Investigation on influence of thickness variation effect of TiO2 film, spacer and counter electrode for improved dye-sensitized solar cells performance

Abdel-Galeil, Mohamed M.; Kumar, Rajesh; Matsuda, Atsunori; El-Shater, R.

doi:10.1016/j.ijleo.2020.166108

Cited by 16 publications

(9 citation statements)

References 44 publications

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“…The lower performance is a result of increased distance between the electrodes leading to diffusion limitations and, as a result, increased recombination at the semiconductor-gel interface due to the accumulation of oxidized species at the photoanode, in line with what was previously reported. [34,38] Furthermore, the gel increases cell resistance due to low ion diffusion that leads to a lower Fill Factor (FF). The combined effects contribute to a decrease in η for the 3 mm gel DSSC compared to the liquid 0.060 mm analog (by 70 %).…”

Section: Methodsmentioning

confidence: 99%

Aqueous Biphasic Dye‐Sensitized Photosynthesis Cells for TEMPO‐Based Oxidation of Glycerol

et al. 2022

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This work reports an aqueous dye‐sensitized photoelectrochemical cell (DSPEC) capable of oxidizing glycerol (an archetypical biobased compound) coupled with H2 production. We employed a mesoporous TiO2 photoanode sensitized with the high potential thienopyrroledione‐based dye AP11, encased in an acetonitrile‐based redox‐gel that protects the photoanode from degradation by aqueous electrolytes. The use of the gel creates a biphasic system with an interface at the organic (gel) electrode and aqueous anolyte. Embedded in the acetonitrile gel is 2,2,6,6‐tetramethylpiperidine‐1‐oxyl (TEMPO), acting as both a redox‐mediator and a catalyst for oxidative transformations. Upon oxidation of TEMPO by the photoexcited dye, the in situ generated TEMPO+ shuttles through the gel to the acetonitrile–aqueous interface, where it acts as an oxidant for the selective conversion of glycerol to glyceraldehyde. The introduction of the redox‐gel layer affords a 10‐fold increase in the conversion of glycerol compared to the purely aqueous system. Our redox‐gel protected photoanode yielded a stable photocurrent over 48 hours of continuous operation, demonstrating that this DSPEC is compatible with alkaline aqueous reactions.

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Section: Methodsmentioning

confidence: 99%

Aqueous Biphasic Dye‐Sensitized Photosynthesis Cells for TEMPO‐Based Oxidation of Glycerol

et al. 2022

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Section: Introductionmentioning

confidence: 99%

“…26 Recently, Kumar et al reported that the influence of the thickness variation effect of the TiO 2 film, prepared by the surfactant-assisted template synthesis method for improved DSSC efficiency. 27 Photocurrent responsiveness and catalytic efficacies are influenced by the nature of cations, crystal shape and size, and surface area. These entities can be tailored by synthesis methods.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Enhanced performance in perovskite solar cells through Ta, the Nb-doped TiO 2 blocking layer is reported by Song et al Moreover, Wei et al reported that the greater performance of the DSSC while using RGO/TiO 2 as a blocking layer . Recently, Kumar et al reported that the influence of the thickness variation effect of the TiO 2 film, prepared by the surfactant-assisted template synthesis method for improved DSSC efficiency …”

Section: Introductionmentioning

confidence: 99%

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Tuning of Structural and Magnetic Properties of SrSnO₃ Nanorods in Fabrication of Blocking Layers for Enhanced Performance of Dye-Sensitized Solar Cells

2022

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Perovskite-based SrSnO 3 nanostructures doped with indium are prepared via a facile chemical precipitation method. Prepared nanostructures are used to assemble the dye-sensitized solar cells (DSSCs), and their photovoltaic response and electrochemical impedance spectra are measured. The synthesized samples are subjected to structural, morphological, optical, and magnetic properties. The X-ray diffraction pattern confirms the single-phase orthorhombic (Pbnm) perovskite structure. Local structural and phonon mode variations are examined by Raman spectra. Electron micrographs disclose the nanorods. The elements (Sr, Sn, O, and In) and the existence of oxygen vacancies are identified by X-ray photoelectron spectroscopy analysis. Surface area analysis demonstrates the higher surface area (11.8 m 2 /g) for SrSnO 3 nanostructures. Optical absorption spectra confirm the good optical behavior in the ultraviolet region. The multicolor emission affirms the presence of defects/vacancies present in the synthesized samples. The appearance of interesting ferromagnetic behavior in the prepared samples is due to the presence of F-center exchange interactions. Under the irradiation (1000 W/m 2 ) of simulated sunlight, the DSSC fabricated by 3% In-doped SrSnO 3 exhibits the highest η of 5.68%. Hence, the blocking layers prepared with pure and indium-doped samples could be the potential candidates for DSSC applications.

