| |
|
|
| Registros recuperados : 301 | |
| 122. |  | MARQUES, J. N.; LEITE, A. B.; LEITE, F. R. B.; BARRETO, M. M. S. Levantamento do potencial agrícola das terras do imóvel Serrote Branco/Luiz Ferreira. municipio de Jaguaretana - Ceará. IN: CONGRESSO BRASILEIRO DE CIÊNÇIA DO SOLO, 25., 1995, Viçosa, MG. Resumos expandidos. Viçosa: UFV, 1995. v.3, p. 1662-1663.| Biblioteca(s): Embrapa Tabuleiros Costeiros. |
|   |
| 126. | | LEITE, A. M. C.; HAY, J. D.; VALOIS, A. C. C.; SILVA, M. F. F. da. Observações preliminares sobre a biologia reprodutiva de Carapa guianensis Aublet (Meliaceae) - andiroba. In: INTERNATIONAL CONGRESS AND EXHIBITION ON FOREST, 5., 1999, Curitiba. Forest 99: [resumos]. Rio de Janeiro: BIOSFERA, 1999. 1 CD-ROM. Autoria bilíngue: CONGRESSO E EXPOSICAO INTERNACIONAL SOBRE FLORESTAS, 5., 1999, Curitiba.| Biblioteca(s): Embrapa Florestas. |
| |
| 128. | | GOMES, E. R.; VELOSO, C. A. C.; SOARES, U. M.; LEITE, A. de C. Seleção de cultivares de soja em diversas épocas de semeaduras, região Mearim, MA. In: SIMPÓSIO DO TRÓPICO ÚMIDO, 1., 1984, Belém, PA. Anais. Belém, PA: EMBRAPA-CPATU, 1986. v. 3, p. 251-254. (EMBRAPA-CPATU. Documentos, 36). v. 3 Culturas temporárias.| Biblioteca(s): Embrapa Amazônia Oriental. |
|  |
| 133. | | OLIVEIRA, M. I. L. de; GABOS, M. B.; MARTINS, E. de S.; LEITE, A. Uso de mistura de agrominerais silicáticos (blends) como fonte de k para a cultura da soja. In.: CONGRESSO BRASILEIRO DE ROCHAGEM, 3., 2016, Pelotas. Anais... Pelotas: Embrapa Clima Temperado; Brasília, DF: Embrapa Cerrados; Assis, SP: Triunfal, 2017. p. 417-420.| Biblioteca(s): Embrapa Cerrados. |
| |
| 136. | | ALEXANDRIA JUNIOR, F. F. de; ANTUNES, A.; LEITE, A. G.; LEITE, P. G.; LEITE, R. P.; PINTO SOBRINHO, P. F. Produção do algodoeiro BRS RUBI submetido a doses crescentes de composto orgânico e diferentes tipos de águas. In: CONGRESSO BRASILEIRO DO ALGODÃO, 8.; COTTON EXPO, 1., 2011, São Paulo. Evolução da cadeia para construção de um setor forte: Anais. Campina Grande, PB: Embrapa Algodão, 2011. p.1651-1655| Biblioteca(s): Embrapa Algodão. |
| |
| 137. | | PARAHYBA, R. da B. V.; LEITE, A. P.; OLIVEIRA NETO, M. B. de; SANTOS, J. C. P. dos. Hidropedologia. In: SANTOS, J. C. P. dos; ARAUJO FILHO, J. C. de (Ed.). Avaliação detalhada do potencial de terras para irrigação nas áreas de reassentamento de colonos do Projeto Jusante - área 3, Glória, BA. Recife: Embrapa Solos, 2008. cap. 3, p. 45-54.| Biblioteca(s): Embrapa Solos. |
| |
| 138. | | FREITAS, L. C. de; MACHADO, C. C.; SILVA, E.; SILVA, M. L. da; LEITE, Â. M. P.; FERNANDES, H. C. Impactos ambientais da substituição do guincho arrastador por skidder de esteiras. Floresta, Curitiba, v. 41, n. 3, p. 519-532, jul./set. 2011.| Biblioteca(s): Embrapa Florestas. |
| |
| 140. | | LEITE, A. C. R.; GUIMARÃES, M. P.; COSTA, J. O.; COSTA, H. M. de A.; LIMA, W. dos S. Curso natural das infecções helmínticas gastrintestinais em bezerros. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 16, n. 6, p. 891-894, nov./dez. 1981 Título em inglês: Course of helminthic gastrintestinal infection in calves.| Biblioteca(s): Embrapa Unidades Centrais. |
| |
| Registros recuperados : 301 | |
|
|
|
Registro Completo
|
Biblioteca(s): |
Embrapa Instrumentação. |
|
Data corrente: |
10/11/2023 |
|
Data da última atualização: |
15/01/2024 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Autoria: |
CONCEIÇÃO, L. R. B. da; CUNHA. H. O. da; LEITE, A. M. B.; BABU, R. S.; RAJA, S.; OLIVEIRA, C. R. de; BARROS, A. L. F. de. |
