Ti(IV) phthalocyanines for dye sensitized solar cells

2013 ◽  
Vol 17 (08n09) ◽  
pp. 814-820 ◽  
Author(s):  
M. Salomé Rodríguez-Morgade ◽  
Laia Pellejà ◽  
Tomás Torres ◽  
Emilio Palomares
Keyword(s):  
Solar Cells ◽  
Dye Sensitized Solar Cells ◽  
Soret Band ◽  
Axial Ligand ◽  
Dye Sensitized ◽  
Axial Ligands ◽  
Device Efficiency ◽  
Anchoring Groups ◽  
Low Efficiency ◽  
Sensitized Solar Cells

Ti ( IV ) phthalocyanines axially coordinated to 2,3- and 1,8-naphthalenediols have been prepared and characterized. The naphthalene axial ligands have been endowed with none, one or two sulfonate anchoring groups in order to study the performance of the dyes as DSC photosensitizers. All studied compounds showed the same efficiency. The unexpected results suggest displacement of the axial ligand with concomitant formation of a di-μ-oxotitanium-type anchoring moiety between the hydroxylated TiO 2surface and the Ti -phthalocyanine. This is probably the reason why the type of axial ligand does not play any role on the overall device efficiency. The titanium phthalocyanine absorbed in this way shows state selective electron injection were only those photons absorbed by the Soret band are capable to inject electrons into the TiO 2, while photons absorbed by the Q-band result in negligible photocurrent. This fact could explain the low efficiency of the Ti -phthalocyanines.

Structural effects of core-modified porphyrins in dye-sensitized solar cells

2009 ◽  
Vol 13 (08n09) ◽  
pp. 903-909 ◽  
Author(s):  
Yu Xie ◽  
Prakash Joshi ◽  
Mike Ropp ◽  
David Galipeau ◽  
Lifeng Zhang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Tin Dioxide ◽  
Dye Sensitized Solar Cells ◽  
Particle Diameter ◽  
Soret Band ◽  
Dense Layer ◽  
Cell Efficiency ◽  
Dye Sensitized ◽  
Anchoring Groups ◽  
Sensitized Solar Cells

A series of core-modified porphyrins with different meso aryl groups ( R 1), anchoring groups ( R 2), and core atoms (X) were studied as light-harvesting sensitizers for dye-sensitized solar cells (DSSCs). DSSCs were fabricated using these porphyrins as well as TiO2 nanoparticles with a particle diameter of around 25 nm. A dense layer of TiO2 was deposited as an interfacial layer on fluorine-doped tin dioxide (FTO) substrates. A TiO2 nanocrystalline film was then deposited on the dense layer by spin coating. The comparison of DSSC performance from different core-modified porphyrins was studied. The UV-vis absorption spectroscopy of porphyrin films attached on TiO2 and porphyrin solutions were also measured. The results indicated that both anchoring and meso aryl groups impacted on cell performance. The cell efficiency was correlated to the absorption of porphyrin films attached on TiO2 at the Soret band.

Molecular engineering of anchoring groups for designing efficient triazatruxene-based organic dye-sensitized solar cells

2019 ◽  
Vol 43 (17) ◽  
pp. 6480-6491 ◽  
Author(s):  
Narendra Nath Ghosh ◽  
Md. Habib ◽  
Anup Pramanik ◽  
Pranab Sarkar ◽  
Sougata Pal
Keyword(s):  
Solar Cells ◽  
Dye Sensitized Solar Cells ◽  
Organic Dye ◽  
Molecular Engineering ◽  
Dye Sensitized ◽  
Anchoring Groups ◽  
Sensitized Solar Cells

Triazatruxene with designed anchoring groups provides better photovoltaic activities.

Tunable anchoring groups@acridone-linked triphenylamine based pendant chromophores and their effects on the photovoltaic performance as sensitizers for dye-sensitized solar cells

RSC Advances ◽  
2016 ◽  
Vol 6 (110) ◽  
pp. 109054-109060 ◽  
Author(s):  
R. Selvam ◽  
G. Prakash ◽  
K. Subramanian
Keyword(s):  
Solar Cells ◽  
Photovoltaic Performance ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized ◽  
Methacrylate Polymers ◽  
Anchoring Groups ◽  
Sensitized Solar Cells

In this study, a series of pendant chromophores bearing methacrylate polymers with different anchoring/acceptor groups were synthesized for use as sensitizers in the dye-sensitized solar cells.

