Pomegranate leaves and mulberry fruit as natural sensitizers for dye-sensitized solar cells

Chang, Ho; Lo, Yu-Jen

doi:10.1016/j.solener.2010.07.009

Cited by 234 publications

(105 citation statements)

References 26 publications

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“…Finalmente, el electrolito líquido se inyectó desde la parte inferior de la celda hasta llenar todo el espacio de la misma, según lo reportado por Chang y Lo. 16 …”

Section: Ensamblaje Y Pruebas En Celdas Solaresunclassified

Celdas solares sensibilizadas con colorantes fotosensibles obtenidos de plantas de la región sur de Ecuador

Cabrera¹,

Figueroa²,

Ramirez-Perez³

et al. 2016

Quim. Nova

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SENSITIZED SOLAR CELLS WITH PHOTOSENSITIVE DYES OBTAINED FROM PLANTS OF THE SOUTHERN REGION OF 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 adsorbed on TiO 2 nanoparticles in small solar cells. The DSSCs made with natural dyes from extracts of blackberry (Rubus glaucus B), mortiño (Solanum americanum Mill), escancel (Iresine herbstii Hook) and beet (Beta vulgaris L) developed an open-circuit tension (Voc) 0.65, 0.5, 0.45 and 0.19 V, respectively. The short-circuit currents (Isc) varies from 2.05 to 19.68 mA cm -2 and the fill factor ranging from 0.61 to 0.69. The DSSCs sensitized with the extract of Rubus glaucus B offered the highest maximum power of 8.83 mW. Thus, the natural dyes used showed great potential as sensitizers in DSSCs, besides being environmentally friendly and their low cost.Keywords: Dye-sensitized solar cell; natural dyes; nanoparticles TiO 2 . INTRODUCCIÓNEn el siglo XXI la humanidad se enfrenta al reto del incremento global de la demanda de energía y el control del nivel de emisiones de CO 2 para reducir el efecto invernadero. Por lo cual surge la necesidad en el desarrollo de fuentes de energías alternativas por medio del desarrollo de energías renovables, asegurando protección y armonía con el medio ambiente. 1 Una de estas fuentes de energía alternativa y renovable es el aprovechamiento de la energía solar, mediante la aplicación en celdas solares. Hoy en día, las celdas solares convencionales son basadas en silicio. Sin embargo, su desventaja son los altos costos de fabricación. 2 Otra fuente de energía son los combustibles fósiles, más económicos pero con las desventajas de ser un recurso no renovable y de alta contaminación. 3 Las celdas solares sensibilizadas con colorantes (DSSCs), han despertado un gran interés desde la publicación de O'regan y Grätzel, 4 debido a que representan una alternativa potencial y relativamente económica en comparación con el silicio que son actualmente los más utilizados.Las DSSCs consisten en un electrodo o ánodo, un contra--electrodo o cátodo, electrolito redox (reducción y oxidación) y un agente sensibilizador. 5 En estas celdas, el colorante sensibilizador juega un papel clave en la absorción de la luz solar y la conversión de energía solar en energía eléctrica. Hoy en día, algunos complejos metálicos y colorantes orgánicos se han sintetizado y usado como sensibilizadores. Por el momento, la mayor eficiencia en DSSCs se da por Ru que contienen compuestos absorbidos en TiO 2 nanocristalino alcanzando un 11.1% y una potencia máxima de 2.429 mW. 6 Aunque tales DSSCs han proporcionado un rendimiento relativamente alto, hay varias desventajas de la utilización de metales nobles, debido a su limitada disponibilidad; por lo tanto su producción es...

