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9. | | SANTOS, R. B.; OLIVEIRA, C. R. de. Estudo da liberação controlada de defensivos agrícolas utilizando carvão ativado. In: WORKSHOP DA REDE DE NANOTECNOLOGIA APLICADA AO AGRONEGÓCIO, 7.; ESCOLA DE NANOTECNOLOGIA, 3., 2013, São Carlos, SP. Anais... São Carlos, SP: Embrapa Instrumentação, 2013. p. 398-400 Editores: Maria Alice Martins, Odílio Benedito Garrido de Assis, Caue Ribeiro, Luiz Henrique Capparelli Mattoso. CD-ROM. Editores: Maria Alice Martins, Odílio Benedito Garrido de Assis, Caue Ribeiro, Luiz Henrique Capparelli Mattoso. Biblioteca(s): Embrapa Instrumentação. |
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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
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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.
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