Synthesis and DSSC application of donor-acceptor stilbenoid dendrimers with triphenylamine as core and benzothiazole as surface unit

Rajavelu, Kannan; Rajakumar, Perumal

doi:10.1016/j.orgel.2018.02.020

Cited by 12 publications

(3 citation statements)

References 31 publications

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“…The nature of the photosensitizers counts among the significant issues in developing high‐performance DSSCs, an enterprise which has to do with the solar‐to‐energy transformation efficacy 4‐6 . Fluorescent heterocyclic compounds exhibit exclusive electrical and optical properties and serve a function in dye‐sensitized solar cells (DSSCs) as organic photosensitizers 7,8 …”

Section: Introductionmentioning

confidence: 99%

Synthesis, electrochemical, photophysical, and photovoltaic properties of new fluorescent compounds: 3 H ‐benzofuro[2,3‐ b ]pyrazolo[4,3‐ f ]quinoline

et al. 2021

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Summary The concern with fluorescent heterocyclic compounds has been growing because they can be utilized in dye‐sensitized solar cells (DSSCs) as organic photosensitizers. As a result of the experiment we conducted, the following outcomes emerged: new fluorescent heterocyclic systems 3H‐benzofuro[2,3‐b]pyrazolo[4,3‐f]quinolines ensued from reaction of 1‐alkyl‐5‐nitro‐1H‐indazole with 2‐(benzofuran‐3‐yl)acetonitrile in KOH/MeOH. New heterocyclic compounds were characterized through a use of elemental analysis and spectroscopic data. The results of the optical properties of the fluorescent compounds demonstrated that their fluorescence quantum yields are comparable to the quantum yields of such well‐known fluorescent dyes as fluorescein. Furthermore, the cyclic voltammetry revealed the electrochemical attributes of the fluorescent heterocyclic systems and that reversible oxidation waves are observable in their case. In order for their photovoltaic performance parameters to be determined, the I‐V curves and the IPCE spectra of the new compounds were launched into an investigation. What followed exposed that the photovoltaic performances of the foregoing compounds were 5.01% to 5.17%.

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Section: Introductionmentioning

confidence: 99%

Synthesis, electrochemical, photophysical, and photovoltaic properties of new fluorescent compounds: 3 H ‐benzofuro[2,3‐ b ]pyrazolo[4,3‐ f ]quinoline

et al. 2021

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“…As one of the momentous renewable energy sources, solar energy could be one of the best candidates for energy supply in the world. For this purpose, innovative ideas are needed to harvest incident solar energy into electrical energy with a higher output to meet the challenging goals for clean energy supply and demand. , Dye-sensitized solar cells (DSSCs) are considered to be an alternative to conventional solid-state solar cells due to the low-cost manufacturing and high photovoltaic performance. − Typically, DSSCs include transparent conducting oxide electrode FTO (fluorine-doped tin oxide), ITO (indium tin oxide) with a TiO 2 nanocrystal (as anode), and a counter electrode (as cathode) and an electrolyte containing a redox couple such as iodine/iodide and sulfide/polysulfide. , …”

Section: Introductionmentioning

confidence: 99%

Improvement of Power Conversion Efficiency of Quantum Dot-Sensitized Solar Cells by Doping of Manganese into a ZnS Passivation Layer and Cosensitization of Zinc-Porphyrin on a Modified Graphene Oxide/Nitrogen-Doped TiO₂ Photoanode

et al. 2020

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It is vital to acquire power conversion efficiencies comparable to other emerging solar cell technologies by making quantum dot-sensitized solar cells (QDSSCs) competitive. In this study, the effect of graphene oxide (GO), nitrogen, manganese, and a porphyrin compound on the performance of QDSSCs based on a TiO2/CdS/ZnS photoanode was investigated. First, adding GO and nitrogen into TiO2 has a conspicuous impact on the cell efficacy. Both these materials reduce the recombination rate and expand the specific surface area of TiO2 as well as dye loading, reinforcing cell efficiency value. The maximum power conversion efficiency of QDSSC with a GO N-doped photoelectrode was 2.52%. Second, by employing Mn2+ (5 and 10 wt %) doping of ZnS, we have succeeded in considerably improving cell performance (from 2.52 to 3.47%). The reason for this could be for the improvement of the passivation layer of ZnS by Mn2+ ions, bringing about to a smaller recombination of photoinjected electrons with either oxidized dye molecules or electrolyte at the surface of titanium dioxide. However, doping of 15 wt % Mn2+ had an opposite effect and somewhat declined the cell performance. Finally, a Zn-porphyrin dye was added to the CdS/ZnS by a cosensitization method, widening the light absorption range to the NIR (near-infrared region) (>700 nm), leading to the higher short-circuit current density (J SC) and cell efficacy. Utilizing an environmentally safe porphyrin compound into the structure of QDSSC has dramatically enhanced the cell efficacy to 4.62%, which is 40% higher than that of the result obtained from the TiO2/CdS/ZnS photoelectrode without porphyrin coating.

