N-Aryl Arenedicarboximides as Tunable Panchromatic Dyes for Molecular Solar Cells

Three organic dyes designed as molecular dyads were prepared that feature a common naphthalimide acceptor andN-aryl donors. One of these incorporated an additional cyanoacrylic acid linker and conjugated thiophene bridge inserted between donor and acceptor groups. Electrochemical and photochemical characterizations have been carried out on nanocrystalline TiO2dye-sensitized solar cells which were fabricated with these dyes as the sensitizing component. HOMO and LUMO energies were also calculated using TDDFT methods and validated by the cyclic voltammetry method. A key finding from this study indicates that computational methods can provide energy values in close agreement to experimental for theN-aryl-naphthalimide system. Relative to HOMO/LUMO energy levels ofN719, the dyes based on naphthalimide chromophore are promising candidates for metal-free DSSCs.

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Tuning the HOMO and LUMO Energy Levels of Organic Dyes with N-Carboxomethylpyridinium as Acceptor To Optimize the Efficiency of Dye-Sensitized Solar Cells

The Journal of Physical Chemistry C ◽

10.1021/jp311378b ◽

2013 ◽

Vol 117 (18) ◽

pp. 9076-9083 ◽

Cited By ~ 59

Author(s):

Ming Cheng ◽

Xichuan Yang ◽

Fuguo Zhang ◽

Jianghua Zhao ◽

Licheng Sun

Keyword(s):

Solar Cells ◽

Organic Dyes ◽

Energy Levels ◽

Dye Sensitized Solar Cells ◽

Lumo Energy ◽

Dye Sensitized ◽

Homo And Lumo ◽

Sensitized Solar Cells ◽

Homo And Lumo Energy

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Effect of Electron Donor and Acceptor on the Photovoltaic Properties of Organic Dyes for Efficient Dye-Sensitized Solar Cells

SSRN Electronic Journal ◽

10.2139/ssrn.3710407 ◽

2020 ◽

Author(s):

Faezeh Pakravesh ◽

Mohammad Izadyar ◽

Foroogh Arkan

Keyword(s):

Solar Cells ◽

Electron Donor ◽

Organic Dyes ◽

Dye Sensitized Solar Cells ◽

Photovoltaic Properties ◽

Dye Sensitized ◽

Donor And Acceptor ◽

Electron Donor And Acceptor ◽

Sensitized Solar Cells

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Relationship between measurement conditions and energy levels in the organic dyes used in dye-sensitized solar cells

RSC Advances ◽

10.1039/c5ra14030g ◽

2015 ◽

Vol 5 (101) ◽

pp. 82859-82864 ◽

Cited By ~ 4

Author(s):

Valentas Gaidelis ◽

Egidijus Kamarauskas ◽

Tadas Malinauskas ◽

Vytautas Getautis ◽

Robert Send ◽

...

Keyword(s):

Solar Cells ◽

Organic Dyes ◽

Energy Levels ◽

Dye Sensitized Solar Cells ◽

Dye Molecules ◽

Metal Free ◽

Dye Sensitized ◽

Sensitized Solar Cells

The energy levels of new metal-free organic dyes for DSSC have been investigated by the photoemission in air, UV-Vis absorption and CV methods in the solutions of the dye molecules, in films of the dyes and in the dyes adsorbed on nanoporous TiO2.

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Effect of electron donor and acceptor on the photovoltaic properties of organic dyes for efficient dye-sensitized solar cells

Physica B Condensed Matter ◽

10.1016/j.physb.2021.412815 ◽

2021 ◽

Vol 609 ◽

pp. 412815

Author(s):

Faezeh Pakravesh ◽

Mohammad Izadyar ◽

Foroogh Arkan

Keyword(s):

Solar Cells ◽

Electron Donor ◽

Organic Dyes ◽

Dye Sensitized Solar Cells ◽

Photovoltaic Properties ◽

Dye Sensitized ◽

Donor And Acceptor ◽

Electron Donor And Acceptor ◽

Sensitized Solar Cells

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Computational Investigation of Tuning the Electron-Donating Ability in Metal-Free Organic Dyes Featuring an Azobenzene Spacer for Dye-Sensitized Solar Cells

Nanomaterials ◽

10.3390/nano9010119 ◽

2019 ◽

Vol 9 (1) ◽

pp. 119 ◽

Cited By ~ 6

Author(s):

Md Al Mamunur Rashid ◽

Dini Hayati ◽

Kyungwon Kwak ◽

Jongin Hong

Keyword(s):

Solar Cells ◽

Organic Dyes ◽

Gradual Increase ◽

Dye Sensitized Solar Cells ◽

Computational Investigation ◽

Dye Sensitized ◽

Optical And Electronic Properties ◽

Donor And Acceptor ◽

New Research ◽

Sensitized Solar Cells

A series of donor–π-conjugated spacer–acceptor (D–π–A) organic dyes featuring an azobenzene spacer were designed as chromic dyes and investigated computationally. The electron-donating strength was modified by introducing electron-donating units to the donor side. In particular, the trans–cis isomerization of the azobenzene-based dyes and its effect on the optical and electronic properties were further scrutinized. In both trans and cis conformers, a gradual increase in electron-donating strength promoted the natural charge separation between donor and acceptor moieties, thereby allowing the absorption of a longer wavelength of visible light. Importantly, the conformational change of the azobenzene bridge resulted in different absorption spectra and light-harvesting properties. The azobenzene-based dyes will open up a new research path for chromic dye-sensitized solar cells.

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