scholarly journals Novel Imidazole Substituted Bodipy-Based Organic Sensitizers in Dye-Sensitized Solar Cells

2018 ◽  
Vol 2018 ◽  
pp. 1-9 ◽  
Author(s):  
Mao Mao ◽  
Xiao-Lin Zhang ◽  
Guo-Hua Wu
Keyword(s):  
Solar Cells ◽  
Organic Dyes ◽  
Dye Sensitized Solar Cells ◽  
Cyanoacetic Acid ◽  
Dye Sensitized ◽  
Boron Dipyrromethene ◽  
Harvesting Efficiency ◽  
Conversion Efficiencies ◽  
Sensitized Solar Cells ◽  
Organic Sensitizers

A comparative study on the photophysical, electrochemical properties and photovoltaic performances of pure imidazole dyes containing varying linker groups is done. Two new organic dyes containing 4,5-bis(4-methoxyphenyl)-1H-imidazole (BPI) unit as an electron donor, boron dipyrromethene (Bodipy) chromophore as a conjugate bridge, cyanoacetic acid as an electron acceptor, and phenylene (BPI-P) or thienyl (BPI-T) as a additional linker have been synthesized for fabricating dye-sensitized solar cells (DSSCs). A reference dye (DPI-T) with 6,9-dimethoxy-1H-phenanthro[9,10-d]imidazole as the donor has also been synthesized for comparison. The overall conversion efficiencies of 0.18%, 0.32%, and 1.28% were obtained for DSSCs based on BPI-P, BPI-T, and DPI-T, respectively. DPI-T was found to be more efficient than BPI-P and BPI-T because of its enhanced light harvesting efficiency and better coplanar geometry of the electronic structure.

scholarly journals Thiazolo[5,4-d]thiazole-based organic sensitizers with improved spectral properties for application in greenhouse-integrated dye-sensitized solar cells

2020 ◽  
Vol 4 (5) ◽  
pp. 2309-2321 ◽  
Author(s):  
Alessio Dessì ◽  
Massimo Calamante ◽  
Adalgisa Sinicropi ◽  
Maria Laura Parisi ◽  
Luigi Vesce ◽  
...  
Keyword(s):  
Solar Cells ◽  
Spectral Properties ◽  
Organic Dyes ◽  
Dye Sensitized Solar Cells ◽  
Molecular Scaffold ◽  
Dye Sensitized ◽  
Sensitized Solar Cells ◽  
Organic Sensitizers

Semitransparent dye-sensitized solar cells (DSSCs) for greenhouse integration were manufactured by using especially designed organic dyes featuring different heterocyclic moieties integrated into a thiazolo[5,4-d]thiazole-molecular scaffold.

Significantly improved performance of dye-sensitized solar cells by optimizing organic dyes with pyrrole as the isolation spacer and utilizing alkyl chain engineering

2018 ◽  
Vol 6 (44) ◽  
pp. 22256-22265 ◽  
Author(s):  
Jinfeng Wang ◽  
Siwei Liu ◽  
Zhaofei Chai ◽  
Kai Chang ◽  
Manman Fang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Charge Transfer ◽  
Alkyl Chain ◽  
Organic Dyes ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized ◽  
Improved Performance ◽  
Conversion Efficiencies ◽  
Sensitized Solar Cells ◽  
Interfacial Charge

The conversion efficiencies of dye sensitized solar cells were largely enhanced by the optimization of intramolecular and interfacial charge transfer.

scholarly journals Sustainable Organic Dyes from Winemaking Lees for Photoelectrochemical Dye-Sensitized Solar Cells

2020 ◽  
Vol 10 (6) ◽  
pp. 2149
Author(s):  
Manuel Meneghetti ◽  
Aldo Talon ◽  
Elti Cattaruzza ◽  
Emilio Celotti ◽  
Elisabetta Bellantuono ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Dyes ◽  
Low Cost ◽  
Dye Sensitized Solar Cells ◽  
Cost Effective ◽  
Simulated Solar Light ◽  
Dye Sensitized ◽  
Different Temperatures ◽  
Conversion Efficiencies ◽  
Sensitized Solar Cells

