A5071203495- Photonic Crystals and Applications
- Photonic and Optical Devices
- Optical Coatings and Gratings
- Thin-Film Transistor Technologies
- Silicon Nanostructures and Photoluminescence
- Semiconductor Lasers and Optical Devices
- Nanowire Synthesis and Applications
- Silicon and Solar Cell Technologies
- solar cell performance optimization
- Perovskite Materials and Applications
- Optical Network Technologies
- Strong Light-Matter Interactions
- Thermal Radiation and Cooling Technologies
- Advanced Fiber Optic Sensors
- Chalcogenide Semiconductor Thin Films
- Semiconductor materials and interfaces
- Advanced Photonic Communication Systems
- Plasmonic and Surface Plasmon Research
- Nonlinear Photonic Systems
- Quantum Dots Synthesis And Properties
- Microwave Engineering and Waveguides
- Conducting polymers and applications
- Solar Thermal and Photovoltaic Systems
- Neural Networks and Reservoir Computing
- Luminescence Properties of Advanced Materials
Institut de Recherche Dupuy de Lôme
2021-2024
Institut des Nanotechnologies de Lyon
2013-2024
Université Claude Bernard Lyon 1
2013-2024
Centre National de la Recherche Scientifique
2013-2024
École Centrale de Lyon
2013-2024
École d'Ingénieurs en Chimie et Sciences du Numérique
2021-2024
Institut National des Sciences Appliquées de Lyon
2014-2024
Canadian Nautical Research Society
2014
Nanophoton (Brazil)
2014
Multitel
2009
We propose a design that increases significantly the absorption of thin layer absorbing material such as amorphous silicon. This is achieved by patterning one-dimensional photonic crystal (1DPC) in this layer. Indeed, coupling incident light into slow Bloch modes 1DPC, we can control photon lifetime and then, enhance integrated over whole solar spectrum. Optimal parameters 1DPC maximize wavelength range interest, up to 45% both S P polarization states instead 33% for unpatterned, 100 nm...
Ultrathin c-Si solar cells have the potential to drastically reduce costs by saving raw material while maintaining good efficiencies thanks excellent quality of monocrystalline silicon. However, efficient light trapping strategies must be implemented achieve high short-circuit currents. We report on fabrication both planar and patterned ultrathin glass using low temperature (T < 275 °C), low-cost, scalable techniques. Epitaxial layers are grown PECVD at 160 °C transferred a substrate anodic...
Exciton-polaritons, elementary excitations arising from the strong coupling regime between photons and excitons in insulators or semiconductors, represent a promising platform for studying quantum fluids of light realizing prospective all-optical devices. Among different materials room temperature polaritonic devices, two-dimensional (2D) layered perovskites have recently emerged as one candidates thanks to their prominent excitonic features at temperature. Here we report on experimental...
We investigate the physics of photonic band structures moir\'e patterns that emerged when overlapping two uni-dimensional (1D) crystal slabs with mismatched periods. The structure our system is a result interplay between intra-layer and inter-layer coupling mechanisms, which can be fine-tuned via distance separating layers. derive an effective Hamiltonian captures essential reproduces all numerical simulations electromagnetic solutions high accuracy. Most interestingly, \textit{magic...
Exciton-polaritons are mixed light-matter excitations that result from the strong coupling regime between an active excitonic material and photonic resonances. Harnessing these hybrid provides a rich playground to explore fascinating fundamental features, such as out-of-equilibrium Bose-Einstein condensation quantum fluids of light, well novel mechanisms be exploited in optoelectronic devices. Here, we investigate experimentally formation exciton-polaritons arising mixing inorganic-organic...
In this paper, we present the integration of combined front and back 1D 2D diffraction gratings with different periods, within thin film photovoltaic solar cells based on crystalline silicon layers. The grating structures have been designed considering both need for incident light absorption enhancement technological feasibility. Long wavelength is increased thanks to long period (750 nm) grating, while reflection reduced by using a short (250 grating. simulated circuit current in cell...
We present theoretically the formation of exciton–photon polaritons and exciton-surface plasmon in a perovskite-based subwavelength lattice on metallic plane. It is shown that later will be achieved as perovskite layer ultra-thin ( <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" id="m1"> <mml:mrow> <mml:mo form="prefix"><</mml:mo> <mml:mn>50</mml:mn> <mml:mtext> </mml:mtext> <mml:mi>nm</mml:mi> </mml:mrow> </mml:math> ), while co-existence both dominate,...
Abstract Light management is essential for metal‐halide perovskite solar cells to achieve record performance. In this review, criteria on materials, processes, and photonic engineering are established enhance primarily the short circuit current density high energy yields. These used analyze a large panel of solutions envisaged in literature single junction cells. addition, perspective acquired from rigorous electromagnetic simulations performed various comparable structures introduced...
We report on the absorption of a 100nm thick hydrogenated amorphous silicon layer patterned as planar photonic crystal (PPC), using laser holography and reactive ion etching. Compared to an unpatterned layer, electromagnetic simulation optical measurements both show 50% increase over 0.38-0.75micron spectral range, in case one-dimensional PPC. Such absorbing crystals, combined with transparent conductive layers, may be at basis new photovoltaic solar cells.