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“…Finalmente, el electrolito líquido se inyectó desde la parte inferior de la celda hasta llenar todo el espacio de la misma, según lo reportado por Chang y Lo. 16 …”

Section: Ensamblaje Y Pruebas En Celdas Solaresunclassified

Celdas solares sensibilizadas con colorantes fotosensibles obtenidos de plantas de la región sur de Ecuador

Cabrera¹,

Figueroa²,

Ramirez-Perez³

et al. 2016

Quim. Nova

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“…Natural dyes offers a suitable alternative to high cost inorganic based DSSCs. Naturally, the fruits, flowers and leafs of plant shows different colors from red to purple and include different natural dyes which can be extracted using simple procedure and used for DSSC fabrication [30]. Consideration have been made on natural pigments as a promising alternative sensitizer dyes for DSSC because of their simple production technique, affordable cost, complete biodegradation, easy availability, purity grade, environmental friendly, high reduction of noble metal, and chemical synthesis cost [31][32][33].…”

Section: Natural Dye Sensitizersmentioning

confidence: 99%

Review on Natural Dye-Sensitized Solar Cells (DSSCs)

Adedokun¹,

Titilope²,

Awodugba³

2016

IJET

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Abstract-In a conversion system of pure and non-convectional solar energy to electricity, dye sensitized solar cells (DSSCs) encourage the fabrication of photovoltaic devices providing high conversion efficiency at low cost. The dye as a sensitizer plays a vital role in performance evaluation of DSSCs. Natural dyes (organic dyes) has come to be a worth-while substitute to the rare and expensive inorganic sensitizers because of its cost effective, extreme availability and biodegradable. Different parts of a plant like fruits, leaves, flowers petals and bark have been tested over the years as sensitizers. The properties, together with some other parameters of these pigments give rise to improve in the operation standard of DSSCs. This review hash-out the history of DSSC with a focus on the recent developments of the natural dyes applications in this specific area with their overall appearance, the various components and the working principle of DSSCs as well as the work done over the years on natural dye based DSSCs.

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“…It has higher electron mobility than TiO 2 and lower recombination probability. ZnO based solar cells can be fabricated at low cost using environmentally friendly materials: ZnO and natural dye extraction from locally available fruits and flowers (Chang & Lo, 2010;Bhogaita et al, 2016;Gomez-Ortiz et al, 2010). However, ZnO based DSSCs with natural dyes show lower efficiency, intensive studies have been conducted to lower the cost of DSSCs to maintain the same efficiency of silicon-based solar cells.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Zinc Oxide Based Photoanode for Dye-sensitized Solar Cell using Delonix Regia Natural Dye Extract

et al. 2017

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As of late, research on the fabrication of natural dye-sensitized solar cells has been growing tremendously, largely due to its low cost and environmentally friendly nature. We have fabricated Zinc Oxide (ZnO) based Dye-sensitized Solar Cell (DSSC) using Delonix Regia, locally known as the Gulmohar flower natural dye extract. Zinc Oxide nanostructure films were allowed to grow on Fluorine-doped Tin Oxide (FTO) substrates via hydrothermal process. The seed layer for this was prepared by the spin coating method. The ZnO film's structure, topology, and optical properties were then studied using X-ray Diffraction (XRD), an Atomic Force Microscope (AFM) and an Ultraviolet Visible (UV-Vis) Spectrophotometer respectively. The X-ray results showed the hexagonal system structure of ZnO oriented along (101) planes. The effect of ethylene glycol on the structural property of ZnO film was also studied. The current voltage curve of DSSC showed the open circuit voltage and short circuit current of 360 mV and 80 µA respectively.

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Pomegranate leaves and mulberry fruit as natural sensitizers for dye-sensitized solar cells

Cited by 234 publications

References 26 publications

Celdas solares sensibilizadas con colorantes fotosensibles obtenidos de plantas de la región sur de Ecuador

Celdas solares sensibilizadas con colorantes fotosensibles obtenidos de plantas de la región sur de Ecuador

Review on Natural Dye-Sensitized Solar Cells (DSSCs)

Preparation and Characterization of Zinc Oxide Based Photoanode for Dye-sensitized Solar Cell using Delonix Regia Natural Dye Extract

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