|
Afiliação: |
Centro Federal de Educação Tecnológica Celso Suckow da Fonseca; Centro Federal de Educação Tecnológica Celso Suckow da Fonseca; Centro Federal de Educação Tecnológica Celso Suckow da Fonseca; Centro Federal de Educação Tecnológica Celso Suckow da Fonseca; Federal University of São Carlos (UFSCar); CAUE RIBEIRO DE OLIVEIRA, CNPDIA; Centro Federal de Educação Tecnológica Celso Suckow da Fonseca. |
|
Título: |
Evaluation of Solar Conversion Efficiency in Dye-sensitized Solar Cells Using Natural Dyes Extracted from Alpinia purpurata and Alstroemeria Flower Petals as Novel Photosensitizers. |
|
Ano de publicação: |
2023 |
|
Fonte/Imprenta: |
Colorants, v. 2, 2023. |
|
Páginas: |
618 - 631 |
|
DOI: |
https://doi.org/10.3390/colorants2040032 |
|
Idioma: |
Inglês |
|
Conteúdo: |
bstract: Herein, we evaluate the conversion efficiency of dye-sensitized solar cells (DSSCs) photosensitized using two different natural dyes extracted from Alpinia purpurata and Alstroemeria flower petals. The appreciable absorption capacity of the extracts in the visible light region was examined through absorption spectroscopy. The functional groups of the corresponding pigments were identified through Fourier transform spectroscopy (FTIR) technique thus indicating the presence of cyanidin 3-glycosides and piperine in the flowers of Alstroemeria and Alpinia purpurata. The extracted dyes were immobilized on TiO2 on transparent conducting FTO glass, which were used as photoanode. The dye-coated TiO2 photoanode, pt photocathode and iodide/triiodide redox electrolyte assembled into a cell module was illuminated by a light source intensity 100 mW/cm2 to measure the photovoltaic conversion efficiency of DSSCs. The TiO2 anode and Pt counter electrode surface roughness and morphological studies were evaluated using atomic force microscope (AFM) and field emission scanning electron microscopy (FESEM), respectively. Through the photoelectric characterizations, it was promising to verify that the solar conversion efficiency was calculated with the photovoltaic cell sensitized by Alstroemeria and Alpinia purpurata. This was achieved with a yield (η) of 1.74% and 0.65%, with an open-circuit voltage (Voc) of 0.39 and 0.53 V, short-circuit current density (Jsc) of 2.04 and 0.49 mA/cm2 , fill factor (FF) of 0.35 and 0.40, and Pmax of 0.280 and 0.100 mW/cm2 respectively. The results are promising and demonstrate the importance of the search for new natural dyes to be used in organic solar cells for the development of devices that generate electricity in a sustainable way. Menosbstract: Herein, we evaluate the conversion efficiency of dye-sensitized solar cells (DSSCs) photosensitized using two different natural dyes extracted from Alpinia purpurata and Alstroemeria flower petals. The appreciable absorption capacity of the extracts in the visible light region was examined through absorption spectroscopy. The functional groups of the corresponding pigments were identified through Fourier transform spectroscopy (FTIR) technique thus indicating the presence of cyanidin 3-glycosides and piperine in the flowers of Alstroemeria and Alpinia purpurata. The extracted dyes were immobilized on TiO2 on transparent conducting FTO glass, which were used as photoanode. The dye-coated TiO2 photoanode, pt photocathode and iodide/triiodide redox electrolyte assembled into a cell module was illuminated by a light source intensity 100 mW/cm2 to measure the photovoltaic conversion efficiency of DSSCs. The TiO2 anode and Pt counter electrode surface roughness and morphological studies were evaluated using atomic force microscope (AFM) and field emission scanning electron microscopy (FESEM), respectively. Through the photoelectric characterizations, it was promising to verify that the solar conversion efficiency was calculated with the photovoltaic cell sensitized by Alstroemeria and Alpinia purpurata. This was achieved with a yield (η) of 1.74% and 0.65%, with an open-circuit voltage (Voc) of 0.39 and 0.53 V, short-circuit current density (Jsc) of 2.04 and 0.49 mA/... Mostrar Tudo |
|
Palavras-Chave: |
Dye-sensitized solar cells; Photosensitizers; Photovoltaics; Renewable energy. |
|
Categoria do assunto: |
-- |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1158222/1/P-Evaluation-of-Solar-Conversion-Efficiency-in-Dye-sensitized-Solar.pdf
|
|
Marc: |
LEADER 02669naa a2200265 a 4500
001 2158222
005 2024-01-15
008 2023 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.3390/colorants2040032$2DOI
100 1 $aCONCEIÇÃO, L. R. B. da
245 $aEvaluation of Solar Conversion Efficiency in Dye-sensitized Solar Cells Using Natural Dyes Extracted from Alpinia purpurata and Alstroemeria Flower Petals as Novel Photosensitizers.$h[electronic resource]
260 $c2023
300 $a618 - 631
520 $abstract: Herein, we evaluate the conversion efficiency of dye-sensitized solar cells (DSSCs) photosensitized using two different natural dyes extracted from Alpinia purpurata and Alstroemeria flower petals. The appreciable absorption capacity of the extracts in the visible light region was examined through absorption spectroscopy. The functional groups of the corresponding pigments were identified through Fourier transform spectroscopy (FTIR) technique thus indicating the presence of cyanidin 3-glycosides and piperine in the flowers of Alstroemeria and Alpinia purpurata. The extracted dyes were immobilized on TiO2 on transparent conducting FTO glass, which were used as photoanode. The dye-coated TiO2 photoanode, pt photocathode and iodide/triiodide redox electrolyte assembled into a cell module was illuminated by a light source intensity 100 mW/cm2 to measure the photovoltaic conversion efficiency of DSSCs. The TiO2 anode and Pt counter electrode surface roughness and morphological studies were evaluated using atomic force microscope (AFM) and field emission scanning electron microscopy (FESEM), respectively. Through the photoelectric characterizations, it was promising to verify that the solar conversion efficiency was calculated with the photovoltaic cell sensitized by Alstroemeria and Alpinia purpurata. This was achieved with a yield (η) of 1.74% and 0.65%, with an open-circuit voltage (Voc) of 0.39 and 0.53 V, short-circuit current density (Jsc) of 2.04 and 0.49 mA/cm2 , fill factor (FF) of 0.35 and 0.40, and Pmax of 0.280 and 0.100 mW/cm2 respectively. The results are promising and demonstrate the importance of the search for new natural dyes to be used in organic solar cells for the development of devices that generate electricity in a sustainable way.
653 $aDye-sensitized solar cells
653 $aPhotosensitizers
653 $aPhotovoltaics
653 $aRenewable energy
700 1 $aCUNHA. H. O. da
700 1 $aLEITE, A. M. B.
700 1 $aBABU, R. S.
700 1 $aRAJA, S.
700 1 $aOLIVEIRA, C. R. de
700 1 $aBARROS, A. L. F. de
773 $tColorants$gv. 2, 2023.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Instrumentação (CNPDIA) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