We propose a photovoltaic solar cell design based on 100 nm thick absorbing layer made of hydrogenated amorphous silicon and patterned as two-dimensional planar photonic crystal (PPC). After scanning the parameters PPC within cell, optical simulations performed best configuration obtained reveal that relative increase in integrated absorption inside active 28% can be expected between 300 720 compared to an equivalent but nonpatterned under normal incidence. Besides, this is found robust...
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Friedrich-Wintgen (FW) interference is an atypical coupling mechanism that grants loss exchange between leaky resonances in non-Hermitian classical and quantum systems. Intriguingly, such a makes destructive possible for scenarios which radiating wave becomes bound state the continuum (BIC) by giving away all of its losses. Here we propose demonstrate experimentally original concept to tailor FW-BICs with polarization singularity at on-demand wavevectors optical metasurface. As...
In this paper, we present the design, analysis, and experimental results on integration of 2D photonic crystals in thin film photovoltaic solar cells based hydrogenated amorphous silicon. We introduce an analytical approach time domain coupled mode theory to investigate impact photon lifetime anisotropy optical resonances absorption efficiency. Specific design rules are derived from analysis. also show that, due specific properties crystal resonances, angular acceptance such is particularly...
A 2-D photonic crystal was integrated experimentally into a thin-film crystalline-silicon solar cell of 1-μm thickness, after numerical optimization maximizing light absorption in the active material. The boosted short-circuit current cell, but it also damaged its open-circuit voltage and fill factor, which led to an overall decrease performances. Comparisons between modeled actual optical behaviors ideal morphologies, show global robustness nanostructure experimental deviations, particular...
In this paper we discuss on light management in silicon thin film solar cells, using photonic crystal (PhC) structures. We particularly focus photovoltaic devices including amorphous absorbers patterned as 2D PhCs. Physical principles and design rules leading to the optimized configuration of cell are discussed by means optical simulations performed realistic stacks. Theoretically, a maximum increase 40%rel integrated absorption a-Si:H layer is expected compared unpatterned case. Moreover,...
Exciton-polaritons represent a promising platform that combines the strengths of both photonic and electronic systems for future optoelectronic devices. However, their application is currently limited to laboratory research due high cost complexity fabrication methods, which are not compatible with mature CMOS technology developed microelectronics. In this work, we develop an innovative, low-cost, CMOS-compatible method fabricating large surface polaritonic This achieved by direct patterning...
2D photonic crystal (2DPC) structures consisting in silicon nanopillar arrays silica are investigated. The main motivation of this work lies that rod should be easily combined with refractive (e. g. micro-wire waveguides), unlike 2DPC hole lattices. Such an association is expected to lead both new functionalities and larger scale integration. In paper, we study the loss mechanism for non degenerated Bloch modes located at Gamma-point a slab constituted by square lattice rods silica. For such...
This paper presents a heterogeneous model of an optical network-on chip (ONoC). An ONoC is interconnect architecture integrated on system-on-chip, and intended to replace traditional electrical networks-on-chip (NoC) overcome their future bandwidth limitations. To evaluate the advantages technological implementation ONoC, it necessary its behavior realize virtual prototype estimate power, latency, area, bandwidth, subsequently compare these parameters with performance classical NoC. at high...
<para xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> In this paper, we present the design, fabrication, and characterization of a highly integrated optical 4<formula formulatype="inline"><tex Notation="TeX">$\,\times\,$</tex> </formula>4 crossbar based on microring resonator add-drop filters. The designed structure, as small <formula Notation="TeX">$50\,\mu{\hbox {m}}\times50\,\mu{\hbox {m}}$</tex></formula>, has been fabricated in CMOS compatible...
The positive effects of various perturbations introduced in a bidimensional photonic-crystal patterned membrane on its integrated absorption are investigated numerically and theoretically. Two phenomena responsible for the enhanced observed identified: an increase spectral density modes, obtained thanks to folding mechanisms reciprocal lattice, better coupling modes with incident light. By introducing proper pseudodisordered pattern, we show that those two can be exploited so as overcome...
Phosphors based on rare earth ions are used to convert photons useful wavelengths for a wide range of applications, but the improvement their emission efficiency remains key challenge in thin films. In this paper, we demonstrate theoretically and experimentally that photonic crystal (PC) structure can efficiently enhance luminescence properties down-shifting layer (DSL). Our new metastructure combines DSL (Y2O3:Eu3+) two-dimensional (2D) planar PC (SiNx), latter being specifically engineered...
The role of pseudo-disordered photonic crystals on the absorption efficiency simplified thin film crystalline silicon solar cells is presented and discussed. expected short circuit current can thus be further increased compared to a fully optimized square lattice holes, thanks carefully controlled positions nanoholes in considered realistic cell stack. In addition, structures are less sensitive angle incidence, especially long wavelength range.