scholarly journals Two Redox Couples are Better Than One: Improved Current and Fill Factor from Cobalt‐Based Electrolytes in Dye‐Sensitized Solar Cells

2014 ◽  
Vol 4 (8) ◽  
pp. 1301273 ◽  
Author(s):  
Jiayan Cong ◽  
Yan Hao ◽  
Licheng Sun ◽  
Lars Kloo
Keyword(s):  
Solar Cells ◽  
Fill Factor ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized ◽  
Redox Couples ◽  
Sensitized Solar Cells ◽  
Better Than

Improving the mass transport of copper-complex redox mediators in dye-sensitized solar cells by reducing the inter-electrode distance

2017 ◽  
Vol 19 (47) ◽  
pp. 32132-32142 ◽  
Author(s):  
Rodrigo García-Rodríguez ◽  
Roger Jiang ◽  
Esdras J. Canto-Aguilar ◽  
Gerko Oskam ◽  
Gerrit Boschloo
Keyword(s):  
Solar Cells ◽  
Mass Transport ◽  
Copper Complex ◽  
Fill Factor ◽  
Dye Sensitized Solar Cells ◽  
Redox Mediators ◽  
Dye Sensitized ◽  
Electrode Distance ◽  
Sensitized Solar Cells ◽  
Internal Transport

Reduction of inter-electrode distance in DSCs with copper-based electrolyte increases the photocurrent and fill factor by improving internal transport.

Correlating cobalt redox couples to photovoltage in the dye-sensitized solar cell

2018 ◽  
Vol 47 (34) ◽  
pp. 11942-11952 ◽  
Author(s):  
Kitty Y. Chen ◽  
Phil A. Schauer ◽  
Brian O. Patrick ◽  
Curtis P. Berlinguette
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Redox Potential ◽  
Linear Correlation ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized Solar Cell ◽  
Redox Mediators ◽  
Dye Sensitized ◽  
Redox Couples ◽  
Sensitized Solar Cells

Two sets of structurally analogous Co(iii/ii)-based redox mediators were incorporated in the dye-sensitized solar cells and a linear correlation was demonstrated between redox potential and photovoltage.

scholarly journals Comparative Study of Characteristics of Dye Sensitized Solar Cells Fabricated Using Substrates Coated with Fluorine Doped Tin Oxide and Titanium

2020 ◽  
Vol 15 (3) ◽  
pp. 216-221
Author(s):  
Arbin Maharjan
Keyword(s):  
Solar Cells ◽  
Tin Oxide ◽  
Fill Factor ◽  
Short Circuit ◽  
Dye Sensitized Solar Cells ◽  
Coated Glass ◽  
Cell Efficiency ◽  
Glass Substrates ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Dye-sensitized solar cells (DSSCs) have attracted many researchers because it has potential to supplement and compete with other solar cell technologies like Silicon (Si) and Cadmium Telluride (CdTe). The fabrication of DSSCs requires a photo electrode and a counter electrode of transparent and conducting nature. The commercial DSSCs uses electrodes of fluorine doped tin oxide (FTO) glass substrates. These electrodes are expensive and hence, possible alternative materials that are cheaper and that would provide better performance under similar environmental condition should be explored. In this paper, titanium (Ti)-coated glass substrates were prepared and then used to prepare electrodes for fabricating DSSCs. Similarly, DSSCs were fabricated using electrodes of conventional FTO-coated glass substrates. Performance characteristics like cell efficiency (η%), fill-factor (FF), short circuit current density (JSC) and open circuit voltage (VOC) of both fabricated DSSCs were obtained using their respective J-V characteristic curves under similar illumination of 100 mW/cm2 and with comparable transmittance under the visible transmission spectrum of 300-850 nm. The obtained results showed that DSSCs prepared using electrodes of FTO coated glass substrates have 1.557 times better cell efficiency and 2.172 times better fill factor than that of DSSCs fabricated using electrodes of Ti-coated glass substrates.

scholarly journals Lindqvist polyoxometalates as electrolytes in p-type dye sensitized solar cells

2019 ◽  
Vol 3 (1) ◽  
pp. 96-100 ◽  
Author(s):  
Tijmen M. A. Bakker ◽  
Simon Mathew ◽  
Joost N. H. Reek
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Open Circuit Voltage ◽  
Power Conversion ◽  
Dye Sensitized Solar Cells ◽  
Open Circuit ◽  
Dye Sensitized ◽  
Redox Couples ◽  
P Type ◽  
Sensitized Solar Cells

The development of new redox couples provides a clear strategy to improve power conversion efficiency (PCE) in p-type dye-sensitized solar cells (p-DSSCs) through enabling improvements in open-circuit voltage (VOC).