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.

First principles study of organic sensitizers for dye sensitized solar cells: effects of anchoring groups on optoelectronic properties and dye aggregation

2016 ◽  
Vol 18 (2) ◽  
pp. 1071-1081 ◽  
Author(s):  
Santhanamoorthi Nachimuthu ◽  
Wei-Chieh Chen ◽  
Ermias Girma Leggesse ◽  
Jyh-Chiang Jiang
Keyword(s):  
Solar Cells ◽  
First Principles ◽  
Spectral Properties ◽  
Theoretical Calculations ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized ◽  
Dye Aggregation ◽  
Anchoring Groups ◽  
Sensitized Solar Cells ◽  
Organic Sensitizers

Efficient organic sensitizers with improved spectral properties and less aggregation have been proposed for practical DSSCs based on theoretical calculations.

scholarly journals Performance of natural-dye-sensitized solar cells by ZnO nanorod and nanowall enhanced photoelectrodes

2017 ◽  
Vol 8 ◽  
pp. 287-295 ◽  
Author(s):  
Saif Saadaoui ◽  
Mohamed Aziz Ben Youssef ◽  
Moufida Ben Karoui ◽  
Rached Gharbi ◽  
Emanuele Smecca ◽  
...  
Keyword(s):  
Solar Cells ◽  
Short Circuit ◽  
Dye Sensitized Solar Cells ◽  
Short Circuit Current ◽  
Growth Time ◽  
Dye Sensitized ◽  
Different Temperatures ◽  
Photovoltaic Parameters ◽  
Anchoring Groups ◽  
Sensitized Solar Cells

In this work, two natural dyes extracted from henna and mallow plants with a maximum absorbance at 665 nm were studied and used as sensitizers in the fabrication of dye-sensitized solar cells (DSSCs). Fourier transform infrared (FTIR) spectra of the extract revealed the presence of anchoring groups and coloring constituents. Two different structures were prepared by chemical bath deposition (CBD) using zinc oxide (ZnO) layers to obtain ZnO nanowall (NW) or nanorod (NR) layers employed as a thin film at the photoanode side of the DSSC. The ZnO layers were annealed at different temperatures under various gas sources. Indeed, the forming gas (FG) (N2/H2 95:5) was found to enhance the conductivity by a factor of 103 compared to nitrogen (N2) or oxygen (O2) annealing gas. The NR width varied between 40 and 100 nm and the length from 500 to 1000 nm, depending on the growth time. The obtained NWs had a length of 850 nm. The properties of the developed ZnO NW and NR layers with different thicknesses and their effect on the photovoltaic parameters were studied. An internal coverage of the ZnO NWs was also applied by the deposition of a thin TiO2 layer by reactive sputtering to improve the cell performance. The application of this layer increased the overall short circuit current J sc by seven times from 2.45 × 10−3 mA/cm2 to 1.70 × 10−2 mA /cm2.

Investigation of the photoinduced electron injection processes for natural dye-sensitized solar cells: the impact of anchoring groups

RSC Advances ◽  
2016 ◽  
Vol 6 (88) ◽  
pp. 85125-85134 ◽  
Author(s):  
S. Akın ◽  
S. Açıkgöz ◽  
M. Gülen ◽  
C. Akyürek ◽  
S. Sönmezoğlu
Keyword(s):  
Solar Cells ◽  
Dye Sensitized Solar Cells ◽  
Electron Injection ◽  
Natural Dye ◽  
Natural Dyes ◽  
Dye Sensitized ◽  
Photovoltaic Parameters ◽  
Anchoring Groups ◽  
The Impact ◽  
Sensitized Solar Cells

In this study, nine different natural dyes having various anchoring groups were extracted from various plants and used as photo-sensitizers in DSSC applications. The photovoltaic parameters were investigated as a function of these anchoring groups.

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