Nanostructured Dye Sensitized Solar Cells with Different Counter Electrodes

Karim, Fahim; Sikder, Ahmed; Ghann, William; Green, Kara; Ozturk, Birol; Ali, Meser M.; Uddin, Jamal

doi:10.11648/j.ajpc.20200901.11

Cited by 5 publications

(2 citation statements)

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“…A mixture of 0.5 M 1‐butyl‐3‐methyl imidazolium iodide, 0.06 M iodine, and 0.1 M lithium iodide in acetonitrile was employed as electrolyte. The counter electrodes were prepared by placing an FTO plate over the candlelight to obtain a uniform carbon soot film [30] . Thin transparent adhesive double‐sided tape (70–80 μ m) was used as a spacer to fill the electrolyte and avoid shorting the electrodes.…”

Section: Methodsmentioning

confidence: 99%

Ruthenium (II) Complexes Bearing Heteroleptic Terpyridine Ligands: Synthesis, Photophysics and Solar Energy Conversion

et al. 2021

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Heteroleptic ruthenium (II) complexes featuring donor functionalized phenyl‐terpyridine (ph‐tpy) and a monocarboxylic‐(ph‐tpy)/(tpy) are synthesized and characterized. Reactions of ruthenium (II) precursors at 80 °C favored heteroleptic complexes formation over the homoleptic side products. Visible light excitation of these complexes resulted in the metal‐to‐ligand charge transfer (MLCT) transitions. The inter‐planar torsional angle between the atoms of donor functionalized phenyl ring and the central pyridine (py) of the tpy core strongly influences visible light absorption and photovoltaic properties. The lower inter‐ring py‐ph torsion in the acceptor end of the MLCT structures and its increase in the oxidized doublets could prevent the back electron transfer. The ruthenium atom and the acceptor functionalized tpy host the triplet‐MLCT spin density. Ambient temperature excited‐state decay followed the energy gap law and occurred in the order of a few nanoseconds. Herein, we evaluate the photosensitizing ability of these complexes via a combined experimental and computational approach.

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Section: Methodsmentioning

confidence: 99%

Ruthenium (II) Complexes Bearing Heteroleptic Terpyridine Ligands: Synthesis, Photophysics and Solar Energy Conversion

et al. 2021

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“…The electrodes were made using a modified version of a method described in a previously published paper [46][47][48][49][50]. To make the photoanode, a thin film of TiO 2 was deposited using a spin coater on the conducting side of an FTO glass, and then annealed at 380 • C for 2 h. After an hour of immersion in TiCl 4 solution, the TiO 2 -coated FTO glass was annealed once more for 30 min.…”

Section: Fabrication Of Jamun Black Plum and Blackberry Dsscmentioning

confidence: 99%

Characterization and Comparison of DSSCs Fabricated with Black Natural Dyes Extracted from Jamun, Black Plum, and Blackberry

Sikder,

Ghann,

Jani

et al. 2023

Energies

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In this report, natural dyes extracted from three different, black-colored fruits were used as photosensitizers for the construction of dye-sensitized solar cells (DSSCs). The natural dyes were extracted from the dark-colored peels of jamun (also known as Indian black plum), black plum, and blackberry fruit. These natural dyes contain polyphenolic compounds—most prominently anthocyanins—which interact strongly with titanium dioxide (TiO2) semiconductors and accordingly enhance the efficiency of DSSCs. The natural dyes extracted from the various fruits were characterized utilizing UV-Vis and fluorescence spectroscopy. The interaction between the dyes and TiO2 was monitored with FTIR and Raman spectroscopy. The fabricated DSSCs were characterized via current–voltage measurements and electrochemical impedance analysis. DSSCs fabricated with jamun produced the highest efficiency of 1.09% with a short-circuit current of 7.84 mA/cm2, an open-circuit voltage of 0.45 V, and a fill factor of 0.31. The efficiencies of the DSSCs from black plum and blackberry were 0.55% and 0.38%, respectively. The flow of charge occurring at the interfaces between the natural dye and the TiO2 layers were investigated using electrochemical impedance spectroscopy (EIS). To the best of our knowledge, this study is the first to directly compare three distinct types of black DSSCs. Computation analysis was also carried out utilizing SCAPS-1D software (version 3.3.07), which revealed how the type of defects in the devices impacts their performance.

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Novel platinum-free counter-electrode with PEDOT:PSS-treated graphite/activated carbon for efficient dye-sensitized solar cells

Senadeera,

Rasnayake,

Kumari

et al. 2024

Ionics

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Nanostructured Dye Sensitized Solar Cells with Different Counter Electrodes

Cited by 5 publications

References 0 publications

Ruthenium (II) Complexes Bearing Heteroleptic Terpyridine Ligands: Synthesis, Photophysics and Solar Energy Conversion

Ruthenium (II) Complexes Bearing Heteroleptic Terpyridine Ligands: Synthesis, Photophysics and Solar Energy Conversion

Characterization and Comparison of DSSCs Fabricated with Black Natural Dyes Extracted from Jamun, Black Plum, and Blackberry

Novel platinum-free counter-electrode with PEDOT:PSS-treated graphite/activated carbon for efficient dye-sensitized solar cells

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