Photovoltaic Devices
Mostrando 1-12 de 27 artigos, teses e dissertações.
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1. Hybrid MAPbI3 Perovskite Growth Mechanism from Irregular Particles to Cuboid and Hopper-Type Morphologies
Methylammonium lead iodide (MAPbI3), used as light-harvesting layer in solar cell devices, has attracted great attention from scientific community due to its excellent photovoltaic performance. In this work, we have shown a comprehensive study on the hybrid organic-inorganic MAPbI3 perovskite growth mechanism from irregular small particles to cuboid shape fo
Journal of the Brazilian Chemical Society. Publicado em: 2022
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2. A 2.4 GHz Coplanar Solar Cell Patch Antenna with a Semi-Analytical Evaluation of Temperature Effects
Abstract Solar cells integrated with antennas have aroused scientific interest as an attractive energy source alternative in low power devices for IoT and Wireless Sensor Network applications. Since the space for all components in the systems is scarce, different integration ideas have been proposed in this field. However, further analysis of the performance
Journal of Microwaves, Optoelectronics and Electromagnetic Applications. Publicado em: 2022
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3. Flexible, Large-Area Organic Solar Cells With Improved Performance Through Incorporation of CoFe2O4 Nanoparticles in the Active Layer
Cobalt ferrite (CoFe2O4) nanoparticles (NPs), with an average diameter of about 4-10 nm, were produced by the proteic sol-gel method and successfully doped into the active layer of poly(3-hexylthiophene-2,5-diyl) (P3HT):[6,6]-phenyl-C61-butyric acid methyl ester (PCBM) organic solar cells. Pristine and CoFe2O4 NPs-doped blends of P3HT:PCBM were dispersed in
Mat. Res.. Publicado em: 13/01/2020
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4. Development of a Standard of Solarimetric Stations SONDA
Abstract With the increasing of energy demand in Brazil and the unprecedent popular support for the use of energy sources with low environmental impact, the market for photovoltaic energy has become progressively relevant. Thus, it is of strategic importance to gather information of the solar resources either for a particular location or a specific region.
Braz. arch. biol. technol.. Publicado em: 25/11/2019
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5. Uma revisão dos princípios da conversão fotovoltaica de energia
Resumo A conversão fotovoltaica de energia é uma área de pesquisa muito ativa devido à necessidade de ampliar a participação das fontes de energia renováveis na matriz energética global. Os esforços de pesquisa vão desde a modelagem de dispositivos fotovoltaicos a partir de princípios físicos fundamentais ou fenomenologias, passando pelo desenvol
Rev. Bras. Ensino Fís.. Publicado em: 07/10/2019
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6. Temperature influence on mobility and charge density model of photovoltaic cells
abstract Photovoltaic (PV) devices that capture the energy provided by the sun have great potential as renewable energy sources. However, the input parameters such as the luminous intensity and temperature of the solar cells tend to influence the operating characteristics in the solar panels. The inherent physical processes that cannot be altered limit the e
Rev. Bras. Ensino Fís.. Publicado em: 18/02/2019
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7. Recombination Study of Dye Sensitized Solar Cells with Natural Extracts
Natural dyes can be used in dye sensitized solar cells (DSSCs) to generate low-cost devices, although with low light harvesting because of energy losses from the recombination process. This study investigates recombination reactions in DSSCs with natural dyes extracted from eggplants, plums, and hibiscus flowers. Titanium dioxide films were coated on a fluor
J. Braz. Chem. Soc.. Publicado em: 2019-02
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8. Síntese da perovskita [KNbO3]0,9[BaNi0,5Nb0,5O3-δ]0,1 por combustão em solução
Resumo O desenvolvimento de perovskitas ferroelétricas capazes de absorver a luz visível, particularmente KBNNO - [KNbO3]0,9[BaNi0,5Nb0,5O3-δ]0,1 (band-gap Eg= 1,39 eV), tem encorajado a aplicação desses materiais na camada ativa de células solares. Em dispositivos fotovoltaicos, esses materiais podem permitir a obtenção de voltagens superiores à ma
Cerâmica. Publicado em: 2019-01
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9. Estudio Ab-initio de propiedades estructurales, elásticas y electrónicas de nanohilos core/shell
ABSTRACT This Zinc oxide (ZnO) is widely used in different electronic devices due to its thermal, electronic, and piro-piezoelectric properties. Some of these properties are noticeable improvement at the nanoscale, specially when ZnO together with other material create heterostructures. Recently, core/shell nanowires have been synthesized in order to raise t
Matéria (Rio J.). Publicado em: 19/07/2018
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10. Performance Evaluation of Titanate Nanotubes and Nanoribbons Deposited by Electrophoresis in Photoelectrodes of Dye-Sensitized Solar Cells
Nanoparticles of TiO2 have been the main semiconductor applied in Dye-sensitized solar cells (DSSCs). In this work, titanate nanotubes (NaTiNT) and nanoribbons, were obtained by the hydrothermal method from TiO2 anatase. These materials were deposited on conductive substrate by electrophoresis, with and without thermal treatment, sensitized by ruthenium-base
Mat. Res.. Publicado em: 28/05/2018
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11. CÉLULAS SOLARES SENSIBILIZADAS POR PONTOS QUÂNTICOS
Quantum dot solar cells (QDSC) have been subject of extensive research in recent years. QDSC, as a promising alternative to existing solar cells, are among the candidates for next-generation photovoltaic devices that require low cost, high efficiency, so that quantum dots stand out for their unique features and versatile desirable on photovoltaic systems. Th
Quím. Nova. Publicado em: 2017-05
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12. Síntese e caracterização de sistemas orgânicos semicondutores baseados em tiofeno-fenileno para aplicação em células fotovoltaicas
A combinação, intensificação ou surgimento de novas propriedades em sistemas molecularmente arquitetados e híbridos π-conjugados pode ser estrategicamente explorado na construção de dispositivos optoeletrônicos e produtores e armazenadores de energia. Este trabalho de tese, fruto de uma colaboração multidisciplinar, focaliza a síntese, a cara
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/09/2012