ListarInstitute of Advanced Materials (INAM) por tema "perovskite solar cells"
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In the Limelight: Perspective Collections on Perovskites
American Chemical Society (2017-08)In our inaugural “ In the Limelight ” Viewpoint, we revisited five high-impact papers that were published in The Journal of Physical Chemistry Letters ( JPC Letters ) in 2014, and we noted that four of the five were written ... -
Inductive Loop in the Impedance Response of Perovskite Solar Cells Explained by Surface Polarization Model
American Chemical Society (2017-03)The analysis of perovskite solar cells by impedance spectroscopy has provided a rich variety of behaviors that demand adequate interpretation. Two main features have been reported: First, different impedance spectral arcs ...
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Influence of Charge Transport Layers on Open-Circuit Voltage and Hysteresis in Perovskite Solar Cells
Elsevier (2018-04)Perovskite materials have experienced an impressive improvement in photovoltaic performance due to their unique combination of optoelectronic properties. Their remarkable progression, facilitated by the use of different ... -
Interpretation of the photoluminescence decay kinetics in metal halide perovskite nanocrystals and thin polycrystalline films
Elsevier (2020-05)In this paper we present critical analysis of different points of view on interpretation of the photoluminescence (PL) decay kinetics in lead halide perovskites prepared in the form of well passivated nanocrystals (PNCs) ...
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Operation Mechanism of Perovskite Quantum Dot Solar Cells Probed by Impedance Spectroscopy
American Chemical Society (2018)We fabricated perovskite quantum dot solar cells (PQDSCs) and varied the thickness of the QD layer by controlling the number of deposition cycles; the cells were systematically investigated with impedance spectroscopy. ...
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Origins and mechanisms of hysteresis in organometal halide perovskites
IOP (2017-04)Inorganic–organic halide organometal perovskites, such as CH3NH3PbI3 and CsPbI3, etc, have been an unprecedented rising star in the field of photovoltaics since 2009, owing to their exceptionally high power conversion ...
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Overcoming ionic migration in perovskite solar cells through alkali metals
Elsevier (2024-01-17)Alkali metals, as additives in perovskite solar cells (PSCs), have been extensively investigated for their impact on performance enhancement. This performance is sensitive to ion-driven interfacial recombination processes ...
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PbS quantum dots as additives in methylammonium halide perovskite solar cells: the effect of quantum dot capping
Royal Society of Chemistry (2019-09)Colloidal PbS quantum dots (QDs) have been successfully employed as additives in halide perovskite solar cells (PSCs) acting as nucleation centers in the perovskite crystallization process. For this strategy, the surface ...
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Perovskite Solar Cell Modeling Using Light- and Voltage-Modulated Techniques
American Chemical Society (2019-02-27)The analysis of the impedance spectroscopy (IS) data of perovskite solar cells (PSCs) has been challenging so far, with the low-frequency phenomena in particular yielding ambivalent results and interpretations. We tackle ...
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Photovoltage Behavior in Perovskite Solar Cells under Light-Soaking Showing Photoinduced Interfacial Changes
American Chemical Society (2017)The photovoltage of perovskite solar cells (PSCs) was studied over a wide range of light intensities, showing changes from pristine to light-soaking (LS) conditions, explained using a specific model of spatial charge ...
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Properties of Contact and Bulk Impedances in Hybrid Lead Halide Perovskite Solar Cells Including Inductive Loop Elements
American Chemical Society (2016)Impedance spectroscopy offers access to all the different electronic and ionic processes taking place simultaneously in an operating solar cell. To date, its use on perovskite solar cells has been challenging because of ...
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Real-Time Observation of Iodide Ion Migration in Methylammonium Lead Halide Perovskites
Wiley (2017)Organic-inorganic metal-halide perovskites (e.g. CH3NH3PbI3-xClx) emerged as a promising opto-electronic material. However, the Shockley–Queisser Limit for the power conversion efficiency (PCE) of perovskite-based photovoltaic ...
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Single-Exciton Amplified Spontaneous Emission in Thin Films of CsPbX3 (X = Br, I) Perovskite Nanocrystals
American Chemical Society (2019-09-23)CsPbX3 perovskite nanocrystals (PNCs) have emerged as an excellent material for stimulated emission purposes, with even more prospective applications than conventional colloidal quantum dots. However, a better understanding ...
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Stabilizing perovskite solar cells with modified indium oxide electron transport layer
Elsevier (2023)Despite the impressive progress, the perovskite solar cells are still under the stage of laboratory research, mainly because of their inferior operational stability. To improve the device lifetime, one of the most important ...
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Suppressing the Formation of High n-Phase and 3D Perovskites in the Fabrication of Ruddlesden-Popper Perovskite Thin Films by Bulky Organic Cation Engineering
American Chemical Society (2022-02-24)Two-dimensional perovskites (2D PVKs) were first studied because of their dielectric and magnetic properties for dielectric and transistor applications in the electronic field. As the optical properties were elucidated ...
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Surface Polarization Model for the Dynamic Hysteresis of Perovskite Solar Cells
American Chemical Society (2017-02)The dynamic hysteresis of perovskite solar cells consists of the occurrence of significant deviations of the current density–voltage curve shapes depending on the specific conditions of measurement such as starting voltage, ...
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Synergistic effect of multifunctional MXene-nanosheet and naphthoquinone sulfonate toward high-performance perovskite solar cells and modules
Elsevier (2023-08-28)Interface defect passivation strategies play a vital role in the design of efficient, and stable perovskite solar cells (PSCs). Presently, we combine MXene-nanosheets with a 1,2-naphthoquinone-4-sulfonic acid sodium salt ...
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Tailoring Crystal Structure of FA0.83Cs0.17PbI3 Perovskite Through Guanidinium Doping for Enhanced Performance and Tunable Hysteresis of Planar Perovskite Solar Cells
Wiley (2019)Current-voltage hysteresis of perovskite solar cells (PSCs) has raised the concern of accurate performance measurement in practice. Although various theories have been proposed to elucidate this phenomenon, the origin of ...
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Theory of Light-Modulated Emission Spectroscopy
American Chemical Society (2017-07)Perovskite solar cells and fluorescent collectors formed by a dispersion of quantum dots in a transparent solid are paradigmatic devices for photon capture and utilization that involve the coupling of photon displacement, ...
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Towards the Next Decade for Perovskite Solar Cells
Wiley (2020-02-07)In 2009, a study on the use of halide perovskites as light sensi-tizers in liquid dye-sensitized solar cells went almost unnoticeduntil three years later, when an outstanding performance for all-solid perovskite solar cell ...