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“…A dye can be adsorbed on a TiO2 layer in a DSSC [6]. TiO2 is coated on a conductive glass [7][8][9]. A redox couple is needed to operate a DSSC, and the most common redox couple for DSSCs is I 3-/I - [10]- [12].…”

Section: Introductionmentioning

confidence: 99%

Ionic Liquids Based Cocktails as a Composite Redox Electrolyte for Natural Dye-Sensitized Solar Cells

Mudzakir¹,

Nandiyanto²,

Munawaroh³

et al. 2022

Int. J. Adv. Sci. Eng. Inf. Technol.

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Fatty-imidazolinium electrolytes, waste graphite dispersed composite electrolytes like cocktails (1,3-methyl octyl-1,2,3benzotiazolium acetate-cis-oleyl-imidazolinium iodide), and graphite exfoliation using cis-oleyl-imidazolinium acetate have been studied to enhance the efficiency of a newly developing dye-sensitized solar cells (DSSCs). The DSSCs were fabricated in a sandwich structure and characterized using Solar Simulator. The graphite exfoliation was conducted by sonication and microwave energy, as well as the electrochemical method. Cis-oleyl-imidazolinium iodide efficiency (0.53%) was highest than stearyl-imidazolinium iodide and palmityl-imidazolinium iodide because cis-oleyl-imidazolinium iodide has a double bond and the longest alkyl chain which triggered a self-assembly structure formation and increased the rate of I -/I 3transport in cells. Then, the efficiency of DSSCs-based composite electrolytes was in the range of 0.020-0.203%. Dispersion of 0.05% of the graphite results in efficiency enhancement of about 100%, but the greater fraction (0.10%) of the graphite causes a poor performance (lower efficiency), possibly due to interference of the internal electron transportation routes in the DSSC by insoluble graphite. After exfoliation, the conductivity of synthetic graphite (11.58 x 10 -1 S/cm), new battery graphite (9.32 x 10 -1 S/cm), and battery waste graphite (7.96 x 10 -1 S/cm) were increased respectively 10 times, 2 times, and 4 times from the graphite before exfoliation due to changes in crystallinity, the distance between layers, crystal size, formation of multilayer graphene, and the occurrence of π to π* transition. This enhancement of solar conversion efficiency can give a new contribution to the development of DSSC.

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Investigation on influence of thickness variation effect of TiO2 film, spacer and counter electrode for improved dye-sensitized solar cells performance

Cited by 16 publications

References 44 publications

Aqueous Biphasic Dye‐Sensitized Photosynthesis Cells for TEMPO‐Based Oxidation of Glycerol

Aqueous Biphasic Dye‐Sensitized Photosynthesis Cells for TEMPO‐Based Oxidation of Glycerol

Tuning of Structural and Magnetic Properties of SrSnO₃ Nanorods in Fabrication of Blocking Layers for Enhanced Performance of Dye-Sensitized Solar Cells

Ionic Liquids Based Cocktails as a Composite Redox Electrolyte for Natural Dye-Sensitized Solar Cells

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Investigation on influence of thickness variation effect of TiO2 film, spacer and counter electrode for improved dye-sensitized solar cells performance

Cited by 16 publications

References 44 publications

Aqueous Biphasic Dye‐Sensitized Photosynthesis Cells for TEMPO‐Based Oxidation of Glycerol

Aqueous Biphasic Dye‐Sensitized Photosynthesis Cells for TEMPO‐Based Oxidation of Glycerol

Tuning of Structural and Magnetic Properties of SrSnO3 Nanorods in Fabrication of Blocking Layers for Enhanced Performance of Dye-Sensitized Solar Cells

Ionic Liquids Based Cocktails as a Composite Redox Electrolyte for Natural Dye-Sensitized Solar Cells

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Tuning of Structural and Magnetic Properties of SrSnO₃ Nanorods in Fabrication of Blocking Layers for Enhanced Performance of Dye-Sensitized Solar Cells