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“…Herein, following a biomimetic strategy and exploring the exceptional properties conferred by a dendritic polymer architecture, we developed a jelly dendrimer hybrid photodiode‐like device (D‐HPD) based on an active single layer. The new D‐HPDs comprise poly(imidazolone amine) (PIMAM) dendrimers having donor (triphenylamine) and electron acceptor (imidazolone) units, synthesized in two steps by a green approach reported by us, and a ruthenium dye sensitizer.…”

Section: Introductionmentioning

confidence: 99%

Photodiode‐like behavior of jelly dye‐sensitized donor‐acceptor dendrimers

Pires

Charas

Morgado

et al. 2019

J of Applied Polymer Sci

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Hybrid photodiodes (HPD) systems are on the rise. The growing interest on these devices is mainly due to their power in image sensing and bioengineering solutions. In this work, a new class of donor-acceptor dendrimers was synthesized and incorporated, along with a ruthenium sensitizer dye, into low cost devices comprised of one single layer of a biocompatible matrix (agarose). Exploring different electrodes, low current devices with a counter-electrode dependent response have been successfully assembled at room temperature. Using a stainless steel electrode, sensitized donor-acceptor dendrimers provide photodiode-like systems having nA dark currents.

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Synthesis and DSSC application of donor-acceptor stilbenoid dendrimers with triphenylamine as core and benzothiazole as surface unit

Cited by 12 publications

References 31 publications

Synthesis, electrochemical, photophysical, and photovoltaic properties of new fluorescent compounds: 3 H ‐benzofuro[2,3‐ b ]pyrazolo[4,3‐ f ]quinoline

Synthesis, electrochemical, photophysical, and photovoltaic properties of new fluorescent compounds: 3 H ‐benzofuro[2,3‐ b ]pyrazolo[4,3‐ f ]quinoline

Improvement of Power Conversion Efficiency of Quantum Dot-Sensitized Solar Cells by Doping of Manganese into a ZnS Passivation Layer and Cosensitization of Zinc-Porphyrin on a Modified Graphene Oxide/Nitrogen-Doped TiO₂ Photoanode

Photodiode‐like behavior of jelly dye‐sensitized donor‐acceptor dendrimers

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Synthesis and DSSC application of donor-acceptor stilbenoid dendrimers with triphenylamine as core and benzothiazole as surface unit

Cited by 12 publications

References 31 publications

Synthesis, electrochemical, photophysical, and photovoltaic properties of new fluorescent compounds: 3 H ‐benzofuro[2,3‐ b ]pyrazolo[4,3‐ f ]quinoline

Synthesis, electrochemical, photophysical, and photovoltaic properties of new fluorescent compounds: 3 H ‐benzofuro[2,3‐ b ]pyrazolo[4,3‐ f ]quinoline

Improvement of Power Conversion Efficiency of Quantum Dot-Sensitized Solar Cells by Doping of Manganese into a ZnS Passivation Layer and Cosensitization of Zinc-Porphyrin on a Modified Graphene Oxide/Nitrogen-Doped TiO2 Photoanode

Photodiode‐like behavior of jelly dye‐sensitized donor‐acceptor dendrimers

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Improvement of Power Conversion Efficiency of Quantum Dot-Sensitized Solar Cells by Doping of Manganese into a ZnS Passivation Layer and Cosensitization of Zinc-Porphyrin on a Modified Graphene Oxide/Nitrogen-Doped TiO₂ Photoanode