Dye Sensitizers
Mostrando 1-8 de 8 artigos, teses e dissertações.
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1. Celdas solares sensibilizadas con colorantes fotosensibles obtenidos de plantas de la región sur de ecuador
Four vegetal species of the southern of Ecuador were used as sensitizers for making dye-sensitized solar cells (DSSCs). The effect of type and amount of material, type and time of maceration were tested in order to determine the best conditions of extraction. The extraction of the natural dye was made with acidified ethanol. The sensitizing agents were adsor
Quím. Nova. Publicado em: 2017-04
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2. Effects of Methyl-Substituted Phenanthrolines on the Performance of Ruthenium(II) Dye-Sensitizers
Tris-heteroleptic ruthenium(II) cis-[Ru(Me4-phen)(dcbH2)(NCS)2], where Me4-phen = 3,4,7,8-tetramethyl-1,10-phenanthroline, dcbH2 = 4,4'-dicarboxylic acid 2,2'-bipyridine, was synthesized, purified and characterized. Its characteristics were compared with those determined for cis-[Ru(Me2-phen)(dcbH2)(NCS)2] and cis-[Ru(phen)(dcbH2)(NCS)2] aiming to evaluate t
J. Braz. Chem. Soc.. Publicado em: 2015-11
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3. New polypyridyl ruthenium(II) sensitizers for nanocrystalline solar cells / Novos sensibilizadores Polipiridínicos de rutênio(II) para células solares sensibilizadas por corantes
Foram avaliadas duas metodologias de síntese de complexos tris- heterolépticos de rutênio(II) denominadas metodologia em várias etapas e one pot. A primeira emprega o cis-[Ru(DMSO)4Cl2] como composto de partida e cada ligante é adicionado na reação sequencialmente em uma nova reação. Observou-se que esta metodologia resultou em baixa reprodutibilida
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 06/05/2011
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4. Aplicação do corante da casca da berinjela em células solares fotossensibilizadas. / Application of dye from the peel of eggplant in photosensitizer in solar cells.
Despite the efficiency of conventional solar cells reach about 20%, the cost of producing electricity using photovoltaic panels about 42 cents per kWh is still much higher than the cost of power generated by hydroelectric, 8 cents per kWh. Given the high cost of producing solar panels, woke up the interest in solar cells using dyes fotoexcitáveis known as G
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/02/2011
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5. Estudo de novos corantes naturais fotoexcitaveis como sensibilizadores em células solares. / Study fotoexcitaveis new natural dyes as sensitizers in solar cells.
Células solares sensibilizadas por corante têm sido estudadas na última década como uma promissora fonte de energia renovável, devido à sua tecnologia de fabricação de baixo custo em comparação com células solares de silício. O mais bem sucedido sensibilizador com transferência eletrônica foto-induzida empregado até agora nessas células são
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/02/2011
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6. Em busca da sustentabilidade: células solares sensibilizadas por extratos naturais
The present work reports the use of anthocyanins extracted from mulberry (Morus Alba L.), raspberry (Rubus Idaeus L.) and blueberry (Vaccinium myrtillus L.) as sensitizers in dye-sensitized solar cells. The conversion efficiency of these devices is dependent on the extracts employed and can be rationalized in terms of their composition and spectral propertie
Química Nova. Publicado em: 2010
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7. Sistemas químicos integrados via complexos de rênio(I) e rutênio(II) na conversão de energia / Chemical integrated systems via rhenium and ruthenium complexes on energy conversion
The focus of this work is on two chemical integrated systems: dye-sensitized solar cells, Dye-Cells®, and photosensors based on rhenium(I) compounds. Novel ruthenium(II) compounds were synthesized, characterized and investigated as dye-sensitizers. The results of solar cells sensitized by cis-[(H3BCN)2Ru(dcbH2)2], H3BCN- = cyanoborohydride, dcbH2 = acid-4,4
Publicado em: 2007
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8. Photo-induced inactivation of viruses: adsorption of methylene blue, thionine, and thiopyronine on Qbeta bacteriophage.
The adsorption of cationic organic dyes (methylene blue, thionine, and thiopyronine) on Qbeta bacteriophage was studied by UV-visible and fluorescence spectroscopy. The dyes have shown a strong affinity to the virus and some have been used as sensitizers for photo-induced inactivation of virus. In the methylene blue concentration range of 0.1-5 microM and at