Investigation of some common Fijian flower dyes as photosensi-tizers for dye sensitized solar cellsabstract

Narayan, Monishka Rita; Raturi, Atul K.

doi:10.3103/s0003701x11020149

Cited by 45 publications

(18 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Improved charge transfer leading to higher efficiencies can be accomplished with enhanced interaction between TiO 2 and dye molecules. [25]. Also acid pretreatment of the TiO 2 film can cause a shift in the conduction band of TiO 2 to a more positive potential that helps in reducing the recombination of electrons.…”

Section: Improvement Of Stability and Efficiency Of Dsscmentioning

confidence: 98%

“…This flavonoid gets rapidly adsorbed to the surface of TiO 2 by displacing an OH À counter ion from the Ti(IV) site that combines with a proton which is donated by the flavonoid [19,25].…”

Section: Flavonoidsmentioning

confidence: 99%

“…Similarly, few authors have discussed in detail only on the stability [8,19,[20][21][22][23][24][25][26][27], future prospects [15,28], and on the applications and future of DSSC based on natural dyes [8,[28][29][30][31][32][33][34].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Review on natural dye sensitized solar cells: Operation, materials and methods

Shalini

Prabhu

Prasanna

et al. 2015

Renewable and Sustainable Energy Reviews

270

132

View full text Add to dashboard Cite

Section: Improvement Of Stability and Efficiency Of Dsscmentioning

confidence: 98%

“…This flavonoid gets rapidly adsorbed to the surface of TiO 2 by displacing an OH À counter ion from the Ti(IV) site that combines with a proton which is donated by the flavonoid [19,25].…”

Section: Flavonoidsmentioning

confidence: 99%

See 1 more Smart Citation

Review on natural dye sensitized solar cells: Operation, materials and methods

Shalini

Prabhu

Prasanna

et al. 2015

Renewable and Sustainable Energy Reviews

270

132

View full text Add to dashboard Cite

“…The extract of betalain dyes from bougainvillea and beet root has been used by Narayan and Sandquist to construct DSSCs. The device exhibited an efficiency of 0.38 and 2.7 % for bougainvillea and beet root extract, respectively [38,39].…”

Section: Current-voltage Characteristicsmentioning

confidence: 99%

Betalain and anthocyanin dye-sensitized solar cells

Ramamoorthy

Radha²,

Maheswari³

et al. 2016

J Appl Electrochem

102

View full text Add to dashboard Cite

In the present work, the mechanism behind the functioning of the eco-friendly dye-sensitized solar cell was explored. Dye-sensitized solar cells were fabricated using natural dyes extracted from common pear (Opuntia dillenii) and red tamarind (Tamarindus indica), and 1:1 mixture. Betalain and anthocyanin were identified as the main pigments that sensitize the semiconductor TiO 2 film. The best conversion efficiency of 0.47 % was achieved from betalain dyes and 0.14 % from anthocyanin dyesensitized solar cell [under standard Air Mass 1.5 illumination (85 mW cm -2 )]. The mixture of dye (1:1 mixture) adsorbed onto TiO 2 exhibited an efficiency of 0.20 %. The light absorption behavior of extracted dyes was studied using ultraviolet-visible analysis. The influence of the binding nature of the dyes with TiO 2 surface on the efficiency of the solar cells was analyzed through Fourier transform infra-red analysis. The electrochemical impedance spectroscopy was used to find out the internal charge transfer resistance of the cells. The device incident photonto-current efficiency was obtained from 5 to 25 % for different natural dyes and found to coincide with the photocurrent-voltage characteristics and electrochemical impedance spectroscopy analysis. Graphical Abstract

show abstract

“…Introduction of a functional group and optimization of the dye structure is necessary to improve the efficiency of DSSC . The controlling of the temperature of dye extraction is important in determining the charge‐transfer effectiveness of natural dye and thus has a direct impact on the conversion efficiency of DSSC . Dye aggregation becomes a serious issue that reduces the efficiency of the DSSC. This problem can be avoided by incorporating long alkyl chains and aromatic groups into the dye structure . Improved charge transfer leading to higher efficiencies can be accomplished with enhanced interaction between TiO 2 and dye molecules . Absorption coefficient of the photosensitizer and the light scattering effect of the semiconductor film improves the IPCE performance in the long wavelength region. Improving the open circuit voltage is also important for realization of higher efficiencies .…”

Section: Recommendations For the Improvement Of Sensitizer Stability mentioning

confidence: 99%

Status and outlook of sensitizers/dyes used in dye sensitized solar cells (DSSC): a review

Shalini

Balasundaraprabhu

Kumar

et al. 2016

Int. J. Energy Res.

200

103

View full text Add to dashboard Cite

SUMMARYDye-sensitized solar cells (DSSCs) have become a topic of significant research in the last two decades because of their scientific importance in the area of energy conversion. Currently, DSSC is using inorganic ruthenium (Ru)-based, metal-free organic dyes, quantum-dot sensitizer, perovskite-based sensitizer, and natural dyes as sensitizer. The use of metal-free, quantum-dot sensitizer, perovskite-based sensitizer, and natural dyes has become a viable alternative to expensive and rare Ru-based dyes because of low cost, ease of preparation, easy attainability, and environmental friendliness. Most of the alternatives to Ru-based dyes have so far proved inferior to the Ru-based dyes because of their narrow absorption bands (Δλ ≈ 100-250 nm), adverse dye aggregation, and instability. This review highlights the recent research on sensitizers for DSSC, including ruthenium complexes, metal-free organic dyes, quantum-dot sensitizer, perovskite-based sensitizer, mordant dyes, and natural dyes. It also details and tabulates all types of sensitizer with their corresponding efficiencies. Plot of progress in efficiency (η) of DSSC till date based on different types of sensitizers is also presented.

show abstract

Investigation of some common Fijian flower dyes as photosensi-tizers for dye sensitized solar cellsabstract

Cited by 45 publications

References 15 publications

Review on natural dye sensitized solar cells: Operation, materials and methods

Review on natural dye sensitized solar cells: Operation, materials and methods

Betalain and anthocyanin dye-sensitized solar cells

Status and outlook of sensitizers/dyes used in dye sensitized solar cells (DSSC): a review

Contact Info

Product

Resources

About