Improvement of the Performance of Purple Carrot Sensitized Solar Cells by Acidic Treatment of FTO Glass Substrate and TiO<sub>2</sub>Film

Radwan, I. M.; Taya, Sofyan A.; El-Agez, Taher M.; Abdel-Latif, Monzir S.; Ghamri, Hatem

doi:10.12693/aphyspola.130.795

Cited by 11 publications

(5 citation statements)

References 15 publications

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“…Batniji et al worked on Trigonella used as sensitizers in DSSCs and achieved 0.215% efficiency . Radwan et al found 0.81% efficiency for DSSCs based on natural purple carrot . Taya et al employed natural dyes of Safflower, Medicago sativa , and Ros marinus and reached 0.115% efficiency…”

Section: Introductionmentioning

confidence: 99%

“…21 Radwan et al found 0.81% efficiency for DSSCs based on natural purple carrot. 22 Taya et al employed natural dyes of Safflower, Medicago sativa, and Ros marinus and reached 0.115% efficiency. 23 In this study, three different DSSCs with varying natural sensitizers yellow jasmine berry, madder berry, and St. Lucie cherry fruits were fabricated.…”

Section: Introductionmentioning

confidence: 99%

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St. Lucie cherry, yellow jasmine, and madder berries as novel natural sensitizers for dye‐sensitized solar cells

et al. 2019

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Summary Natural dyes extracted from fruits, vegetables, flowers, and leaves are considered as promising alternative sensitizers to replace synthetic dyes for dye‐sensitized solar cells (DSSCs). Generally, solar activity of natural dyes stem from anthocyanin pigment. Carbonyl, carboxyl, and hydroxyl groups present in the anthocyanin molecule improve the adsorption ability of dye on TiO2 and therefore facilitate charge transfer. Here, for the first time, novel natural dyes extracted from St. Lucie cherry, yellow jasmine, and madder berries are reported to act as sensitizer in DSSCs. These novel natural dye extracts are prepared by dissolving related fruits in ethanol. The ingredient of the dyes is identified by FT‐IR spectroscopy. Accordingly, FT‐IR spectrum reveals that novel natural dye extracts exhibit all the characteristic peaks of anthocyanin pigment. Specifically, St. Lucie cherry consists of more distinct carbonyl group than other sources. Also, photoanodes composed of three TiO2 layers are prepared by using a spin‐coating method. Then, they are immersed into natural dyes and analyzed by conducting UV‐Vis spectroscopy. Compared with bare TiO2, natural dye–loaded photoanodes demonstrate far higher absorption ability in the visible region. After fabrication of devices with different novel natural dye sensitizers, current‐voltage characteristics and electrochemical impedance spectroscopy measurements are performed. The best power conversion efficiency (PCE) of 0.19% is obtained by sensitization of St. Lucie cherry with an open‐circuit voltage (Voc) of 0.56 V, short‐circuit current density (Jsc) of 181 μA cm−2, and fill factor (FF) of 0.55. Furthermore, St. Lucie cherry–sensitized devices show the lowest charge transfer and highest recombination resistances. This result can be attributed to the obvious carbonyl group exhibited by St. Lucie cherry.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

St. Lucie cherry, yellow jasmine, and madder berries as novel natural sensitizers for dye‐sensitized solar cells

et al. 2019

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“…The FTO glasses rinsed with DI water were then heat treated [61] on a hot plate for 10 min at 125 • C for drying, then at 450 • C for 30 min. The TiO 2 paste was ground in a mortar for at least 30 min by adding it into 7 gr TiO 2 nano-powder (Aeroxide TiO 2 P25, 20-25 nm particle size) in HNO 3 [62][63][64] aqueous solution 1.5M in 1 mL increments while it was ground for the mechanical separation of the aggregated TiO 2 particles until a uniform paste was achieved. The uniform paste was put in an ultrasonic bath for 5 min to breakdown any agglomerates of TiO 2 nanoparticles that were not broken up.…”

