Screening donor and acceptor groups for organic azo-based dyes for dye sensitized solar cells

2021 ◽  
Vol 1228 ◽  
pp. 129776
Author(s):  
Dharmendra Biswal ◽  
Anjali Jha ◽  
Anik Sen
Keyword(s):  
Solar Cells ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized ◽  
Donor And Acceptor ◽  
Sensitized Solar Cells

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

2010 ◽  
Vol 2010 ◽  
pp. 1-7 ◽  
Author(s):  
Zhi Cao ◽  
Premchendar Nandhikonda ◽  
Adriana Penuela ◽  
Stephanie Nance ◽  
Michael D. Heagy
Keyword(s):  
Solar Cells ◽  
Organic Dyes ◽  
Energy Levels ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized ◽  
Donor And Acceptor ◽  
Molecular Dyads ◽  
Cyclic Voltammetry Method ◽  
Homo And Lumo ◽  
Sensitized 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.

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

Nanomaterials ◽  
2019 ◽  
Vol 9 (1) ◽  
pp. 119 ◽  
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.

Design strategies of metal free-organic sensitizers for dye sensitized solar cells: Role of donor and acceptor monomers

2014 ◽  
Vol 15 (6) ◽  
pp. 1205-1214 ◽  
Author(s):  
Chieh-Yu Tseng ◽  
Fadlilatul Taufany ◽  
Santhanamoorthi Nachimuthu ◽  
Jyh-Chiang Jiang ◽  
Der-Jang Liaw
Keyword(s):  
Solar Cells ◽  
Dye Sensitized Solar Cells ◽  
Design Strategies ◽  
Metal Free ◽  
Dye Sensitized ◽  
Donor And Acceptor ◽  
Sensitized Solar Cells ◽  
Organic Sensitizers
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