Enhancing photovoltaic efficiency in Half-Tandem MAPbI3/ MASnI3 Perovskite solar cells with triple core-shell plasmonic nanoparticles

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: Jan. 9, 2025

Significant progress has been made through the optimization of modelling and device architecture solar cells proven to be a valuable highly effective approach for gaining deeper understanding underlying physical processes in cells. Consequently, this research conducted two-dimensional (2D) perovskite (PSCs) simulation develop an accurate model. The utilized study is based on finite element method (FEM). Initially, new configuration was introduced by incorporating CH3NH3SnI3 layer as absorber within PSC structure, forming parallel architecture. As result, power conversion efficiency (PCE) increased up 26.89%. light trapping process plays essential role enhancing performance PSCs. For purpose, we arrays metal nanostructures active (AL) which resulted significantly absorption these layers. In research, influence nanoparticles position AL, radius their composition (gold (Au) silver (Ag)) PSCs are examined determining cross-sectional area scattering Au Ag nanoparticles. optimal plasmonic determined inside MASnI3 complementary 60 nm champion composition. result modifications, PCE reached 29.52%, representing approximate 64% improvement compared planar structure. Subsequently, dielectric-metal-dielectric were into layer, replacing previously embedded metallic nanoparticles, order enhance chemical thermal stability. According optical-electrical results, short-circuit current density (Jsc) proposed PSC, featuring triple core-shell composed TiO2@Ag@TiO2 SiO2@Ag@SiO2, improved approximately 40% 41.5%, respectively, lacking Moreover, under conditions open-circuit voltage (Voc), Jsc, fill factor (FF), simulated at 1.01 V, 35.17 mA/cm², 84.16, 30.18%, respectively. This paves way advancements development cells, offering significant potential practical applications enhanced efficiency.

Language: Английский

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Electromagnetic Multipole Theory for Two-Dimensional Photonics

ACS Photonics, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 19, 2025

We develop a full-wave electromagnetic (EM) theory for calculating the multipole decomposition in two-dimensional (2-D) structures consisting of isolated, arbitrarily shaped, inhomogeneous, anisotropic cylinders or collection such. To derive decomposition, we first solve scattering problem by expanding scattered electric field divergenceless cylindrical vector wave functions (CVWFs) with unknown expansion coefficients that characterize response. These are then expressed via contour integrals vectorial components evaluated an volume integral equation (EFVIE). The kernels EFVIE products tensorial 2-D Green's function (GF) and equivalent volumetric magnetic current densities. validate using commercial finite element solver COMSOL Multiphysics. In validation, compute fields from various compare results alternative formulations. Finally, demonstrate applicability to study emerging photonics application on oligomer-based highly directional switching active media. This analysis addresses critical gap literature, where theories exist primarily three-dimensional (3-D) particles isotropic materials. Our work enhances understanding utilization optical properties 2-D, structures, contributing advancements photonic meta-optics technologies.

Language: Английский

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Angle‐Tolerant Circular Eigenpolarizations Enabled by Orientational Disorder in Dielectric Metasurfaces

Advanced Optical Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 28, 2025

Abstract Tailored structural disorder in photonic metasurfaces enables advanced light shaping. Specifically, an orientational chiral nanostructures leads to circular eigenpolarizations with a heavily suppressed linear birefringence. The is, therefore, vital observing purely chiroptical effects such as dichroism and optical activity. Here, it is experimentally numerically demonstrated that all‐dielectric orientationally disordered bilayer square array preserve highly for wide range of incidence angles. angle‐dependent performance compared their C 2 4 symmetric periodic counterparts, demonstrating the structures provide nearly pure across larger angles wavelengths, whereas ones do not. These findings underscore ability tailored enhance robustness engineered responses highlight its potential flat, integrable, efficient components, polarizers beam splitters.

Language: Английский

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Tunable Resonant Invisibility of All-Dielectric Metasurfaces on a Stretchable Substrate: Implications for Highly Sensitive Opto-Mechanical Modulators

ACS Applied Nano Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 28, 2025

Language: Английский

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Corner cutting connects chiral colorimetry to net electric flux in lossless all-dielectric metasurfaces

Optics Express, Journal Year: 2025, Volume and Issue: 33(5), P. 11731 - 11731

Published: Feb. 20, 2025

All-dielectric metasurfaces can produce structural colors, but the most advantageous design criteria are still being investigated. This work numerically studies how two-dimensional shape of nanoparticles affects colorimetric response under circularly polarized light (CPL) to develop a sensor distinguishing CPL orientations. Using lossless dielectric materials (silicon nitride on silicon dioxide), we achieve far-field dichroism by modifying oblong into L-shaped structures through corner cuts. suppresses one resonator mode illumination, leading differential responses. We link these responses decoupling effect in near-field net electric flux. Our findings provide guidelines for all-dielectric, sensors chiral light.

