Cost-effective and lightweight solar cells are currently demanded in strategic fields such as space applications or integrated-wearable devices. A reduction of the active layer thickness
Here, we report a dielectric-screening effect enabled by controlling the space charge within formamidinium-cesium lead halide perovskites, and for the first time, we provide a coherent picture...
Stability and scalability are essential and urgent requirements for the commercialization of perovskite solar cells (PSCs), which are retarded by the non-ideal interface leading to non-radiative recombination and degradation. Extensive efforts are devoted to reducing the defects at the perovskite surface.
We present that light absorption in organic solar cells (OSCs) can be significantly enhanced by a front-sided incorporation of a core–shell nanostructure consisting
Organic–inorganic lead trihalide perovskites have emerged as an outstanding photovoltaic material that demonstrated a high 17.9% conversion efficiency of sunlight to electricity in a short time.
Scientific Reports - Enhanced efficiency of carbon based all perovskite tandem solar cells via cubic plasmonic metallic nanoparticles with dielectric nano shells Skip to main content Thank you for
The potential of CsGeI 3 as a solar cell material is assessed based on its intrinsic properties. We find anomalously large Born effective charges and a large static dielectric constant dominated by lattice polarization, which should reduce carrier scattering, trapping, and recombination by screening charged defects and impurities.
The plasmonic properties of nanoparticles (NPs) such as silver (Ag) can be improved by utilizing core-shell materials in order to improve photon harvest in organic solar cells (OSCs). In this work, we utilized four dielectric materials, namely TiO $$_2$$ 2, SnO $$_2$$ 2, ZnO, and SiO $$_2$$ 2, to improve the near-field and far-field enhancement in addition to
We present that light absorption in organic solar cells (OSCs) can be significantly enhanced by a front-sided incorporation of a core–shell nanostructure consisting of a high-refractive-index...
Rear Optical Reflection and Passivation Using a Nanopatterned Metal/Dielectric Structure in Thin-Film Solar Cells Abstract: Currently, one of the main limitations in ultrathin Cu(In,Ga)Se 2 (CIGS) solar cells are the optical losses, since the absorber layer is thinner than the light optical path. Hence, light management, including rear optical reflection, and light trapping is needed. In this
In this paper, we have studied the performance of TOPCon solar cells on the lifetime of the base n-type or p-type c-Si Si wafers together with the application of various tunneling dielectric layers such as Si 3 N 4, Al 2 O 3, HfO 2
Suppressing the interfacial non-radiative recombination plays a critical role in reducing the voltage loss of perovskite solar cells. Herein, we develop a holistic interfacial regulation using dielectric materials of Al 2 O 3 and PEABr/PMMA, and a buffer layer of compact SnO X to manipulate the multiple interfaces.
The potential of CsGeI 3 as a solar cell material is assessed based on its intrinsic properties. We find anomalously large Born effective charges and a large static dielectric constant dominated by lattice polarization, which should reduce
We report on measurement of dielectric constant, mid-gap defect density, Urbach energy of tail states in CH 3 NH 3 PbI x Cl 1−x perovskite solar cells. Midgap defect densities were estimated by measuring capacitance
The fill factor (FF) of organic solar cells (OSCs), a critically important photovoltaic parameter, is still sub-optimal, often less than 0.8. To further reduce the FF gaps
Giant Dielectric Constant and Superior Photovoltaic Property of the Mechanochemically Synthesized Stable CH3NH3PbBr3 in a Hole Transporter-Free Solar Cell. ACS Sustainable Chemistry & Engineering 2020, 8 (3), 1445-1454.
The fill factor (FF) of organic solar cells (OSCs), a critically important photovoltaic parameter, is still sub-optimal, often less than 0.8. To further reduce the FF gaps with regard to the Shockley-Queisser upper limit, we present a study unveiling the impacts of dielectric properties on obtaining high FFs and photovoltaic efficiencies in
In this study, we propose a strategy to achieve the synergistic effects of dielectric screening and defect passivation in CsPbI 2 Br films by introducing a polar molecule 2,2,2-trifluoroethylamine hydrochloride (F 3 EACl) with a permanent dipole moment into the interface between perovskite and carbon electrode.
