Synthesis of improved dye-sensitized solar cell for renewable energy power generation

Ikpesu, Jasper Ejovwokoghene; Iyuke, Sunny E.; Daramola, Michael O.; Okewale, Akindele

doi:10.1016/j.solener.2020.05.002

Cited by 65 publications

(14 citation statements)

References 124 publications

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“…In a DSSC, there is a kinetic competition between the electrons transported through the semiconductor layer and the ones which recombine with the electrolyte pair. To increase the photocurrent density, the movement of electrons to go through the ZnO semiconductor must be faster than the recombination reaction, in an order of milliseconds, otherwise, the photocurrent drops significantly, reducing the efficiency of the cell [30]. A pathway must be created from the photoinduced charge carriers to the current collector to minimize the recombination in the ZnO-dye and the electrolyte-dye interfaces [16].…”

Section: Resultsmentioning

confidence: 99%

Study of electrophoretic deposition of ZnO photoanodes on fluorine-doped tin oxide (FTO) glass for dye-sensitized solar cells (DSSCs)

et al. 2022

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Semiconductors, such as zinc oxide (ZnO), are used in different scientific fields, including energy. This study applied ZnO thin films on a photovoltaic cell, specifically a dye-sensitized solar cell (DSSC). ZnO was used in solar cells due to its characteristics such as electronic mobility. Electrophoretic deposition (EPD) is an efficient method to deposit thin films since it can be done at room temperature and its parameters can be easily controlled. ZnO thin films were deposited on fluorine-doped tin oxide (FTO) glass, changing the tension parameter, and used in a DSSC, with different dye immersion times, between 7 and 24 h, to observe time effects on cell efficiency. For lower tension, 30 and 40 V, 7 h improved the cell efficiency, and at 50 V, 24 h favored the current density and efficiency. The highest efficiency was for the photoanode EPD deposited at 50 V, for 24 h dye immersion, at about 2.68%, and photocurrent of 13.55 mA/cm 2 .

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Section: Resultsmentioning

confidence: 99%

Study of electrophoretic deposition of ZnO photoanodes on fluorine-doped tin oxide (FTO) glass for dye-sensitized solar cells (DSSCs)

et al. 2022

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“…[5][6][7] The fundamental operational mechanism of DSSCs comes from the photovoltaic phenomenon, wherein photosensitizing dyes absorb energy from photons and further emit electrons that are transported through an electron transport electrode. [8][9][10] To achieve optimal efficiency, it is imperative for electron transport electrode (photoanode) materials to full the needs of possessing good dye absorption characteristics and possessing an acceptable band-gap energy. Therefore, the utilization of TiO 2 is likely to be given preference in the production of electron transport electrodes for DSSCs due to its notable characteristics such as its expansive surface area, porosity, and capacity to scatter light.…”

Section: Introductionmentioning

confidence: 99%

The impact of a TiO₂/r-GO composite material on the performance of electron transport electrodes of dye sensitized solar cells

Pervaiz,

Shahzad,

Jamil

2024

RSC Adv.

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“…The molecule's electronic properties greatly influence the factors that govern the efficiency of dye sensitizers, such as charge transport, photo-excitation, and electron injection. Thus, it is necessary to have a fundamental understanding of the electronic structures of the dye molecule to understand the charge separation and electron transfer separation mechanism [48,49].…”

Section: Introductionmentioning

confidence: 99%

Insights from Density Functional Theory on the Feasibility of Modified Reactive Dyes as Dye Sensitizers in Dye-Sensitized Solar Cell Applications

Dindorkar¹,

Yadav

2022

Solar

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Recently, reactive dyes have attracted a lot of attention for dye-sensitized solar cell applications. This study endeavors to design dye sensitizers with enhanced efficiency for photovoltaic cells by modifying the reactive blue 5 (RB 5) and reactive brown 10 (RB 10) dyes. Three different strategies were used to design the sensitizers, and their efficiency was compared using the density functional theory (DFT). The optimized geometry, bang gap values, the density of states, electrostatic potential surface analysis, and theoretical FT-IR absorption spectra of the sensitizers were obtained. In the first strategy, functional groups (electron-donating (C2H5), electron-withdrawing (–NO2) groups) were anchored onto dye molecules, and their effect on the charge transport properties was evaluated using the DFT analysis. The latter two designs were based on a donor-π-acceptor strategy. The second design consisted of intramolecular donor-acceptor regions separated by a benzodithiophene-based π-spacer. In the third strategy, an external acceptor unit was attached to the dye molecules through the benzodithiophene-based π-spacer. The electron-donating strengths of donor moieties in the donor-π-acceptor systems were studied using B3LYP/6-31G level DFT calculations. The quantum chemical analysis of the three designs revealed that the anchoring of functional groups (–NO2 and C2H5) on the dye molecules showed no impact on the charge transport properties. The introduction of a benzodithiophene-based π-spacer improved the conjugation of the dye sensitizers, which enhanced the electron transport properties. The electron transport properties further improved when an external acceptor unit was attached to the dye molecule containing a π-spacer. It was thus concluded that attaching an external acceptor unit to the donor dye molecule containing a π-spacer produced desired results for both of the dyes.

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Synthesis of improved dye-sensitized solar cell for renewable energy power generation

Cited by 65 publications

References 124 publications

Study of electrophoretic deposition of ZnO photoanodes on fluorine-doped tin oxide (FTO) glass for dye-sensitized solar cells (DSSCs)

Study of electrophoretic deposition of ZnO photoanodes on fluorine-doped tin oxide (FTO) glass for dye-sensitized solar cells (DSSCs)

The impact of a TiO₂/r-GO composite material on the performance of electron transport electrodes of dye sensitized solar cells

Insights from Density Functional Theory on the Feasibility of Modified Reactive Dyes as Dye Sensitizers in Dye-Sensitized Solar Cell Applications

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Synthesis of improved dye-sensitized solar cell for renewable energy power generation

Cited by 65 publications

References 124 publications

Study of electrophoretic deposition of ZnO photoanodes on fluorine-doped tin oxide (FTO) glass for dye-sensitized solar cells (DSSCs)

Study of electrophoretic deposition of ZnO photoanodes on fluorine-doped tin oxide (FTO) glass for dye-sensitized solar cells (DSSCs)

The impact of a TiO2/r-GO composite material on the performance of electron transport electrodes of dye sensitized solar cells

Insights from Density Functional Theory on the Feasibility of Modified Reactive Dyes as Dye Sensitizers in Dye-Sensitized Solar Cell Applications

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The impact of a TiO₂/r-GO composite material on the performance of electron transport electrodes of dye sensitized solar cells