Listar por tema "perovskite solar cells"
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A Perovskite Photovoltaic Mini-Module-CsPbBr3 Photoelectrochemical Cell Tandem Device for Solar-Driven Degradation of Organic Compounds
American Chemical Society (2023-10-02)Recently, halide perovskites have been widely explored for high-efficiency photocatalysis or photoelectrochemical (PEC) cells. Here, in order to make an efficient photoanode electrode for the degradation of pollutants, ... -
An Equivalent Circuit for Perovskite Solar Cell Bridging Sensitized to Thin Film Architectures
Elsevier (2019-08-15)Fundamental working mechanisms of perovskite solar cells (PSCs) remain an elusive topic of research. Impedance spectroscopy (IS) has been key to characterizing photovoltaic devices; however, its application to PSCs has ... -
Analysis of the Hysteresis Behavior of Perovskite Solar Cells with Interfacial Fullerene Self-Assembled Monolayers
American Chemical Society (2016-10)The use of self-assembled monolayers (SAMs) of fullerene derivatives reduces the hysteresis of perovskite solar cells (PSCs). We have investigated three different fullerene derivatives observing a decrease on hysteresis ... -
Analysis of the Influence of Selective Contact Heterojunctions on the Performance of Perovskite Solar Cells
ACS (2018-03)Knowledge of the mechanisms that take place at the selective contacts, located at the charge-transport-layer (CTL)/perovskite heterojunctions, is crucial for the optimization of perovskite solar cells. Anomalous high ... -
Beyond Impedance Spectroscopy of Perovskite Solar Cells: Insights from the Spectral Correlation of the Electrooptical Frequency Techniques
American Chemical Society (2020-09-21)Small perturbation techniques have proven to be useful tools for the investigation of perovskite solar cells. A correct interpretation of the spectra given by impedance spectroscopy (IS), intensity-modulated photocurrent ... -
Beyond Protocols: Understanding the Electrical Behavior of Perovskite Solar Cells by Impedance Spectroscopy
Wiley (2023-08-11)Impedance spectroscopy (IS) is an effective characterization technique used to probe and distinguish charge dynamics occurring at different timescales in optoelectronic and electric devices. With the rapid rise of research ... -
Changes from Bulk to Surface Recombination Mechanisms between Pristine and Cycled Perovskite Solar Cells
American Chemical Society (2017)Several aspects on the photophysical characterization of lead halide hybrid organic–inorganic perovskite solar cells remain unsolved. It has been observed that ionic transport and polarization of the interfaces cause very ... -
Consolidation and Expansion of Perovskite Solar Cell Research
American Chemical Society (2016-03)Hysteresis, band transport, polaron transport, balanced charge transport, diffusion length, vacancies, ion migration, defects, doping, traps, exciton binding energy, luminescence, hot carrier cooling, lasing, ampli fied ... -
Correcting unintended changes in electroluminescence perturbation for reliable light intensity modulated spectroscopies
IOP Publishing (2023-07-21)Light intensity modulated photocurrent and photovoltage spectroscopies, IMPS and IMVS respectively, are characterization techniques for studying charge carrier transport and recombination properties of photosensitive samples ... -
Crystalline Clear or Not: Beneficial and Harmful Effects of Water in Perovskite Solar Cells
Wiley (2019-10-16)Clarification of how water affects the photovoltaic performance of perovskite solar cells is one of the major challenges to successfully develop a large‐scale low‐cost fabrication process. Many authors have reported ... -
Degradation analysis of perovskite solar cells doped with MABr3 via electrochemical impedance
Elsevier (2023)In this study, perovskite solar cells with a structure CsyFA1-xMAxCS0.05Pb(I1.05-xBrx)3, with X = 0 (no doping was added to the base structure CsFAPbI3) and X = 0.085 (CsFAPbI3 was doped with 8.5% MABr3) were prepared ... -
Degradation Analysis of Triple-Cation Perovskite Solar Cells by Electrochemical Impedance Spectroscopy
American Chemical Society (2022)In this work, the electrical properties of different triple-cation compositions with the formula Cs0.05FA1–XMAXPb(I1–XBrX)3 have been analyzed using electrochemical impedance spectroscopy. The perovskite solar cells were ... -
Effect of Environmental Humidity on the Electrical Properties of Lead Halide Perovskites
ACS (2018-12)In large quantities, water is detrimental to lead halide perovskite solar cells, mainly because of the decomposition of the perovskite layer. In contrast, the presence of small quantities of water has been observed to play ... -
Effect of Mesostructured Layer upon Crystalline Properties and Device Performance on Perovskite Solar Cells
American Chemical Society (2015-04)One of the most fascinating characteristics of perovskite solar cells (PSCs) is the retrieved obtainment of outstanding photovoltaic (PV) performances withstanding important device configuration variations. Here we have ... -
Effects of Frequency Dependence of the External Quantum Efficiency of Perovskite Solar Cells
American Chemical Society (2018-05)Perovskite solar cells are known to show very long response time scales, on the order of milliseconds to seconds. This generates considerable doubt over the validity of the measured external quantum efficiency (EQE) and ... -
Effects of Ion Distributions on Charge Collection in Perovskite Solar Cells
American Chemical Society (2017) -
Efficient and Stable Blue- and Red-Emitting Perovskite Nanocrystals through Defect Engineering: PbX2 Purification
American Chemical Society (2021-11-11)Current efforts to reduce the density of structural defects such as surface passivation, doping, and modified synthetic protocols have allowed us to grow high-quality perovskite nanocrystals (PNCs). However, the role of ... -
Electron injection and scaffold effects in perovskite solar cells
Royal Society of Chemistry (2016-12)In spite of the impressive efficiencies reported for perovskite solar cells (PSCs), key aspects of their working principles, such as electron injection at the contacts or the suitability of the utilization of a specific ... -
Electron Transport Layer-Free Solar Cells Based on Perovskite? Fullerene Blend Films with Enhanced Performance and Stability
Wiley (2016-08)The solution processing of pinhole-free methylammonium lead triiodide perovskite–C70 fullerene (MAPbI3:C70) blend films on fluorine-doped tin oxide (FTO)-coated glass substrates is presented. Based on this approach, a ... -
Enhanced nanoscopy of individual CsPbBr3 perovskite nanocrystals using dielectric sub-micrometric antennas
AIP Publishing (2020-02-11)We demonstrate an efficient, simple, and low-cost approach for enhanced nanoscopy in individual green emitting perovskite (CsPbBr3)nanocrystals via TiO2dielectric nanoantenna. The observed three- to five-fold ...