A Review on Current Status of Stability and Knowledge on Liquid Electrolyte-Based Dye-Sensitized Solar Cells

Sauvage, Frédéric

doi:10.1155/2014/939525

Cited by 38 publications

(28 citation statements)

References 175 publications

(172 reference statements)

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“…The performance of DSSCs relies on fundamental quantum properties like the lowest unoccupied molecular orbital (LUMO), the highest occupied molecular orbital (HOMO), and their distributions in the photosensitizers. Most significantly, the kinetics of the electron-transfer processes at the interface between the dye and the semiconductor as well the dye bound to the semiconductor surface and the hole-transporting substance 8 , 9 . Thus, it is imperative that the microscopic interfacial properties of organic metal-free dyes on TiO 2 photoanodes need to be thoroughly investigated.…”

Section: Introductionmentioning

confidence: 99%

Insight into the optoelectronic properties of designed solar cells efficient tetrahydroquinoline dye-sensitizers on TiO2(101) surface: first principles approach

Roy

Kar

Leszczyński

2018

Sci Rep

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Seven ‘lead’ dye-sensitizers from Tetrahydroquinoline (THQ) family were proposed and designed based on the structural attributes via quantitative-structure property relationship (QSPR) modeling. They were screened rationally through different computational approaches to explore their potential applications as photosensitizers for dye-sensitized solar cells (DSSCs). Compelling photophysical properties such as electron injection driving force, electron injection time, and dye regeneration were studied for the isolated dyes under the DFT and TD-DFT frameworks. Index of spatial extent (S, D, and ∆q), the strength of charge transfer and separation along with the charge transfer process is explored. First principle approach including van der Waals density functional calculation of dye@TiO2 interface indicates that all of the designed dyes have optimal interfacial behavior. Bader charge analysis, partial density of state (PDOS), charge density and electrostatic potential difference calculation confirms that THQ7 and THQ9 are the most efficient dye-sensitizers. The other five designed dyes also possess the required properties to emerge as effective dye-sensitizers potentially better than those already utilized.

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Section: Introductionmentioning

confidence: 99%

Insight into the optoelectronic properties of designed solar cells efficient tetrahydroquinoline dye-sensitizers on TiO2(101) surface: first principles approach

Roy

Kar

Leszczyński

2018

Sci Rep

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“…Organic solvents provide a phase for the dissolution and diffusion of ionic species, enabling ion transport through the electrolyte. Such solvents in DSSCs should have low cost, low toxicity, and low light absorption [113,114]. They should also be inert towards the dye and be of poor solubility to the sealant materials [112].…”

Section: Electrolytes For Dsscsmentioning

confidence: 99%

“…The intrusion of water and moisture are key factors that cause performance degradation in DSSCs [112,113,114]. However, interestingly, adding 20% water to a non-aqueous electrolyte has been shown to result in a 0.2% increase in conversion efficiency without losses in long-term stability [113].…”

Section: Electrolytes For Dsscsmentioning

confidence: 99%

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Progress on Electrolytes Development in Dye-Sensitized Solar Cells

et al. 2019

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Dye-sensitized solar cells (DSSCs) have been intensely researched for more than two decades. Electrolyte formulations are one of the bottlenecks to their successful commercialization, since these result in trade-offs between the photovoltaic performance and long-term performance stability. The corrosive nature of the redox shuttles in the electrolytes is an additional limitation for industrial-scale production of DSSCs, especially with low cost metallic electrodes. Numerous electrolyte formulations have been developed and tested in various DSSC configurations to address the aforementioned challenges. Here, we comprehensively review the progress on the development and application of electrolytes for DSSCs. We particularly focus on the improvements that have been made in different types of electrolytes, which result in enhanced photovoltaic performance and long-term device stability of DSSCs. Several recently introduced electrolyte materials are reviewed, and the role of electrolytes in different DSSC device designs is critically assessed. To sum up, we provide an overview of recent trends in research on electrolytes for DSSCs and highlight the advantages and limitations of recently reported novel electrolyte compositions for producing low-cost and industrially scalable solar cell technology.

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“…Various dyes and quantum dots exhibiting optical absorption at different energy ranges were explored to develop electrochemical solar cell technology with different electrolytes [6,7]. Various technical challenges including adsorption and stability of dyes onto electron acceptors, volatile, and corrosive nature of electrolytes are a few major hurdles in the progress roadmap of photo-electrochemical solar cell technology [8,9]. Quantum dots of CdTe, CdS, and CdSe are being used as major photo-absorbing candidates in excitonic solar cells with wide bandgap semiconductors as electron acceptors such as TiO 2 and ZnO [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

All spray pyrolysis-coated CdTe–TiO2 heterogeneous films for photo-electrochemical solar cells

Vijayaraghavan

Ashok

Gopakumar

et al. 2018

Mater Renew Sustain Energy

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Cadmium telluride (CdTe) thin films of different thicknesses deposited onto titanium dioxide (TiO 2 ) nanoparticle layer by spray pyrolysis deposition (SPD) are demonstrated as major photo-active semiconductor in photo-electrochemical solar cell configuration using iodide/triiodide (I − /I 3 − ) redox couple as a hole transport layer. The CdTe-TiO 2 heterogeneous films were characterized by X-ray photoelectron spectroscopy which identified doublet split of Cd 3d and Ti 2p which confirms CdTe and TiO 2 . Optical absorbance and transmittance of CdTe and TiO 2 films which were examined by UV-Vis spectroscopy confirm that the optical bandgap of CdTe is 1.5 eV with a dominant photo-absorption in the spectral window of 350-800 nm, while TiO 2 showed a bandgap of 3.1 eV and is optically transparent in the visible spectral window. The present work examined photo-anodes comprising 1, 3, 5, and 10 SPD cycles of CdTe coated on TiO 2 nanoparticle layer. The solar cell with 5 SPD cycles of CdTe resulting in 0.4% efficiency. Results can be articulated to the CdTe deposited by 5 SPD cycles provided an optimum surface coverage in the bulk of TiO 2, while the higher SPD cycles leads to agglomeration which blocks the porosity of the heterogeneous films.

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A Review on Current Status of Stability and Knowledge on Liquid Electrolyte-Based Dye-Sensitized Solar Cells

Cited by 38 publications

References 175 publications

Insight into the optoelectronic properties of designed solar cells efficient tetrahydroquinoline dye-sensitizers on TiO2(101) surface: first principles approach

Insight into the optoelectronic properties of designed solar cells efficient tetrahydroquinoline dye-sensitizers on TiO2(101) surface: first principles approach

Progress on Electrolytes Development in Dye-Sensitized Solar Cells

All spray pyrolysis-coated CdTe–TiO2 heterogeneous films for photo-electrochemical solar cells

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