A5031445030- Plasmonic and Surface Plasmon Research
- Thin-Film Transistor Technologies
- Perovskite Materials and Applications
- Metamaterials and Metasurfaces Applications
- Photonic Crystals and Applications
- Conducting polymers and applications
- Organic Electronics and Photovoltaics
- Optical Coatings and Gratings
- Photonic and Optical Devices
- Nanowire Synthesis and Applications
- Advanced Antenna and Metasurface Technologies
- Quantum Dots Synthesis And Properties
- Silicon Nanostructures and Photoluminescence
- Near-Field Optical Microscopy
- Advanced Photonic Communication Systems
- Organic Light-Emitting Diodes Research
- Silicon and Solar Cell Technologies
- Gold and Silver Nanoparticles Synthesis and Applications
- Ionic liquids properties and applications
- Semiconductor Lasers and Optical Devices
- Orbital Angular Momentum in Optics
- Chalcogenide Semiconductor Thin Films
- Microwave Engineering and Waveguides
- Optical Wireless Communication Technologies
- Luminescence and Fluorescent Materials
ITMO University
2015-2024
Saint Petersburg State Electrotechnical University
2024
The University of Texas at Dallas
2020
University of Rome Tor Vergata
2020
Aalto University
2015-2018
Moscow Power Engineering Institute
2014
St Petersburg University
2011-2012
We analyze dispersion properties of metal-dielectric nanostructured metamaterials. demonstrate that, in a sharp contrast to the results for corresponding effective medium, structure demonstrates strong optical nonlocality due excitation surface plasmon polaritons that can be engineered by changing ratio between thicknesses metal and dielectric layers. In particular, this allows existence an additional extraordinary wave manifests itself splitting TM-polarized beam scattered at...
Meta-optics based on optically resonant all-dielectric structures is a rapidly developing research area driven by its potential applications for low-loss efficient metadevices. Active, light-emitting subwavelengh nanostructures and metasurfaces are of particular interest meta-optics, as they offer unique opportunities novel types compact light sources nanolasers. Recently, the study “halide perovskites” has attracted enormous attention due to their exceptional optical electrical properties....
We propose the enhancement of photovoltaic absorption in thin-film solar cells using densely packed arrays (not obviously regular) non-absorbing submicron or micron-sized dielectric spheres located on top cell. The can decrease reflection forming an effective blooming layer. Simultaneously, they suppress transmission through layer transforming incident radiation into a set collimated beams. focusing light inside allows enhanced it leading to increase current. Every sphere focuses wave...
In this paper, we study the efficiency of several types all-dielectric, non-resonant, antireflection, and light-trapping coatings for enhancement photovoltaic absorption in thin-film silicon solar cells. We compare offered by a square array nano-pillar shaped voids dielectric covering cell with that granted flat blooming layer, densely packed nanospheres. optimize these show newly proposed nanostructure allows significant increase absorption. The dependence antireflection properties on angle...
Solar photovoltaics based on synthetic halide perovskites have revolutionized solar energetics in the last decade. Since 2009 overall efficiency of sunlight‐to‐electricity conversion perovskite cells increases from 3.8% up to 25.5% (for thin‐film single‐junction cells) and more than 30% affordable tandem with top photovoltaic layer perovskite). On other hand, nanophotonics has made a huge progress direction light manipulation at nanoscale, which is highly important for various technologies....
We suggest a novel concept of efficient light-trapping structures for thin-film solar cells based on arrays planar nanoantennas operating far from plasmonic resonances.The operation principle our relies the excitation chessboard-like collective modes nanoantenna with field localized between neighboring metal elements.We demonstrated theoretically substantial enhancement solar-cell short-circuit current by designed structure in whole spectrum range compared to conventional employing...
Resonant dielectric structures have emerged recently as a new platform for subwavelength nonplasmonic photonics. It was suggested and demonstrated that magnetic electric Mie resonances can enhance substantially many effects at the nanoscale including spontaneous Raman scattering. Here, we demonstrate stimulated scattering (SRS) isolated crystalline silicon (c-Si) nanoparticles observe experimentally transition from to manifested in nonlinear growth of signal intensity above certain pump...
We propose an original approach for creating tunable electromagnetic metamaterials. demonstrate experimentally that magnetic resonance of a split-ring resonator (“meta-atom” composite material) with photodiode operated in photovoltaic mode can be tuned by changing the intensity external light source. Moreover, two coupled resonators, we show achieve light-induced switching between dark- and bright-mode responses.