Tridentate cobalt complexes as alternative redox couples for high-efficiency dye-sensitized solar cells

2013 ◽  
Vol 4 (1) ◽  
pp. 454-459 ◽  
Author(s):  
Kais Ben Aribia ◽  
Thomas Moehl ◽  
Shaik M. Zakeeruddin ◽  
Michael Grätzel
Keyword(s):  
Solar Cells ◽  
High Efficiency ◽  
Dye Sensitized Solar Cells ◽  
Cobalt Complexes ◽  
Dye Sensitized ◽  
Redox Couples ◽  
Sensitized Solar Cells

Organic Redox Couples and Organic Counter Electrode for Efficient Organic Dye-Sensitized Solar Cells

2011 ◽  
Vol 133 (24) ◽  
pp. 9413-9422 ◽  
Author(s):  
Haining Tian ◽  
Ze Yu ◽  
Anders Hagfeldt ◽  
Lars Kloo ◽  
Licheng Sun
Keyword(s):  
Solar Cells ◽  
Counter Electrode ◽  
Dye Sensitized Solar Cells ◽  
Organic Dye ◽  
Dye Sensitized ◽  
Redox Couples ◽  
Sensitized Solar Cells

Effect of metal-doping in TiO2 on fill factor of dye-sensitized solar cells

2011 ◽  
Vol 99 (11) ◽  
pp. 113503 ◽  
Author(s):  
Xi Zhang ◽  
Shu-Tao Wang ◽  
Zhong-Sheng Wang
Keyword(s):  
Solar Cells ◽  
Fill Factor ◽  
Dye Sensitized Solar Cells ◽  
Metal Doping ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Dye-Sensitized Solar Cell Using Syzygium Cumini Fruit as Natural Dye Utilizing Titanium Dioxide

2015 ◽  
Vol 754-755 ◽  
pp. 1177-1181 ◽  
Author(s):  
Nor Azura Malini Ahmad Hambali ◽  
N. Roshidah Yusof ◽  
M. Norhafiz Hashim ◽  
Siti Salwa Mat Isa
Keyword(s):  
Titanium Dioxide ◽  
Solar Cells ◽  
Fill Factor ◽  
Dye Sensitized Solar Cells ◽  
Natural Dye ◽  
Syzygium Cumini ◽  
Dye Molecules ◽  
Dye Sensitized ◽  
Overall Performance ◽  
Sensitized Solar Cells

In this paper we present fabrication and experimental results to the field of dye-sensitized solar cells, more particularly relates to Syzygium cumini fruit dyes as sensitizers. A dyes molecule from Syzygium cumini fruit adsorbs to each particle of the titanium dioxide. A dyes molecules act as absorbance of the visible light. Simultaneously, titanium dioxide plays a role as griping and absorbs place for natural dye molecules. Thus, an important component for overall performance in term of efficiency for dye-sensitized solar cells is the photogeneration from the absorbed dye in titanium dioxide. The dye-sensitized solar cells fabricated with the extract of Syzygium cumini fruit dye produced fill factor of 0.317 and conversion efficiency of 2.0 %.

scholarly journals Fabrication of dye-sensitized solar cells using anthocyanidins from the extracts of Roselle (Hibiscus sabdariffa).

2015 ◽  
Vol 5 (1) ◽  
Author(s):  
I O Abdulsalami
Keyword(s):  
Solar Cells ◽  
Fill Factor ◽  
Dye Sensitized Solar Cells ◽  
Chemical Properties ◽  
Spectroscopic Studies ◽  
Hydroxyl Group ◽  
Dye Sensitized ◽  
Significant Difference ◽  
Ft Ir ◽  
Sensitized Solar Cells

This study extracted, purified and applied the extracts of H. sabdariffa as photo-sensitizers in dye-sensitized solar cells. The chemical properties of the extracts were examined using UV, FT-IR and GC-FID spectroscopic studies. The photoelectrochemical properties of the extracts were also reported. U-V spectra showed significant difference in the absorbance and wavelengths of the crude and purified samples of H. sabdariffa (HSE and HSP respectively). The former has characteristic absorptions of 1.096 at 330 nm and 0.211 at 540 nm, and the latter, 0.211 at 335 nm and 0.334 at 540 nm. Shifts in the wavelengths of the absorption (around 330 – 350 nm) and a characteristic decrease in the absorption between the HSE and HSP were observed. The FT-IR spectra of the HSE and HSP have similar characteristic absorbances peculiar to OH, C=O, C-C double bond (both aliphatic and aromatic) and C-O HSP has two additional absorbances at 2365 cm-1 and 2075cm-1. The spectra of the purified sample have bathochromic (red) shifts on the hydroxyl group and hypsochromic (blue) shifts on the benzene. The GC-FID chromatograms revealed the presence of six anthocyanidins and the spectra data showed the amount of the anthocyanidins in mg per 100 g of the sample. The results showed that delphinidin was in abundance, followed by cyanidin in both samples. The quantities of the delphinidin increased with purity of the samples, while the others decreased with purity for both samples. The photovoltaic performances of HSE and HSP have the fill factors of 0.254 and 0.347 and the overall efficiencies of 0.118% and 0.645% respectively. From these data, the purified sample has higher fill factor and efficiency than the unpurified extract.

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