Benzoporphyrins bearing pyridine or pyridine-N-oxide anchoring groups as sensitizers for dye-sensitized solar cell

2016 ◽  
Vol 20 (01n04) ◽  
pp. 542-555 ◽  
Author(s):  
Benjamin Schmitz ◽  
Bihong Li ◽  
R. G. Waruna Jinadasa ◽  
Shashi B. Lalvani ◽  
Lei L. Kerr ◽  
...  
Keyword(s):  
Solar Cells ◽  
Energy Level ◽  
Conduction Band ◽  
Spectroscopic Data ◽  
Energy Levels ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized ◽  
Oxidation Potentials ◽  
Anchoring Groups ◽  
Sensitized Solar Cells

Novel benzoporphyrins bearing pyridine or pyridine-[Formula: see text]-oxide groups were prepared through a concise method based on a Pd0 catalyzed cascade reaction. These benzoporphyrins were examined as sensitizers for dye-sensitized solar cells. Vicinal pyridine and vicinal pyridine-[Formula: see text]-oxide groups were introduced as new types of anchoring/acceptor groups for dye-sensitized solar cells for the first time. While all the porphyrins showed solar to electricity conversion, benzoporphyrins bearing pyridine-[Formula: see text]-oxide anchoring groups displayed higher conversion efficiency than benzoporphyrins bearing pyridine-anchoring groups.Opp-dibenzoporphyrins display broadened and red-shifted UV-vis absorption and emission bands as compared with those of the monobenzoporphyrins, which arises from the fusion of one more benzene ring and the attachment of two more electron-withdrawing groups to the porphyrin [Formula: see text]-positions. Cyclic voltammetry (CV) data and DFT calculation data obtained for these porphyrins agree well with their UV-vis absorption and fluorescence spectroscopic data. The HOMO energy level derived from the first oxidation potentials indicate that regeneration of the resulting porphyrin radical cation by the redox mediator (I[Formula: see text]/I[Formula: see text] is thermodynamically feasible for all these benzoporphyrin sensitizers (3, 5, 8 and 10). On the other hand, excited state energy levels of these benzoporphyrins calculated from the CV data, the UV-vis and fluorescence spectroscopic data are all slightly lower than the energy level of the conduction band of TiO2, suggesting insufficient driving force for efficient electron injection from the porphyrin excited singlet state to the conduction band of TiO2.

Energy level engineering of thieno[3,4-b]pyrazine based organic sensitizers for quasi-solid-state dye-sensitized solar cells

2016 ◽  
Vol 4 (9) ◽  
pp. 3342-3355 ◽  
Author(s):  
Jinhong Wu ◽  
Guangfeng Li ◽  
Lu Zhang ◽  
Gang Zhou ◽  
Zhong-Sheng Wang
Keyword(s):  
Solar Cells ◽  
Solid State ◽  
Energy Level ◽  
Energy Levels ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized ◽  
Sensitized Solar Cells ◽  
Organic Sensitizers

Energy levels of thieno[3,4-b]pyrazine based organic sensitizers have been successfully optimized for efficient quasi-solid-state dye-sensitized solar cells.

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.

Enhancing the performance of dye-sensitized solar cells: doping SnO2photoanodes with Al to simultaneously improve conduction band and electron lifetime

2015 ◽  
Vol 3 (6) ◽  
pp. 3066-3073 ◽  
Author(s):  
Yandong Duan ◽  
Jiaxin Zheng ◽  
Nianqing Fu ◽  
Yanyan Fang ◽  
Tongchao Liu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Conduction Band ◽  
High Performance ◽  
Dye Sensitized Solar Cells ◽  
Electron Lifetime ◽  
Al Doping ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Al-doping of SnO2photoanodes can simultaneously improve conduction band and electron lifetime of high-performance 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.

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