scholarly journals Development of TiO2-based dye-sensitized solar cells using natural dyes extracted from some plant-based materials

2021 ◽  
Author(s):  
CI Chemistry International
Keyword(s):  
Solar Cells ◽  
Dye Sensitized Solar Cells ◽  
Open Circuit ◽  
Natural Dyes ◽  
Plant Parts ◽  
Dye Sensitized ◽  
Screening Assays ◽  
Soot Carbon ◽  
Sensitized Solar Cells ◽  
Open Circuit Voltages

The need for a green and more environmentally friendly energy production has led to recent research into the use of natural products in the production photovoltaic cells. In this study, TiO2-based dye-sensitized solar cells (DSSCs) were fabricated using photo-sensitizers made from ten natural dyes extracted from different plant parts (i.e. seeds, stalks, peels and flowers) of some selected plants and using candle soot carbon as a counter electrode. The chemical composition of the materials was determined using basic phytochemical screening assays. The extracted dye materials were characterized using UV and IR methods after which they were used in developing DSSCs. The DSSCs were then characterized under AM 1.5 illuminations to measure their photo-electrochemical properties. The dyes containing carboxyl and hydroxyl functional groups showed weak to large absorption under the visible light (400-700 nm) irradiation. The photo-electrochemical performance of the various cells gave an efficiency of as high as 0.18% with open circuit voltages ranging from 0.28 to 0.45 V and short-circuits photocurrent densities from 0.26 to 1.69 mA.cm-1. Better efficiencies can be attained by improving the DSSC constructional parameters.

High Open-Circuit Voltages: Evidence for a Sensitizer-Induced TiO2 Conduction Band Shift in Ru(II)-Dye Sensitized Solar Cells

2013 ◽  
Vol 25 (22) ◽  
pp. 4497-4502 ◽  
Author(s):  
Thomas Moehl ◽  
Hoi Nok Tsao ◽  
Kuan-Lin Wu ◽  
Hui-Chu Hsu ◽  
Yun Chi ◽  
...  
Keyword(s):  
Solar Cells ◽  
Conduction Band ◽  
Dye Sensitized Solar Cells ◽  
Open Circuit ◽  
Band Shift ◽  
Dye Sensitized ◽  
Sensitized Solar Cells ◽  
Open Circuit Voltages

Recent developments in sensitized mesoporous heterojunction solar cells

2001 ◽  
Vol 708 ◽  
Author(s):  
Jessica Krüger ◽  
Udo Bach ◽  
Robert Plass ◽  
Marco Piccerelli ◽  
Le Cevey ◽  
...  
Keyword(s):  
Solar Cells ◽  
Short Circuit ◽  
Dye Sensitized Solar Cells ◽  
Open Circuit ◽  
Heterojunction Solar Cells ◽  
Dye Sensitized ◽  
Dyeing Process ◽  
Recent Developments ◽  
Sensitized Solar Cells ◽  
Open Circuit Voltages

ABSTRACTThe performance of solid-state dye-sensitized solar cells based on spiro-MeOTAD (2,2'7,7'-tetrakis(N,N-di-p-methoxyphenyl-amine)-9,9'-spirobifluorene) was considerably improved by decreasing charge recombination across the interface of the heterojunction. This was achieved by blending the hole conductor matrix with a combination of 4-tert-butylpyridine (tBP) and Li[CF3SO2]2N. Open circuit voltages (Uoc) over 900mV and short circuit currents (Isc) up to 5.1 mA were obtained, yielding an overall efficiency of 2.56 % at AM1.5 illumination. Further improvement of the device performance was observed when conducting stripes of silver were deposited onto the devices as charge collector. The beneficial effect however could be assigned to the contamination of the dye-sensitized TiO2 film with silver during the dyeing process.

