catalysis. However, this strategy leads to photocatalytic conversion efficiencies are still low. Here, a light‐trapping scheme is amplify light‐harvesting efficiency TiO 2 semiconductor beyond UV region by coupling 2D‐photonic crystal Au decorated titania. This approach easily scalable using soft nanoimprinting lithography...

Precise arrangements of plasmonic nanoparticles on substrates are important for designing optoelectronics, sensors and metamaterials with rational electronic, optical magnetic properties. Bottom-up synthesis offers unmatched control over morphology response individual building blocks. Usually, the incorporation made by bottom-up wet chemistry starts from batch colloids, which requires time-consuming hard-to-scale steps like ligand exchange self-assembly. Herein, an unconventional...

Herein we report a theoretical analysis of the efficiency dye sensitized solar cells in which colloidal crystals are introduced different configurations. We find that piling up lattice constant leads to light harvesting enhancement whole absorption range. provide optimum structural features such photonic crystal multilayer needed achieve photocurrent around 60% with respect standard cells. demonstrate this improvement is result optical amplification effect slow photon resonant modes...

Rough 2D plasmonic crystals pose as inexpensive and easily processed SERS substrates exhibiting enhancement factors up to 1.6 × 10¹⁰.