Section: Materials and Fabrication Methodsmentioning

confidence: 99%

A New Type of Architecture of Dye-Sensitized Solar Cells as an Alternative Pathway to Outdoor Photovoltaics

et al. 2022

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The current investigation shows a possible new pathway for more efficient and cost-effective energy-harvesting photovoltaic devices. Our approach could permit all emerging technologies that are currently used for indoors and smart buildings to go a step forward and could be used for outdoor applications. The investigated architecture is a very promising geometry especially for Dye-Sensitized Solar Cells (DSSCs). It turns their main drawback, the lowering of their efficiency and lifetime when operating at high solar irradiation density, into an asset by increasing the total active area per horizontal unit area for light harvesting, while preserving the active elements from degradation and extending durable lifetime. The investigated architecture is based on a symmetric “U” type geometry, which is constructed by a highly reflective material on the inner surface. Solar irradiation is reflected internally at the bottom of the construction and splits towards two opposite sided solar cells; the two cells form a cavity where the solar light multiplies and is successively absorbed. Consequently, the vertically incoming irradiation is reduced when reaching the vertical internal sides on which the DSSCs are mounted. Thus, the solar cells operate at low light intensities, which provide significant lifetime extension and efficiency enhancement. Interestingly, the electrical energy per effective surface unit, which is produced by the two vertical DSSCs, is at least equal to that of a standalone, vertically irradiated cell. The advantage of the new architecture is that protects DSSCs from their degradation and deterioration, although the entire system operates under high illumination. This makes the cells more efficient outdoors, with a comparable performance to indoor conditions.

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“…Obviously, synthetic dyes have higher sensitization activity and stability than natural dyes [10,14]. The natural dyes used as sensitizers in DSSCs provide very low efficiencies because of the absence of specific functional attachment groups and low absorption in the visible region of the solar spectrum [54][55][56][57][58]. Zhang et al [59] synthesized three synthetic dyes and studied them by using a TiO 2 photoanode and observed efficiencies as high as 7.6 %, which are higher than those of natural dyes.…”

Section: Photoelectrochemical Characteristics Of Zno Dsscsmentioning

confidence: 99%

Experimental and theoretical study of 1, 4-naphthoquinone based dye in dye-sensitized solar cells using ZnO photoanode

Shinde

Tambade

Pathan

et al. 2017

Materials Science-Poland

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A dye-sensitized solar cell (DSSC) was assembled using a dye 4-(3-chloro-1, 4-dioxo-1, 4-dihydronaphthalen-2-ylamino) benzoic acid with ZnO as a photoanode. It was synthesized using 2, 3-dichloro 1, 4-naphthoquinone and p-amino benzoic acid. The spectral features of the dye were analyzed in ethanol using experimental and computational methods. The theoretical investigations revealed that the synthesized dye may act as a sensitizer in DSSCs. The photoelectrochemical performance was tested under direct sunlight using a sandwich type DSSC. The photovoltaic data of the dye adsorbed on ZnO films indicated thepower conversion efficiency of 1.07 % under sunlight with a light intensity of 39 mW·cm-2.

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Improvement of the Performance of Purple Carrot Sensitized Solar Cells by Acidic Treatment of FTO Glass Substrate and TiO₂Film

Cited by 11 publications

References 15 publications

St. Lucie cherry, yellow jasmine, and madder berries as novel natural sensitizers for dye‐sensitized solar cells

St. Lucie cherry, yellow jasmine, and madder berries as novel natural sensitizers for dye‐sensitized solar cells

A New Type of Architecture of Dye-Sensitized Solar Cells as an Alternative Pathway to Outdoor Photovoltaics

Experimental and theoretical study of 1, 4-naphthoquinone based dye in dye-sensitized solar cells using ZnO photoanode

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Improvement of the Performance of Purple Carrot Sensitized Solar Cells by Acidic Treatment of FTO Glass Substrate and TiO2Film

Cited by 11 publications

References 15 publications

St. Lucie cherry, yellow jasmine, and madder berries as novel natural sensitizers for dye‐sensitized solar cells

St. Lucie cherry, yellow jasmine, and madder berries as novel natural sensitizers for dye‐sensitized solar cells

A New Type of Architecture of Dye-Sensitized Solar Cells as an Alternative Pathway to Outdoor Photovoltaics

Experimental and theoretical study of 1, 4-naphthoquinone based dye in dye-sensitized solar cells using ZnO photoanode

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Improvement of the Performance of Purple Carrot Sensitized Solar Cells by Acidic Treatment of FTO Glass Substrate and TiO₂Film