Two Novel Carbazole Dyes for Dye-Sensitized Solar Cells with Open-Circuit Voltages up to 1 V Based on Br−/Br3−Electrolytes

2009 ◽  
Vol 11 (23) ◽  
pp. 5542-5545 ◽  
Author(s):  
Chao Teng ◽  
Xichuan Yang ◽  
Chunze Yuan ◽  
Chaoyan Li ◽  
Ruikui Chen ◽  
...  
Keyword(s):  
Solar Cells ◽  
Dye Sensitized Solar Cells ◽  
Open Circuit ◽  
Dye Sensitized ◽  
Sensitized Solar Cells ◽  
Open Circuit Voltages

Natural dyes as sensitizers for dye-sensitized solar cells

2018 ◽  
Vol 11 (03) ◽  
pp. 1850051 ◽  
Author(s):  
Chu Qin ◽  
Dingyu Yang ◽  
Peng Gu ◽  
Xinghua Zhu ◽  
Hui Sun
Keyword(s):  
Solar Cells ◽  
Conversion Efficiency ◽  
Short Circuit ◽  
Dye Sensitized Solar Cells ◽  
Photocurrent Density ◽  
Open Circuit ◽  
Natural Dyes ◽  
Dye Sensitized ◽  
Bonding Performance ◽  
Sensitized Solar Cells

The dye-sensitized solar cells (DSSCs) have been fabricated by using a series of natural dyes extracted from euonymus japonicus and purple plants. The optical characteristics and chemical structure of dyes were investigated by UV-visible spectroscopy and Fourier infrared spectroscopy. It is found that the absorption of sunlight and bonding performance to TiO2 electrode of dyes had significantly effects on the conversion efficiency of solar cells. The results show the cells using blueberry as sensitizer achieved best conversion efficiency of 0.218%, attributed to its strong absorption and excellent bonding to the TiO2 electrode, correspondingly, the short-circuit photocurrent density ([Formula: see text] and open-circuit voltage ([Formula: see text] were 1.3[Formula: see text]mA/cm2 and 430[Formula: see text]mV, respectively.

Influence of Mg-doping in ZnO Photoanodes on their Characteristics in Dye-Sensitized Solar Cells

2021 ◽  
Author(s):  
Andreas Ringleb ◽  
Raffael Ruess ◽  
Nico Hofeditz ◽  
Wolfram Heimbrodt ◽  
Tsukasa Yoshida ◽  
...  
Keyword(s):  
Solar Cells ◽  
Dye Sensitized Solar Cells ◽  
Open Circuit ◽  
Mg Doping ◽  
Dye Sensitized ◽  
Sensitized Solar Cells ◽  
Open Circuit Voltages

Dye-sensitized solar cells (DSSCs) based on ZnO photoanodes have, despite extensive research, lacked behind cells based on TiO2, which is due to generally lower open-circuit voltages VOC and fill factors....

Application of new natural dyes extracted from Nasturtium flowers (Tropaeolum majus) as photosensitizer in dye-sensitized solar cells

Optik ◽  
2021 ◽  
pp. 167331
Author(s):  
Shalini Singh ◽  
Ishwar Chandra Maurya ◽  
Shubham Sharma ◽  
Shiva Prakash Singh Kushwaha ◽  
Pankaj Srivastava ◽  
...  
Keyword(s):  
Solar Cells ◽  
Dye Sensitized Solar Cells ◽  
Natural Dyes ◽  
Dye Sensitized ◽  
Tropaeolum Majus ◽  
Sensitized Solar Cells

Thiocyanate Free Ruthenium(II) Complexes for Dye Sensitized Solar Cells (DSSCs)

2018 ◽  
Vol 382 ◽  
pp. 369-373
Author(s):  
Usana Mahanitipong ◽  
Preeyapat Prompan ◽  
Rukkiat Jitchati
Keyword(s):  
Solar Cells ◽  
Short Circuit ◽  
Dye Sensitized Solar Cells ◽  
Visible Region ◽  
Photocurrent Density ◽  
Open Circuit ◽  
Dye Sensitized ◽  
Ligand Charge Transfer ◽  
Sensitized Solar Cells ◽  
Open Circuit Photovoltage

The four thiocyanate free ruthenium(II) complexes; [Ru(N^N)2(C^N)]PF6were synthesized and characterized for dye sensitized solar cells (DSSCs). The results showed that the broad absorptions covered the visible region from metal to ligand charge transfer (MLCT) were obtained with the main peaks at 560, 490 and 400 nm. The materials were studied DSSC performance under standard AM 1.5. Compound PP1 showed the power conversion efficiency (PCE) at 3.10%, with a short-circuit photocurrent density (Jsc) of 7.99 mA cm-2, an open-circuit photovoltage (Voc) of 563 mV and a high fill factor (ff) of 0.690.

