Near-Infrared Asymmetrical Squaraine Sensitizers for Highly Efficient Dye Sensitized Solar Cells: The Effect of π-Bridges and Anchoring Groups on Solar Cell Performance

2015 ◽  
Vol 27 (7) ◽  
pp. 2480-2487 ◽  
Author(s):  
Fadi M. Jradi ◽  
Xiongwu Kang ◽  
Daniel O’Neil ◽  
Gabriel Pajares ◽  
Yulia A. Getmanenko ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Near Infrared ◽  
Dye Sensitized Solar Cells ◽  
Cell Performance ◽  
Solar Cell Performance ◽  
Dye Sensitized ◽  
Highly Efficient ◽  
Anchoring Groups ◽  
Sensitized Solar Cells

Improvement of D–π–A organic dye-based dye-sensitized solar cell performance by simple triphenylamine donor substitutions on the π-linker of the dye

2017 ◽  
Vol 1 (6) ◽  
pp. 1059-1072 ◽  
Author(s):  
N. Prachumrak ◽  
T. Sudyoadsuk ◽  
A. Thangthong ◽  
P. Nalaoh ◽  
S. Jungsuttiwong ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Dye Sensitized Solar Cells ◽  
Organic Dye ◽  
Cell Performance ◽  
Dye Sensitized Solar Cell ◽  
Solar Cell Performance ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Three new D–π–A dyes containing different numbers of triphenylamine donor substitutions on a π-linker were synthesized for dye-sensitized solar cells.

scholarly journals Phenothiazine-Sensitized Solar Cells: Effect of Number of Cyanocinnamic Acid Anchoring Groups on Dye-Sensitized Solar Cell Performance

ChemPlusChem ◽  
2017 ◽  
Vol 82 (6) ◽  
pp. 896-903 ◽  
Author(s):  
Shivaraj Yellappa ◽  
Whitney A. Webre ◽  
Habtom B. Gobeze ◽  
Anna Middleton ◽  
Chandra B. KC ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Cell Performance ◽  
Dye Sensitized Solar Cell ◽  
Solar Cell Performance ◽  
Dye Sensitized ◽  
Cyanocinnamic Acid ◽  
Anchoring Groups ◽  
Sensitized Solar Cells

scholarly journals EFFECT OF THE CHROMOPHORES STRUCTURES ON THE PERFORMANCE OF SOLID-STATE DYE SENSITIZED SOLAR CELLS

NANO ◽  
2014 ◽  
Vol 09 (05) ◽  
pp. 1440005 ◽  
Author(s):  
HAINING TIAN ◽  
ANDREA SOTO ◽  
BO XU ◽  
LICHENG SUN ◽  
ANDERS HAGFELDT ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Solid State ◽  
Dye Sensitized Solar Cells ◽  
Molecular Structures ◽  
Cell Performance ◽  
Solar Cell Performance ◽  
Dye Sensitized ◽  
Sensitized Solar Cells ◽  
Dye Structure

The effect of metal-free chromophores on dye-sensitized solar cell performance is investigated. Solid state dye-sensitized solar cells (ssDSCs) using different molecular sensitizers based on triphenylamine (TPA) with thiophene linkers and different alkyl chain in the donor unit have been characterized using impedance spectroscopy (IS). We show that different molecular structures play a fundamental role on solar cell performance, by the effect produced on TiO 2 conduction band position and in the recombination rate. Dye structure and its electronic properties are the main factors that control the recombination, the capacitance and the efficiency of the cells. A clear trend between the performance of the cell and the optimization level of the blocking effect of the dye structure has been identified in the solid state solar cells with Spiro-OMeTAD hole conductor.

Porphyrins as Potential Sensitizers for Dye-Sensitized Solar Cells

2010 ◽  
Vol 451 ◽  
pp. 29-40 ◽  
Author(s):  
Hiroshi Imahori
Keyword(s):  
Solar Cells ◽  
Near Infrared ◽  
Light Harvesting ◽  
Dye Sensitized Solar Cells ◽  
Soret Band ◽  
Cell Performance ◽  
Absorption Bands ◽  
Dye Sensitized ◽  
Highly Efficient ◽  
Sensitized Solar Cells

Recently, dye-sensitized solar cells have attracted much attention relevant to global environmental issues. So far ruthenium(II) bipyridyl complexes have proven to be the most efficient TiO2 sensitizers in dye-sensitized solar cells. However, the highest power conversion efficiency has been stagnated in recent years. More importantly, considering that ruthenium is rare and expensive, novel dyes without metal or using inexpensive metal are desirable for highly efficient dye-sensitized solar cells. To fulfill the requirement, it is crucial to develop inexpensive novel dyes that exhibit high efficiencies in terms of light-harvesting, charge separation, and charge collection. Porphyrins are important classes of potential sensitizers for highly efficient dye-sensitized solar cells owing to their photostability and potentially high light-harvesting capabilities that would allow applications in thinner, low-cost dye-sensitized solar cells. However, typical porphyrins possess an intense Soret band at 400 nm and moderate Q bands at 600 nm, which does not match solar energy distribution on the earth. Therefore, the unmatched light-harvesting property relative to the ruthenium complexes has limited the cell performance of porphyrin-sensitized TiO2 cells. Elongation of the -conjugation and loss of symmetry in porphyrins cause broadening and red-shift of the absorption bands together with an increasing intensity of the Q bands relative to that of the Soret band. On the basis of the strategy, the cell performance of porphyrin-sensitized solar cells has been improved remarkably by the enhanced light absorption. The efficiency of porphyrin-sensitized solar cells could be improved significantly if the dyes with larger red and near-infrared absorption could be developed.

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