4H-pyranylidene organic dyes for dye-sensitized solar cells: Twisted structures towards enhanced power conversion efficiencies

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

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

Applied Sciences ◽

10.3390/app10062149 ◽

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.

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

Pigment & Resin Technology ◽

10.1108/prt-04-2019-0033 ◽

2019 ◽

Vol 48 (6) ◽

pp. 481-486 ◽

Cited By ~ 1

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.

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Power Conversion Efficiencies of Perovskite and Dye-Sensitized Solar Cells under Various Solar Radiation Intensities

Semiconductors ◽

10.1134/s1063782619040213 ◽

2019 ◽

Vol 53 (4) ◽

pp. 540-544 ◽

Cited By ~ 3

Author(s):

A. B. Nikolskaia ◽

S. S. Kozlov ◽

M. F. Vildanova ◽

O. I. Shevaleevskiy

Keyword(s):

Solar Cells ◽

Solar Radiation ◽

Power Conversion ◽

Dye Sensitized Solar Cells ◽

Dye Sensitized ◽

Conversion Efficiencies ◽

Sensitized Solar Cells

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Carboxy-1,4-phenylenevinylene- and carboxy-2, 6-naphthylene-vinylene unsymmetrical substituted zinc phthalocyanines for dye-sensitized solar cells

Journal of Porphyrins and Phthalocyanines ◽

10.1142/s1088424609000449 ◽

2009 ◽

Vol 13 (03) ◽

pp. 369-375 ◽

Cited By ~ 22

Author(s):

Fabio Silvestri ◽

Miguel García-Iglesias ◽

Jun-Ho Yum ◽

Purificación Vázquez ◽

M. Victoria Martínez-Díaz ◽

...

Keyword(s):

Solar Cells ◽

Solar Cell ◽

Power Conversion ◽

Dye Sensitized Solar Cells ◽

Dye Sensitized Solar Cell ◽

Dye Sensitized ◽

Zinc Phthalocyanines ◽

Conversion Efficiencies ◽

Sensitized Solar Cells ◽

Phthalocyanine Ring

Two unsymmetrical Zn (II) phthalocyanines 1 and 2 bearing an anchoring carboxylic function linked to the phthalocyanine ring through different rigid arylenevinylene bridges have been designed for dye-sensitized solar cell (DSSC) applications. The phthalocyanines 1 and 2, when anchored onto nanocrystalline TiO 2 films, yielded 30% incident monochromatic photon-to-current conversion efficiency (IPCE) and 2% power conversion efficiencies under AM1.5 sun.

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

Journal of Materials Chemistry C ◽

10.1039/c9tc05967a ◽

2020 ◽

Vol 8 (7) ◽

pp. 2388-2399 ◽

Cited By ~ 10

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%.

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Novel Red Light-Absorbing Organic Dyes Based on Indolo[3,2-b]carbazole as the Donor Applied in Co-Sensitizer-Free Dye-Sensitized Solar Cells

Materials ◽

10.3390/ma14071716 ◽

2021 ◽

Vol 14 (7) ◽

pp. 1716

Author(s):

Zhanhai Xiao ◽

Bing Chen ◽

Xudong Cheng

Keyword(s):