IMPROVING STABILITY OF CHLOROPHYLL AS NATURAL DYE FOR DYE-SENSITIZED SOLAR CELLS

2017 ◽  
Vol 80 (1) ◽  
Author(s):  
Zainal Arifin ◽  
Sudjito Soeparman ◽  
Denny Widhiyanuriyawan ◽  
Suyitno Suyitno ◽  
Argatya Tara Setyaji
Keyword(s):  
Current Density ◽  
Open Circuit Voltage ◽  
Short Circuit ◽  
Dye Sensitized Solar Cells ◽  
Short Circuit Current ◽  
Short Circuit Current Density ◽  
Open Circuit ◽  
Natural Dyes ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Natural dyes have attracted much researcher’s attention due to their low-cost production, simple synthesis processes and high natural abundance. However the dye-sensitized solar cells (DSSCs) based natural dyes have higher tendency to degradation. This article reports on the enhancement of performance and stability of dye-sensitized solar cells (DSSCs) using natural dyes. The natural dyes were extracted from papaya leaves by ethanol solvent at a temperature of 50 °C. Then the extracted dyes were isolated and modified into Mg-chlorophyll using column chromatography. Mg-chlorophyll was then synthesized into Fe-chlorophyll to improve stability. The natural dyes were characterized using ultraviolet-visible spectrometry, Fourier transform infrared spectroscopy, and cyclic voltammetry. The performance of DSSCs was tested using a solar simulator. The results showed the open-circuit voltage, the short-circuit current density, and the efficiency of the extracted papaya leaves-based DSSCs to be 325 mV, 0.36 mA/cm2, and 0.07%, respectively. Furthermore, the DSSCs with purified chlorophyll provide high open-circuit voltage of 425 mV and short-circuit current density of 0.45 mA/cm2. The use of Fe-chlorophyll for sensitizing the DSSCs increases the efficiency up to 2.5 times and the stability up to two times. The DSSCs with Fe-chlorophyll dyes provide open-circuit voltage, short-circuit current density, and efficiency of 500 mV, 0.62 mA/cm2, and 0.16%, respectively. Further studies to improve the current density and stability of natural dye-based DSSCs along with an improvement in the anchor between dyes and semiconducting layers are required.

scholarly journals Natural Dyes: From Cotton Fabrics to Solar Cells

2021 ◽  
Author(s):  
Indriana Kartini ◽  
Adhi Dwi Hatmanto
Keyword(s):  
Solar Cells ◽  
Dye Sensitized Solar Cells ◽  
Cotton Fabrics ◽  
Natural Dye ◽  
Natural Dyes ◽  
Oxide Surface ◽  
Solar Cell Efficiency ◽  
Cell Efficiency ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

This article will discuss natural dyes’ role, from colouring the cotton fabrics with some functionality to harvesting sunlight in the dye-sensitized solar cells. Natural dye colourants are identical to the low light- and wash-fastness. Therefore, an approach to improving the colourant’s physical properties is necessary. Colouring steps employing silica nanosol and chitosan will be presented. The first part will be these multifunctional natural dye coatings on cotton fabrics. Then, functionality such as hydrophobic surfaces natural dyed cotton fabrics will be discussed. Natural dyes are also potential for electronic application, such as solar cells. So, the second part will present natural dyes as the photosensitizers for solar cells. The dyes are adsorbed on a semiconductor oxide surface, such as TiO2 as the photoanode. Electrochemical study to explore natural dyes’ potential as sensitizer will be discussed, for example, natural dyes for Batik. Ideas in improving solar cell efficiency will be discussed by altering the photoanode’s morphology. The ideas to couple the natural dyes with an organic–inorganic hybrid of perovskite and carbon dots are then envisaged.

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