Antireflection and light-trapping coatings are important parts of photovoltaic architectures, which enable the reduction parasitic optical losses, therefore increase power conversion efficiency (PCE). Here, we propose a novel approach to enhance perovskite solar cells using electrode (LTE) with non-reciprocal transmission, consisting perforated metal film covered densely packed array nanospheres. Our LTE combines charge collection light trapping, it can replace classical transparent...
We perform complex investigation of the distribution electromagnetic fields in vicinity an array silver nanoantennas, which can operate as efficient light trapping structure visible spectral range. In theory, this should support unusual collective modes that possess advantageous local electric fields, ensuring both strong field localization beneath nanoantennas and a low level optical losses inside metal. Using aperture-type near-field scanning microscope (NSOM), we obtain patterns show...
In this paper, we study experimentally the enhancement of parameters a typical organic thin film solar cell (OSC) achieved by an originally proposed light trapping structure (LTS). Our LTS is array silver nanoantennas supporting collective modes, what provide subwavelength in substrate. Low losses metal result from advantageous optical field distribution that broad range wavelengths. We all main photovoltaic (PV) observed OSC with our LTS, such as power conversion efficiency (PCE), which...
Resonant semiconductor nanoparticles (NPs) that improve both light trapping and scattering have recently emerged as an additional tool for enhancing the efficiency of perovskite solar cells. Among various types nanostructures, silicon NPs, which support Mie modes lower losses compared with metallic particles plasmon resonances, exhibit best improvement standard methylammonium lead iodide (MAPbI 3 )‐based Herein, not only optical problem cell optimization nanoantennas is studied, but also...
Generalizing a previously developed analytical model of metal-enhanced fluorescence to the case strong coupling between quantum emitter and plasmonic nanoantenna, we study quenching in regime. When nanoantenna is simple Ag sphere approaches its surface turns suppressed (both dipole quadrupole moments system vanish) whole spectral range. However, if dimer with tiny gap two nanoparticles, grows due increase moment, never occurs. This unexpected result explains why nanolaser regime can be...
We demonstrate that the power conversion efficiency (PCE), photocurrent, and fill factor (FF) of perovskite solar cells (PSC) can be significantly improved by photoinduced self-gating in ionic liquids (ILs) via n-doping carbon nanotube (CNT) top electrode on fullerene electron transport layer (ETL). CNTs, graphene, other electrodes have been proven to stable for PSC, but was not high. previously shown performance PSCs with CNT IL gating gate voltage (Vg) applied from an external source. Here...
The integration of nanoparticles (NPs) into functional materials is a powerful tool for the smart engineering their physical properties. If properly designed and optimized, NPs possess unique optical, electrical, quantum, other effects that will improve efficiency optoelectronic devices. Here, we propose novel approach enhancement perovskite light-emitting diodes (PeLEDs) based on electronic band structure deformation by core-shell forming metal-oxide-semiconductor (MOS) with an Au core SiO2...
Metallic cathodes are one of reasons for instability in perovskite solar cells due to reaction with halogens I − , Br and it is desirable have stable carbon‐based cathodes, particularly carbon nanotubes (CNTs), transport layers such as C 60 /C 70 . In this work, we show that gating top CNT cathode ionic liquid by changing gate voltage ( V g ) tunes the Fermi level electrical double layer charging causes lowering barrier at electron (ETL). Moreover, higher ions further propagate into...
Ultrafast deposition of laser energy to a thin substrate-supported Au film enables formation unique 3D surface morphologies, hollow nanobumps, possessing prospective linear optical properties useful for advanced plasmonic biosensors and nanoscale light sources. Here, we study the nonlinear response such nanostructures by measuring second harmonic generation (SHG) from individual nanobumps their ordered arrays supporting local- lattice-type plasmons at near-infrared frequencies. The results...
We propose a light-trapping structure offering significant enhancement of photovoltaic absorption in transparent organic solar cells operating at infrared while the visible light transmission keeps sufficiently high. The main mechanism trapping is related with excitation collective oscillations metal nanoantenna arrays, characterized by advantageous field distribution volume cell. It allows more than triple increase absorption.
We analyzed capabilities and functionalities of a multisegment superlens recently suggested for long-distance transport color images with subwavelength resolution. studied the performance three- six-segment nanolens structures by analyzing numerically both transmission reflection coefficients employing full-wave simulations particular source arrangement. Our results suggest that such offer limited imaging relatively narrow frequency band.
Usually, light-trapping structures (LTSs) for thin-film solar cells (TFSCs) are designed having in mind an explicit photovoltaic (PV) design. This approach implies that every new TFSC which losses the substrate of PV layer or transparent electrode rather high needs development its own LTS should be specially prepared as integral part TFSC. In this work, we suggest a universal increase optical efficiency all TFSCs third generation. We theoretically demonstrate improvement absorption organic...