Language: Английский

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High-Q Resonance Engineering in Momentum Space for Highly Coherent and Rainbow-Free Thermal Emission

Nano Letters, Journal Year: 2025, Volume and Issue: 25(9), P. 3613 - 3619

Published: Feb. 21, 2025

Thermal emission from blackbody is typically incoherent and broadband. Achieving highly coherent thermal source while eliminating the rainbow effect has been remaining a challenging task. In our study, we utilize isolated nature of bound states in continuum (BICs) at Γ point to achieve with high temporal spatial coherence. Under framework coupled mode theory (TCMT), can significantly reduce Q-factors modes outside by employing far-field coupling different polarization channels within momentum space, thereby suppressing effect. Our design, experimentally validated through ternary grating structures, demonstrates centered 6.5 μm 23 nm bandwidth, confined 2° angular range. This advancement holds significant implications for miniaturization integration radiation devices, potential applications infrared imaging, sensing, energy harvesting.

Language: Английский

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Enhancing Magnetic Dipole Emission from 2D Hybrid Organic–Inorganic Perovskites via Mie Resonator Dimers

ACS Applied Optical Materials, Journal Year: 2025, Volume and Issue: 3(3), P. 737 - 742

Published: March 14, 2025

Recently, layered 2D hybrid organic-inorganic perovskites (HOIPs) like butylammonium lead iodide (BA2PbI4) have been shown to exhibit ultrabright out-of-plane-oriented magnetic dipole (MDOP) photoluminescence (PL) arising from self-trapped excitons (STEs). The MDOP emission, however, has considerable spectral overlap with the dominant in-plane-oriented electric (EDIP) transitions, making it difficult interrogate STE properties. Here, we theoretically investigate opportunities use Mie resonator dimers selectively enhance emission through Purcell effect. We calculate relative MD and ED enhancements at dimer center as well average values across geometry. show that selective enhancement is excellent enabling nearly pure (96%) peak (540 nm) predominant (up 77%) entire integrated spectrum (500-600 nm). subsequently show, away center, of relatively weak out-of-plane EDOP transitions competes enhancements, reducing branching ratio (73% peak, 39% spectrally integrated). Lastly, how modifies PL spectra emitter radiation pattern. Notably, for volume-averaged dipoles, both emissions are mediated via dimer, producing a single donut-beam-like pattern spectrum. Our results clarify potential achieving "pure" HOIPs simple highlight importance designing nanophotonic structures can maintain desired high-symmetry points.

Language: Английский

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Metasurfaces with Multipolar Resonances and Enhanced Light–Matter Interaction

Nanomaterials, Journal Year: 2025, Volume and Issue: 15(7), P. 477 - 477

Published: March 21, 2025

Metasurfaces, composed of engineered nanoantennas, enable unprecedented control over electromagnetic waves by leveraging multipolar resonances to tailor light–matter interactions. This review explores key physical mechanisms that govern their optical properties, including the role in shaping metasurface responses, emergence bound states continuum (BICs) support high-quality factor modes, and Purcell effect, which enhances spontaneous emission rates at nanoscale. These effects collectively underpin design advanced photonic devices with tailored spectral, angular, polarization-dependent properties. discusses recent advances metasurfaces applications based on them, highlighting research employs full-wave numerical simulations, analytical semi-analytic techniques, decomposition, nanofabrication, experimental characterization explore interplay resonances, quasi-bound states, enhanced A particular focus is given metasurface-enhanced photodetectors, where structured nanoantennas improve light absorption, spectral selectivity, quantum efficiency. By integrating conventional photodetector architectures, it possible enhance responsivity, engineer photocarrier generation rates, even functionalities such as polarization-sensitive detection. The between BICs, provides a unified framework for designing next-generation optoelectronic devices. consolidates progress these areas, emphasizing potential metasurface-based approaches high-performance sensing, imaging, energy-harvesting applications.

Language: Английский

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Antibiotic‐Mediated Plasmonic‐Mie Resonance for Biosensing Applications on a Novel Silicon Nanopillar Metasurface

Advanced Materials Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: March 31, 2025

Abstract This study demonstrates a biosensing platform facilitated by localized surface plasmonic resonance (LSPR) on silicon (Si) nanopillar metasurface mediated the presence of cephalexin (Cef) antibiotics in solution. The is designed to exhibit narrow quadrupolar Mie resonances that when coupled with bovine serum albumin‐coated (BSA‐coated) gold nanospheres (BSANS) will produce an appreciable redshift at peak wavelength, occurring only target antibiotic. To optimize performance Si nanopillars, finite element method utilized fine‐tune their diameters, heights, and periodicity, along improvements fabrication techniques, under BSANS‐antibiotic binding assay. sensor directly fabricated via facile photolithographic process using wafers. Through detection assay, this device exhibited significant 22 nm wavelength shift resulting from changes local refractive index coupling. phenomenon through down 0.3 µg mL −1 for between nanoparticles allowing sensitive real‐time detection.

Language: Английский

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Zno Nanoparticles: Strain-Engineered Photocatalytic Performance and Optical Properties Validated by Mie Theory

Published: Jan. 1, 2025

Language: Английский

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