During the last two decades, Dye Sensitized Solar Cells (DSSCs) have received a great deal of attention as a promising, low-cost alternative to conventional silicon photovoltaic devices. Natural dye molecules can be used as a sensitizer for their low cost, good light absorbance, easy preparation process, and biodegradability. In this study, dyes were obtained from wine lees, the last by-product of winemaking process, supplied by a venetian winery (Italy). Polyphenols, like tannins and anthocyanins, which were extracted from winemaking lees, were adsorbed on a nanostructured ordered mesoporous titanium dioxide, previously treated at different temperatures (400–600 °C). Both dyes and titania semiconductor samples were studied with different techniques. The tests were carried out on prototypes to evaluate the cell power and the photocurrent generated under simulated solar light irradiation. The obtained solar energy conversion efficiencies are comparable to those that were reported in literature by using organic dyes extracted from vegetables, fruits, and plants. It is significant that these dyes are largely available and cost effective, since recovered from a waste otherwise to be disposed of, opening up a perspective of feasibility for inexpensive and environmentally friendly dye solar cells to generate green electricity and transforming agri-food waste into a resource.

Investigation of photovoltaic properties of dye-sensitized solar cells based on azo dyes contain various anchoring groups

2019 ◽  
Vol 48 (6) ◽  
pp. 481-486 ◽  
Author(s):  
Mozhgan Hosseinnezhad ◽  
Hanieh Shaki
Keyword(s):  
Solar Cells ◽  
Substituent Effect ◽  
Organic Dyes ◽  
Dye Sensitized Solar Cells ◽  
Photovoltaic Properties ◽  
Content Type ◽  
Dye Sensitized ◽  
Anchoring Groups ◽  
Conversion Efficiencies ◽  
Sensitized Solar Cells

Purpose The purpose of this paper is to study the substituent effect in dye-sensitized solar cells’ (DSSCs) performance. For this end, three new metal organic dyes with DPA structure were synthesized. For investigation of the substituent effect, two different anchoring groups, namely, 1,3-dioxo-1Hbenz[de]isoquinolin-2(3H)-yl)benzenesulfonamides and 1,8-naphthalimide, were used. Design/methodology/approach Three organic dyes based on azo were selected, which contain various electron donor groups. Absorption properties of purified dyes were studied in solution and on photoelectrode (TiO2 and ZnO) substrate. DSSCs were prepared to determine the photovoltaic performance of each photosensitizer. Findings The results showed that all organic dyes form J-aggregation on the photoanode substrate. Cyclic voltammetry results for all organic dyes ensured an energetically permissible and thermodynamically favorable charge transfer throughout the continuous cycle of photo-electric conversion. The results illustrate conversion efficiencies of cells based on solution Dyes 1, 2 and 3 and TiO2 as 3.44, 4.71 and 4.82 per cent, respectively. The conversion efficiencies of cells based on solution Dye 1, 2 and 3 and ZnO are 3.21, 4.09 and 4.14 per cent, respectively. Practical implications In this study, the development of effect of assembling materials, offering improved photovoltaic properties. Social implications Organic dye attracts more and more attention because of its low-cost, facile route synthesis and less-hazardous properties. Originality/value To the best of the authors’ knowledge, the effect of anchoring agent and nanostructure on DSSCs performance was investigated for the first time.

N-Annulated perylene-based metal-free organic sensitizers for dye-sensitized solar cells

2015 ◽  
Vol 51 (23) ◽  
pp. 4842-4845 ◽  
Author(s):  
Liu Yang ◽  
Zhiwei Zheng ◽  
Yan Li ◽  
Wenjun Wu ◽  
He Tian ◽  
...  
Keyword(s):  
Solar Cells ◽  
Dye Sensitized Solar Cells ◽  
Metal Free ◽  
Dye Sensitized ◽  
Perylene Derivatives ◽  
Conversion Efficiencies ◽  
Sensitized Solar Cells ◽  
Organic Sensitizers

A series of novel metal-free organic sensitizers based on N-annulated perylene derivatives have been conveniently synthesized, and the DSCs exhibit overall conversion efficiencies ranging from 4.90% to 8.28%.