The fill factor (FF) of organic solar cells (OSCs), a critically important photovoltaic parameter, is still sub-optimal, often less than 0.8. To further reduce the FF gaps with regard to the Shockley-Queisser upper limit, we present a study unveiling the impacts of dielectric properties on obtaining high FFs and photovoltaic efficiencies in OSCs.
The potential of CsGeI 3 as a solar cell material is assessed based on its intrinsic properties. We find anomalously large Born effective charges and a large static dielectric constant dominated by lattice polarization, which should reduce carrier scattering, trapping, and recombination by screening charged defects and impurities. Defect
Owing to these unique chemical properties, fluorine-containing substituents are introduced into the organic solar cells to enhance the dielectric constant of polymer materials and optimize the performance of the devices [34], [35]. Here, three kinds of fluoroethylamine hydrochlorides are introduced to the surface of the perovskite layer to
In this study, we propose a strategy to achieve the synergistic effects of dielectric screening and defect passivation in CsPbI 2 Br films by introducing a polar molecule
This study investigates the application of dielectric composite nanostructures (DCNs) to enhance both antireflection and absorption properties in thin film GaAs solar cells, which are crucial for reducing production costs and improving energy conversion efficiency in photovoltaic devices. Building upon previous experimental validations, this
Organic–inorganic lead trihalide perovskites have emerged as an outstanding photovoltaic material that demonstrated a high 17.9% conversion efficiency of sunlight to electricity in a short time.
This study investigates the application of dielectric composite nanostructures (DCNs) to enhance both antireflection and absorption properties in thin film GaAs solar cells, which are crucial for reducing production costs
Stability and scalability are essential and urgent requirements for the commercialization of perovskite solar cells (PSCs), which are retarded by the non-ideal
The introduction of dielectric nanomaterials was one of the major advances in silicon solar cell development. Thermal oxidation of the Si wafer resulted in a substantial improvement of the surface passivation quality and this improvement was essential for the first solar cells surpassing the 20 % efficiency mark in the 1980s [1, 2].SiO 2 effectively suppresses
In this paper, we have studied the performance of TOPCon solar cells on the lifetime of the base n-type or p-type c-Si Si wafers together with the application of various
Suppressing the interfacial non-radiative recombination plays a critical role in reducing the voltage loss of perovskite solar cells. Herein, we develop a holistic interfacial
The fill factor (FF) of organic solar cells (OSCs), a critically important photovoltaic parameter, is still sub-optimal, often less than 0.8. To further reduce the FF gaps with regard to the Shockley-Queisser upper limit, we present a study unveiling the impacts of dielectric properties on obtaining high FFs and photovoltaic efficiencies in OSCs.
Here, we report a dielectric-screening effect enabled by controlling the space charge within formamidinium-cesium lead halide perovskites, and for the first time, we provide a coherent picture coupling the screening effect and device performance.
Note that here we only discuss electrons for simplicity, but the same principle applies to holes. The dielectric constant is the ratio of the permittivity of a substance to the permittivity of vacuum. It describes the degree to which materials can contain an electric flux and is also frequency dependent.
Here, we demonstrate that the defect capturing probability estimated by the capture cross-section is decreased by varying the dielectric response, producing the dielectric screening effect in the perovskite. The resulting perovskites also show reduced surface recombination and a weaker electron-phonon coupling.
Changes in the dielectric responses of the perovskite films lead to a substantial variation of Coulomb interactions and defect capture cross-sections, thereby producing a dielectric-screening effect.
Changes in the localized electric fields by the variation in the dielectric constant will lead to defect screening, which can mitigate the adverse effects of pristine unoccupied defects in the films.
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