Listar por tema "solar cells"
-
A Rational Approach to Improve the Overall Performances of Semitransparent Perovskite Solar Cells by Electrode Optical Management
American Chemical Society (2024)Improving the overall characteristics of semitransparent solar cells (STSCs) is a very hard goal, not only because the absorption and the transmission of light through the device are two competitive processes but also ... -
Accelerating the Assessment of Hysteresis in Perovskite Solar Cells
American Chemical Society (2024)Halide perovskite materials have reached important milestones in the photovoltaic field, positioning them as realistic alternatives to conventional solar cells. However, unavoidable kinetic phenomena have represented a ... -
An intrinsic electrical conductivity study of perovskite powders MAPbX3 (X = I, Br, Cl) to investigate its effect on their photovoltaic performance
Royal Society of Chemistry (2024-02-07)An investigation into the intrinsic electrical conductivity of perovskite powders MAPbX3, where X represents iodine (I), bromine (Br), or chlorine (Cl), was conducted to explore its impact on their photovoltaic performance. ... -
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 ... -
Analytical model for light modulating impedance spectroscopy (LIMIS) in all-solid-state p-n junction solar cells at open-circuit
American Institute of Physics (2010-01-02)Potentiostatic impedance spectroscopy (IS) is a well-known tool for characterization of materials and electronic devices. It can be complemented by numerical simulation strategies relying on drift-diffusion equations without ... -
Assessing possibilities and limits for solar cells
Wiley (2011-05-05)What are the solar cell efficiencies that we can strive towards? We show here that several simple criteria, based on cell and module performance data, serve to evaluate and compare all types of today's solar cells. Analyzing ... -
Blade Coating High-Quality Formamidinium–Cesium Lead Halide Perovskites with Green Solvent for Efficient and Stable Solar Cells
Wiley (2022)Perfecting large-area perovskite film coating technology remains a key challenge to commercialize perovskite solar cells. Herein, nontoxic dimethyl sulfoxide (DMSO) is recommended as the only solvent to fabricate formamidinium ... -
Boosting Long-Term Stability of Pure Formamidinium Perovskite Solar Cells by Ambient Air Additive Assisted Fabrication
American Chemical Society (2021-09-13)Due to the high industrial interest for perovskite-based photovoltaic devices, there is an urgent need to fabricate them under ambient atmosphere, not limited to low relative humidity (RH) conditions. The formamidinium ... -
Boosting Power Conversion Efficiencies of Quantum-Dot-Sensitized Solar Cells Beyond 8% by Recombination Control
American Chemical Society (2015)At present, quantum-dot-sensitized solar cells (QDSCs) still exhibit moderate power conversion efficiency (with record efficiency of 6–7%), limited primarily by charge recombination. Therefore, suppressing recombination ... -
Ceramic Enamels as New Back Contacts for Cu (In, Ga) Se2-Based Photovoltaic Tile
Wiley (2015-02)In this work, we investigated the properties of silver and gold enamels as potential back contacts for Cu (In, Ga) Se2 (CIGS) solar cells. The enamels were deposited on ceramic tiles by nonvacuum printing techniques. Thus, ... -
Charge carrier transport and contact selectivity limit the operation of PTB7-based organic solar cells of varying active layer thickness
Royal Society of Chemistry (2013-08)In this work we study the different electrical loss pathways occurring during the operation of bulk heterojunction solar cells by using a variety of electrical and optical characterization techniques beyond the current ... -
Chemical Effects of Tin Oxide Nanoparticles in Polymer Electrolytes-Based Dye-Sensitized Solar Cells
American Chemical Society (2014-02)The effects on the photovoltaic performance of the incorporation of SnO2 nanoparticles into the polymer of a solid-state dye-sensitized solar cell (DSC) based on the poly(ethylene oxide)/poly(ethylene glycol) dimethyl ether ... -
Chemical Inductor
American Chemical Society (2022-03-22)A multitude of chemical, biological, and material systems present an inductive behavior that is not electromagnetic in origin. Here, it is termed a chemical inductor. We show that the structure of the chemical inductor ... -
Combining Perovskites and Quantum Dots: Synthesis, Characterization, and Applications in Solar Cells, LEDs, and Photodetectors
Wiley (2022)Metal halide perovskites having high defect tolerance, high absorption characteristics, and high carrier mobility demonstrate great promise as potential light harvesters in photovoltaics and optoelectronics and have ... -
Conjugated Organic Cations to Improve the Optoelectronic Properties of 2D/3D Perovskites
American Chemical Society (2017)Use of C6H5NH3I as an organic cation instead of CH3(CH2)3NH3I in the synthesis of 2D/3D perovskites (C6H5NH3I)2(CH3NH3I)n−1(PbI2)n leads to a material with significantly improved photovoltaic and optoelectronic properties ... -
Controlling the Phase Segregation in Mixed Halide Perovskites through Nanocrystal Size
American Chemical Society (2019)Mixed halide perovskites are one of the promising candidates in developing solar cells and light-emitting diodes (LEDs), among other applications, because of their tunable optical properties. Nonetheless, photoinduced phase ... -
Crystalline-Size Dependence of Dual Emission Peak on Hybrid Organic Lead-Iodide Perovskite Films at Low Temperatures
American Chemical Society (2018-09)In this work, we have investigated the crystalline-size dependence of optical absorption and photoluminescence emission of CH3NH3PbI3 films, which is necessary to identify the potential practical applications of the gadgets ... -
Current Challenges in the Development of Quantum Dot Sensitized Solar Cells
Wiley (2020-07)Quantum dot sensitized solar cells (QDSSCs) have experienced a continuous performance growth in the past years presenting a photoconversion efficiency > 13%. QDSSCs constitute a smart approach to take advantage of the ... -
Deleterious Effect of Negative Capacitance on the Performance of Halide Perovskite Solar Cells
American Chemical Society (2017)Negative capacitance in photovoltaic devices has been observed and reported in several cases, but its origin, at low or intermediate frequencies, is under debate. Here we unambiguously demonstrate a direct correlation ... -
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 ...