Photovoltaic Effect
Mostrando 1-12 de 13 artigos, teses e dissertações.
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1. Study of the Performance Reduction Due to the Dirt Effect in the Photovoltaic Systems of UTFPR - Curitiba
ABSTRACT Photovoltaic systems have been consolidated in the global energy scenario as an option of low environmental impact energy generation, high reliability and great applicability in urban centers, acting like energy generators near the point of consumption. The Federal University of Technology of Paraná (UTFPR), with the proposal of testing the perform
Braz. arch. biol. technol.. Publicado em: 29/10/2018
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2. Use of SnOx:F in the Recycling of Silicon Solar Cells
Amongst the many parts of a silicon cells photovoltaic module, silicon is the most important and expensive constituent. Thus, research on silicon recycling from damaged cells can lead to economic and environmental benefits. In this work, the broken silicon cells were tailored to function along with the fluorine-doped tin oxide as the transparent electric con
Mat. Res.. Publicado em: 22/01/2018
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3. Tunable Photochemical/Redox Properties of (Phenylthio)ncorannulenes: Application to a Photovoltaic Device
The additive substituent effect of phenylmercapto derivatives of corannulene are investigated by spectroscopic, electrochemical, and computational techniques. The per-substituted phenylmercaptocorannulene is incorporated as a replacement for [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) in a photovoltaic device.
J. Braz. Chem. Soc.. Publicado em: 2016-10
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4. Conversor eletrônico de potência trifásico para sistema fotovoltaico conectado à rede elétrica / Three-phase power converter for grid-connected photovoltaic system
Este trabalho é uma contribuição ao estudo de conversores eletrônicos para sistemas fotovoltaicos de geração distribuída de energia elétrica. O objetivo principal é apresentar o desenvolvimento e os resultados de um conversor eletrônico trifásico para a conexão de um conjunto de painéis solares fotovoltaicos à rede elétrica de baixa tensão. S
Publicado em: 2010
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5. O estado da arte da síntese de semicondutores nanocristalinos coloidais
Colloidal semiconductor nanocrystals, also known as quantum dots, have attracted great attention since they have interesting size-dependent properties due to the quantum confinement effect. These nanoparticles are highly luminescent and have potential applications in different technological areas, including biological labeling, light-emitting diodes and phot
Química Nova. Publicado em: 2010
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6. Corrosão anisotropica e formação de superficie nanoestruturada de Si utilizando plasma de alta densidade / Si anisotropic etching and nanostructured surface formation using high density plasma
This work explores the implementation, characterization and applications of BOSCH type process for bulk silicon etching (or bulk silicon micromachining) using inductively coupled high density plasma (ICP). This etching process is characterized by its high anisotropy and is performed by alternating etching steps, employing SF6 + Ar gas mixture, and passivatio
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/07/2009
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7. Efeito da temperatura na geraÃÃo de energia de mÃdulos fotovoltaicos submetidos a condiÃÃes climÃticas distintas. Estudo de caso para as localidades de Recife e Araripina
Understanding in greater depth the effect of temperature on the performance of photovoltaic modules submitted to varied climatic conditions is the purpose of this work. With this objective, diverse models proposed in literature were studied and the five parameter model was defined as the most appropriate for characterization of photovoltaic cells. The concep
Publicado em: 2008
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8. Use of polymer poli (N-vinylcarbazole) for photovoltaic applications. / Fabricação e caracterização de uma célula solar à partir do polímero poli (N-vinilcarbazol) - PVK dopado com perclorato de lítio.
The objective of this article is to demonstrate that the Poly(N-vinylcarbazole) PVK dumped with lithium perchlorate (LiClO4) can transform solar energy to electrical energy. This polymer material has the property of absorbing and generate electron hole pairs, providing an electric current when exposed to enlightenment. To achieve that, a solar cell has been
Publicado em: 2008
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9. Metodologia de projeto de sistema hÃbrido eÃlico/solar/diesel aplicado à Vila de Sucuriju-AmapÃ
The growing global concern with the issue of greenhouse effect gases, and the need for use of electricity in isolated regions serves as a spur to development and dissemination of technologies for decentralized generation of electricity with clean and renewable sources. This work focuses on methodologies and tools for design of hybrid energy systems and demon
Publicado em: 2007
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10. Resistência interna de células solares fotovoltaicas de Si e TiO2
Interest in research concerning renewable energy sources has grown in recent decades. In this context the study of the physical processes important in the conversion of solar energy radiation via the photovoltaic effect has increasingly been studied theoretically and experimentally. In this thesis we take a thermodynamical approach to the solar energy conver
Publicado em: 2005
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11. Efeito fotovoltaico e fotocondutividade em dispositivos poliméricos / Photovoltaic effect and photoconductivity in polymer devices
Os polímeros conjugados têm sido objeto de estudo nos últimos vinte anos devido à grande variação observada em sua condutividade quando sob dopagem química. A maioria dos polímeros dessa família passa de isolante, quando não dopados ou fracamente dopados, a bons condutores de eletricidade quando fortemente dopados. Em dopagens intermediárias apres
Publicado em: 2000
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12. Espectroscopia optica em super-redes de GaAs com dopagem delta de Si
We performed the GaAs Si delta doped superlattices optical characterization, using spectroscopic techniques as photoluminescence, photoluminescence sxcitation, time resolved photoluminescence, Raman scattering and time resolved photorefletance. Their electronic structure is such that the electron gas is confined in minibands along the growth direction and pr
Publicado em: 1997