Solar Cells ◽

Conversion Efficiency ◽

Density Functional ◽

Electrochemical Impedance ◽

Organic Dyes ◽

Power Conversion ◽

Dye Sensitized Solar Cells ◽

Dye Sensitized ◽

Dye Aggregation ◽

Sensitized Solar Cells

Three novel organic dyes (D6, D7 and D8), based on indolo[3,2-b]carbazole as the donor and different types of electron-withdrawing groups as the acceptors, were synthesized and successfully applied in dye-sensitized solar cells (DSSCs). Their molecular structures were fully characterized by 1H NMR, 13C NMR and mass spectroscopy. The density functional theory (DFT) calculations, electrochemical impedance spectroscopy analysis, UV–Vis absorption characterization and tests of the solar cells were used to investigate the photophysical/electrochemical properties as well as DSSCs’ performances based on the dyes. Dye D8 showed the broadest light-response range (300–770 nm) in the incident monochromatic photo-to-electron conversion efficiency (IPCE) curve, due to its narrow bandgap (1.95 eV). However, dye D6 exhibited the best device performance among the three dyes, with power conversion efficiency of 5.41%, Jsc of 12.55 mA cm−2, Voc of 745 mV and fill factor (FF) of 0.59. We also found that dye aggregation was efficiently suppressed by the introduction of alkylated indolo[3,2-b]carbazole, and, hence, better power conversion efficiencies were observed for all the three dyes, compared to the devices of co-sensitization with chenodeoxycholic acid (CDCA). It was unnecessary to add adsorbents to suppress the dye aggregation.

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β-Functionalized push–pull opp-dibenzoporphyrins as sensitizers for dye-sensitized solar cells: the role of the phenylethynyl bridge

Journal of Materials Chemistry A ◽

10.1039/c9ta01846h ◽

2019 ◽

Vol 7 (17) ◽

pp. 10712-10722 ◽

Cited By ~ 11

Author(s):

Yi Hu ◽

Whitney A. Webre ◽

Michael B. Thomas ◽

Austen Moss ◽

Sarah N. Hancock ◽

...

Keyword(s):

Solar Cells ◽

Power Conversion ◽

Dye Sensitized Solar Cells ◽

Dye Sensitized ◽

Conversion Efficiencies ◽

Sensitized Solar Cells

Push–pull opp-dibenzoporphyrins with a phenylethynyl bridge were newly synthesized as sensitizers for dye-sensitized solar cells, giving power conversion efficiencies up to 6.7%, close to that of the N719 dye under similar conditions.

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Effect of functional groups on sensitization of dye-sensitized solar cells (DSSCs) using free base porphyrins

Journal of Porphyrins and Phthalocyanines ◽

10.1142/s1088424617500390 ◽

2017 ◽

Vol 21 (03) ◽

pp. 222-230 ◽

Cited By ~ 5

Author(s):

Nivedita Chaudhri ◽

Nipun Sawhney ◽

Bijjam Madhusudhan ◽

Anubhav Raghav ◽

Muniappan Sankar ◽

...

Keyword(s):

Solar Cells ◽

Functional Groups ◽

Functional Group ◽

Power Conversion ◽

Dye Sensitized Solar Cells ◽

Amino Group ◽

Free Base ◽

Dye Sensitized ◽

Conversion Efficiencies ◽

Sensitized Solar Cells

Dye-sensitized solar cells (DSSCs) were fabricated with six meso-substituted A[Formula: see text]B and A[Formula: see text] free base porphyrin dyes having different functional groups, as sensitizers. The two step synthesis and the effect of different functional groups and their positions on the photosensitization properties of these porphyrin dyes are reported. The highest power conversion efficiencies ([Formula: see text] of 3.26%, 2.94% and 2.84% were achieved for the DSSC fabricated using 5,10,15-tris(4[Formula: see text]-pyridyl)-20-(4[Formula: see text]-carboxyphenyl)porphyrin (H[Formula: see text]TriPyMCPP), 5,10,15,20-tetrakis(4[Formula: see text]-aminophenyl)porphyrin (H[Formula: see text]TAPP) and 5-(4[Formula: see text]-pyridyl)-10,15,20-tris(4[Formula: see text]-carboxyphenyl)porphyrin (H[Formula: see text]MPyTriCPP) dyes, respectively. The electron donating amino group is shown to enhance the power conversion efficiency while pyridyl appended porphyrin sensitizers are shown to be superior sensitizers as compared to carboxyphenylporphyrins. The investigation of effect of functional group and position of functional group of porphyrin dye on DSSC can serve as an important tool to guide further selection and synthesis of potential candidates as sensitizers.

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