Listar por tema "impedance spectroscopy"
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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 Origin of Open Circuit Voltage in Dye Solar Cells
American Chemical Society (2012)Changes in the composition of the electrolyte are known to affect the parameters that determine the performance of dye solar cells. This paper describes a robust method for the analysis of the photovoltage in dye solar ... -
Analysis of the UV ozone-treated SnO2 electron transporting layer in planar perovskite solar cells for high performance and reduced hysteresis
Wiley - Blackwell (2019)Tin oxide (SnO2) is widely used as electron transporting layer (ETL) in perovskite solar cells (PSCs) because its good transparency, band alignment to perovskite and stability. The interface between the ETL and the ... -
Applications of impedance spectroscopy in thermoelectricity
The Abdus Salam International Centre for Theoretical Physics (ICTP) (2019-03-12)t is widely used in a lot of different fields (solar cells, fuel cells, corrosion, supercapacitors, batteries, etc.). • Powerful and very reliable equipment are available in the market. • It allows the separation of the ... -
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 ... -
C60 Thin Films in Perovskite Solar Cells: Efficient or Limiting Charge Transport Layer?
American Chemical Society (2022-02-28)In this work, we identify the importance of C60 and compact-TiO2 (cTiO2) as electron transport layers on the device performance of coevaporated n–i–p perovskite solar cells. We found (1) a synergetic effect between both ... -
Characterization of Aerosol Deposited Cesium Lead Tribromide Perovskite Films on Interdigited ITO Electrodes
John Wiley & Sons (2021-01-15)Aerosol deposition (AD) is a promising additive manufacturing method to fabricate low-cost, scalable films at room temperature, but has not been considered for semiconductor processing, so far. The successful preparation ... -
Characterization of thermal contacts between heat exchangers and a thermoelectric module by impedance spectroscopy
Elsevier (2019)Heat to electricity energy conversion efficiency of a thermoelectric (TE) device is not only influenced by the TE materials properties, but it also depends on the temperature difference between both sides of the TE legs. ... -
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 ... -
Current-voltage characteristics of bulk heterojunction organic solar cells: connection between light and dark curves
Wiley (2011-11)A connection is established between recombination and series resistances extracted from impedance spectroscopy and current-voltage curves of polythiophene:fullerene organic solar cells. Recombination is shown to depend ... -
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 ... -
Determination of the thermoelectric properties of a skutterudite-based device at practical operating temperatures by impedance spectroscopy
Elsevier (2019-10-01)Skutterudite-based thermoelectric materials are promising candidates for waste heat recovery applications at intermediate temperatures (300–500 °C) owing to their high dimensionless figure of merit and power factor. Recently, ... -
Determination of thermal conductivity, thermal diffusivity, and specific heat of liquids using a thermoelectric module
IOP Publishing (2024)Managing heat through working fluids is essential in many applications, as well as the development of new fluids with improved properties. Therefore, the characterization of their thermal properties, which is usually a ... -
Device Physics of Hybrid Perovskite Solar cells: Theory and Experiment
Wiley (2018)Perovskite solar cells (PSCs) exhibit a series of distinctive features in their optoelectronic response which have a crucial influence on the performance, particularly for long-time response. Here, a survey of recent ... -
Diffusion-Recombination Impedance Model for Solar Cells with Disorder and Nonlinear Recombination
Wiley-VCH (2013-09-23)The diffusion–recombination model is a key tool in understanding the photovoltaic operation of solar cells. Dye-sensitized solar cells, organic solar cells, and inorganic semiconductor solar cells are systems affected by ... -
Effect of Pristine Graphene on Methylammonium Lead Iodide Films and Implications on Solar Cell Performance
American Chemical Society (2021)The relatively low stability of solar cells based on hybrid halide perovskites is the main issue to be solved for the implementation in real life of these extraordinary materials. Degradation is accelerated by temperature, ... -
Effect of the chromophores structures on the performance of solid-state dye sensitized solar cells
World Scientific Publishing (2014)The effect of metal-free chromophores on dye-sensitized solar cell performance is investigated. Solid state dye-sensitized solar cells (ssDSCs) using different molecular sensitizers based on triphenylamine (TPA) with ... -
Effect of the electrophoretic deposition of Au NPs in the performance CdS QDs sensitized solar cells
Elsevier (2016)Solution-processed mesoscopic oxide semiconductor-based materials offer potentially low-cost and high stability alternative for next generation of solar cells, and metallic nanoparticles had shown to be a good alternative ... -
Electrochemical reduction of HMF to synthesize added value compounds using CuAg electrodes
Elsevier (2023-12-16)In biorefining, Green electrochemistry offers an intelligent approach to produce valuable chemicals that are not derived from fossil fuels. In this study, we demonstrate the electrochemical reduction of 5-hydroxymethylfurfural ...