Dye-sensitized solar cells using 20 natural dyes as sensitizers

Zhou, Hang; Wu, Liqiong; Gao, Yurong; Ma, Tingli

doi:10.1016/j.jphotochem.2011.02.008

Cited by 528 publications

(238 citation statements)

References 31 publications

Supporting

Mentioning

216

Contrasting

Unclassified

Order By: Relevance

“…Hasta ahora se han utilizado varios colorantes naturales como sensibilizadores en DSSCs. 8 Pero en la actualidad, son todavía demasiado ineficientes para ser vendidas de forma competitiva, se han encontrado rendimientos de colorantes menores al 1%. 9 Varios estudios han reportado la capacidad de captar energía solar que poseen los colorantes orgánicos que contienen antocianinas.…”

Section: Introductionunclassified

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

Cabrera¹,

Figueroa²,

Ramirez-Perez³

et al. 2016

Quim. Nova

View full text Add to dashboard Cite

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...

show abstract

Section: Introductionunclassified

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

Cabrera¹,

Figueroa²,

Ramirez-Perez³

et al. 2016

Quim. Nova

View full text Add to dashboard Cite

show abstract

“…Much work has been concentrated on organic dyes and organic metal co mp lexes. On the other hand, natural dyes extracted fro m fruits and flowers have attracted the attention of many researchers [14][15][16], and many natural dyes have been proven to be efficient dyes as photosensitizers in DSSCs.…”

Section: Introductionmentioning

confidence: 99%

Dye-Sensitized Solar Cells Based on ZnO Films and Natural Dyes

El-Agez¹,

Tayyan²,

Al-Kahlout³

et al. 2012

IJMC

View full text Add to dashboard Cite

This work emp loys extracts fro m Walnuts, Rhubarb, and Po megranate as natural dyes for fabricat ion of dye-sensitized solar cells (DSSCs). ZnO nanoparticles with crystallite mean value 12 n m as confirmed fro m XRD data have been synthesized at pH 12. SEM p icture of the ZnO powder reveals ho mogeneous and well defined nanoparticles with size of about 15 n m. TEM micrograph shows that the powder has a porous agglomerate structure consisting main ly of spherical crystalline particles with about 15-20 n m diameter. ZnO films were deposited on Fluorinated Tin Oxide (FTO) coated glass sheets followed by sintering at 450℃. The samples were sensitized by soaking in the dye solution. A Graphite slab was used as a back electrode, and redo x was employed as an electrolyte. Each cell was illu minated with light intensities in the range 40,000-100,000 Lux to measure the photovoltaic parameters. The experimental results shows that the highest I sc value is obtained fro m the DSSC sensitized with Rhubarb extract while the highest V oc value is obtained from the DSSC sensitized with the Walnuts extract. The P max of the DSSC sensitized by the Walnuts extract is greater than those sensitized by Rhubarb and Po megranate ext racts. Moreover, the open circuit voltage V oc decay was found to closely fo llo w a pseudo single exponential form.

show abstract

“…The performance of natural dye sensitizer in DSSC has been estimated using fill factor (FF), energy conversion efficiency (η) (J sc ), open circuit voltage (V oc ), and short circuit current. Many parts of a plant have been tested by Researchers (see Table 1) and various useful dyes have been highlighted as photo-sensitizers for DSSC from natural products [35][36][37][38][39][40][41][42]. …”

Section: Natural Dye Sensitizersmentioning

confidence: 99%

Review on Natural Dye-Sensitized Solar Cells (DSSCs)

Adedokun¹,

Titilope²,

Awodugba³

2016

IJET

View full text Add to dashboard Cite

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.

show abstract

Dye-sensitized solar cells using 20 natural dyes as sensitizers

Cited by 528 publications

References 31 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

Dye-Sensitized Solar Cells Based on ZnO Films and Natural Dyes

Review on Natural Dye-Sensitized Solar Cells (DSSCs)

Contact Info

Product

Resources

About