Photoelectric performance evaluation of DSSCs using the dye extracted from different color petals of Leucanthemum vulgare flowers as novel sensitizers

Autor(es)

Ferreira, F. C. ^[1] ; Babu, R. Suresh ^[1] ; de Barros, A. L. F. ^[1] ; Raja, S. ^[2] ; da Conceicao, L. R. B. ^[1] ; Mattoso, L. H. C. ^[2]

Afiliação do(s) autor(es)

^[1] Ctr Fed Educ Tecnol Celso Suckow Fonseca, Lab Expt & Appl Phys, Ave Maracana 229, BR-20271110 Rio De Janeiro - Brazil

^[2] EMBRAPA Instrumentacao, Natl Nanotechnol Lab Agribusiness LNNA, BR-13560970 Sao Carlos, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY; v. 233, JUN 5 2020.
• Citações Web of Science: 0

Resumo

In this work, the natural flower extracted dyes containing luteolin were prepared using three different specimens from daisy flowers family (Leucanthemum vulgare), namely yellow daisy, purple daisy and wine daisy, according to the color of its petals. Moreover, DSSCs were fabricated using nanosized titanium dioxide (TiO2) as an anode; for the photocathodes, Iwo different specimens were used: i) graphite electrode and ii) platinum electrode. To recognize the light absorption behavior, the existence of anchoring groups and coloring components of the extracted dyes were determined using absorption spectroscopy. The surface roughness of the photoanodes and cathodes were examined using atomic force microscope (AFM). The photovoltaic performance and efficiency of assembled DSSCs were evaluated to realize the influence of TiO2 photoanodes on interaction of the Leucanthemum vulgare extracted dye molecules with graphite or platinum photocathodes. DSSCs fabricated with platinum cathode show higher conversion efficiency (eta) of 0.6%, 0.4% and 0.8% for the yellow daisy, wine daisy and purple daisy, respectively. DSSCs sensitized with daisy wine dye showed highest open-circuit voltage (V-oc ) of 520 mV and efficiency of 0.79% and 0.88%, for the graphite and platinum cathodes, respectively. These results showed that the DSSCs, using daisy flowers extracts as efficient photosensitizers, are suitable for the fabrication of environmentally safe, inexpensive, clean and renewable energy. (C) 2020 Published by Elsevier B.V. (AU)

• Processo FAPESP: 15/00094-0 - Modificações químicas de nanowhiskers de celulose
• Beneficiário: Raja Sebastian
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado