A new ruthenium sensitizer containing dipyridylamine ligand for effective nanocrystalline dye-sensitized solar cells

Kim, Jeum‐Jong; Yoon, Jeonghun

doi:10.1016/j.ica.2012.09.017

Cited by 10 publications

(5 citation statements)

References 33 publications

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“…Another interesting investigation was reported using amphiphilic Ru(II) sensitizers JJ-95 (318) and JJ-99 (319), having a highly conjugated dipyridylamine ligand, to obtain a clear comparison with N719. 223 The polypyridyl complexes of JJ-95 and JJ-99 displayed very intense and broad absorption bands throughout the whole absorption region, and the low-energy MLCT band is red-shifted by 11 nm relative to that of N719 due to increased π-conjugation in the ancillary ligand. Cyclic voltammetry results show that the Ru(II/III) oxidation potential of JJ-95 is more positive than that of JJ-99, indicating the increased electron-donating properties of the ancillary ligand in JJ-95 due to the 4-hexylstyryl group.…”

Section: Ruthenium Photosensitizers Based On Dipyridylamine Ligandssupporting

confidence: 58%

Section: Ruthenium Photosensitizers Based On Dipyridylamine Ligandsmentioning

confidence: 99%

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Influence of Ancillary Ligands in Dye-Sensitized Solar Cells

et al. 2016

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Dye-sensitized solar cells (DSSCs) have motivated many researchers to develop various sensitizers with tailored properties involving anchoring and ancillary ligands. Ancillary ligands carry favorable light-harvesting abilities and are therefore crucial in determining the overall power conversion efficiencies. The use of ancillary ligands having aliphatic chains and/or π-extended aromatic units decreases charge recombination and permits the collection of a large fraction of sunlight. This review aims to provide insight into the relationship between ancillary ligand structure and DSSC properties, which can further guide the function-oriented design and synthesis of different sensitizers for DSSCs. This review outlines how the new and rapidly expanding class of chelating ancillary ligands bearing 2,2'-bipyridyl, 1,10-phenanthroline, carbene, dipyridylamine, pyridyl-benzimidazole, pyridyl-azolate, and other aromatic ligands provides a conduit for potentially enhancing the performance and stability of DSSCs. Finally, these classes of Ru polypyridyl complexes have gained increasing interest for feasible large-scale commercialization of DSSCs due to their more favorable light-harvesting abilities and long-term thermal and chemical stabilities compared with other conventional sensitizers. Therefore, the main idea is to inspire readers to explore new avenues in the design of new sensitizers for DSSCs based on different ancillary ligands.

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Section: Ruthenium Photosensitizers Based On Dipyridylamine Ligandssupporting

confidence: 58%

Section: Ruthenium Photosensitizers Based On Dipyridylamine Ligandsmentioning

confidence: 99%

Influence of Ancillary Ligands in Dye-Sensitized Solar Cells

et al. 2016

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“…The result shows that the power conversion efficiency of N3s varied from 4.54 to 5.92%. From the different efficiencies, we expect that it could affect from a different solubility of N3 dyes [13,14]. With these results in hand, we want to answer "Why our N3s show different efficiency?"…”

Section: Resultsmentioning

confidence: 99%

Comparison of the DSSC Efficiency on Synthetic N3 Dyes

Talodthaisong

Wongkhan

Sudyoadsuk

et al. 2015

AMR

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Abstract. Cis-di(thiocyanato)-bis(4,4'-dicarboxy-2,2'-bipyridine) ruthenium(II) (N3) has been used as the standard complex in the dye-sensitized solar cells (DSSCs). This research studies the N3s which are commercial (N3-1) and synthesized (N3-2 to N3-5) in DSSC as the dyes sensitizer. We found that the varied power efficiencies were observed from 4.54 to 5.92%. The TGA and FT-IR techniques were employed to measure the small molecules that cannot identify by NMR spectra. The results clearly seen that the N3s have a different content in water and methanol residuals which affect the N3s solubility leading to the varied performance in DSSCs.

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“…Numerous attempts have been made to molecularly engineer ruthenium sensitizers to broaden the absorption band and increase the molar extinction coefficient. One successful approach taken by various authors has been the functionalization of one arm of the 4,4'-dicarboxylic 2,2'-bipyridyl anchoring ligands in the N3 ruthenium sensitizer with different arrays of highly conjugated ancillary ligands, for example, 2-hexylthiophene ( HRS-1 ) [3,50], dialkylaminobenzene [51], alkyl bithiophene [52], alkoxybenzene, 2-(4- tert -butyloxyphenyl)ethylene [53,54], dipyridylamine [55], 3,4-ethylenedioxy- thien-2-yl)vinylene [56], 3,5-di- tert -butylbenzene [57], and 4,4-bis(4- tert -butylstyryl) [58], to form new ruthenium(II) polypyridyl dyes in order to enhance both the molar extinction coefficient and red-shift of the metal-to-ligand charge transfer (MLCT) wavelength of the complexes for the DSSCs application. The high molar extinction coefficients and red shift results obtained from such molecular designs were adduced to the extension of the π-conjugation in the complexes due to the introduction of these various groups.…”

Section: Syntheses and Trends In Dye Sensitizer Developmentmentioning

confidence: 99%

Towards the Development of Functionalized PolypyridineLigands for Ru(II) Complexes as Photosensitizers inDye-Sensitized Solar Cells (DSSCs)

Adeloye

Ajibade

2014

Molecules

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A number of novel ruthenium(II) polypyridine complexes have been designed and synthesized for use as photosensitizers in dye-sensitized solar cells (DSSCs) due to their rich photophysical properties such as intense absorption, long-lived lifetimes, high emission quantum yields and unique redox characteristics. Many of these complexes exhibit photophysical behavior that can be readily controlled through a careful choice of ligands and/or substituents. With this perspective, we review the design and general synthetic methods of some polypyridine ligands based on bipyridine, phenanthroline, terpyridine and quaterpyridine with/without anchoring groups with a view to correlate functionality of ligand structures with the observed photophysical, electroredox and power conversion efficiency of some examples of Ru(II) polypyridyl complexes that have been reported and particularly used in the DSSCs applications. The main interest, however, is focused on showing the development of new polypyridine ligand materials containing long-range electron transfer motifs such as the alkenyl, alkynyl and polyaromatic donor functionalities.

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A new ruthenium sensitizer containing dipyridylamine ligand for effective nanocrystalline dye-sensitized solar cells

Cited by 10 publications

References 33 publications

Influence of Ancillary Ligands in Dye-Sensitized Solar Cells

Influence of Ancillary Ligands in Dye-Sensitized Solar Cells

Comparison of the DSSC Efficiency on Synthetic N3 Dyes

Towards the Development of Functionalized PolypyridineLigands for Ru(II) Complexes as Photosensitizers inDye-Sensitized Solar Cells (DSSCs)

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