Recent developments in tetrathiafulvalene and dithiafulvalene based metal-free organic sensitizers for dye-sensitized solar cells: a mini-review

2017 ◽  
Vol 1 (4) ◽  
pp. 678-688 ◽  
Author(s):  
Naresh Duvva ◽  
Ushasri Chilakamarthi ◽  
Lingamallu Giribabu
Keyword(s):  
Solar Cells ◽  
Organic Dyes ◽  
Dye Sensitized Solar Cells ◽  
Molecular Engineering ◽  
Metal Free ◽  
Dye Sensitized ◽  
Recent Developments ◽  
Sensitized Solar Cells ◽  
Homo Lumo ◽  
Organic Sensitizers

Tetrathiafulvalene and dithiafulvalene are thermally stable, versatile and their HOMO–LUMO levels can be easily through molecular engineering to yield metal-free organic dyes for dye-sensitized solar cells, which are not restricted by the availability of natural resources.

Accurate estimation of the photoelectric conversion efficiency of a series of anthracene-based organic dyes for dye-sensitized solar cells

2020 ◽  
Vol 8 (7) ◽  
pp. 2388-2399 ◽  
Author(s):  
Panpan Heng ◽  
Lemin Mao ◽  
Xugeng Guo ◽  
Li Wang ◽  
Jinglai Zhang
Keyword(s):  
Solar Cells ◽  
Optical Absorption ◽  
Organic Dyes ◽  
Dye Sensitized Solar Cells ◽  
Accurate Estimation ◽  
Photoelectric Conversion Efficiency ◽  
Photoelectric Conversion ◽  
Dye Sensitized ◽  
Conversion Efficiencies ◽  
Sensitized Solar Cells

Studies demonstrate that our designed dyes 3 and 4 exhibit broad optical absorption in the 550–650 nm region and high photoelectric conversion efficiencies of over 32%.

Highly efficient and stable organic sensitizers with duplex starburst triphenylamine and carbazole donors for liquid and quasi-solid-state dye-sensitized solar cells

2014 ◽  
Vol 2 (24) ◽  
pp. 8988-8994 ◽  
Author(s):  
Li-Lin Tan ◽  
Jian-Feng Huang ◽  
Yong Shen ◽  
Li-Min Xiao ◽  
Jun-Min Liu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solid State ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized ◽  
Highly Efficient ◽  
Conversion Efficiencies ◽  
Sensitized Solar Cells ◽  
Organic Sensitizer ◽  
Organic Sensitizers

A starburst organic sensitizer (see picture) has been designed and synthesized, which shows extremely high overall conversion efficiencies of 10.03% in liquid DSSCs and 8.05% in quasi-solid-state DSSCs.

scholarly journals Fabrication of DSSCs with biebrich scarlet, alizarine cyanine green and evans blue dyes as new organic photosensitizers

2018 ◽  
Vol 36 (4) ◽  
pp. 655-661 ◽  
Author(s):  
Sarita Bose ◽  
K.R. Genwa
Keyword(s):  
Solar Cells ◽  
Evans Blue ◽  
Organic Dyes ◽  
Low Cost ◽  
Dye Sensitized Solar Cells ◽  
Photoelectrochemical Cells ◽  
Dye Sensitized ◽  
New Generation ◽  
Conversion Efficiencies ◽  
Sensitized Solar Cells

AbstractDye sensitized solar cells are photoelectrochemical cells mimicking photosynthesis. They represent a new generation of solar cells which is intensively studied nowadays. This cell was fabricated using TiO2 nanoparticles coated on FTO glass, organic dyes as photosensitizer, PEDOT:PSS as counter electrode and iodide-triiodide as electrolyte. The present work aims at the use of low cost new organic dyes viz. biebrich scarlet, alizarine cyanine green and evans blue for DSSC as an alternative to metallic dyes. In the present work, I-V characteristics, energy or power conversion efficiencies of the dyes have been studied in different solvents. The photoelectrochemical properties of the dyes were observed under 1.5 AM condition.

scholarly journals Dithieno[2,3-d;2′,3′-d′]benzo[1,2-b;4,5-b′]dithiophene based organic sensitizers for dye-sensitized solar cells

RSC Advances ◽  
2014 ◽  
Vol 4 (96) ◽  
pp. 54130-54133 ◽  
Author(s):  
Xin Guo ◽  
Hoi Nok Tsao ◽  
Peng Gao ◽  
Debin Xia ◽  
Cunbin An ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Dyes ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized ◽  
Sensitized Solar Cells ◽  
Organic Sensitizers

We report two novel D–π–A type organic dyes with a coplanar dithieno[2,3-d;2′,3′-d′]benzo[1,2-b;4,5-b′]dithiophene (DTBDT) as π-spacer for dye-sensitized solar cells.

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