Thiocyanate-free ruthenium(ii) sensitizers with a bi-imidazole ligand in dye-sensitized solar cells (DSSCs)

2017 ◽  
Vol 41 (14) ◽  
pp. 6272-6277 ◽  
Author(s):  
Saba Ashraf ◽  
Javeed Akhtar ◽  
Humaira M. Siddiqi ◽  
Ahmed El-Shafei
Keyword(s):  
Solar Cells ◽  
Dye Sensitized Solar Cells ◽  
Ancillary Ligand ◽  
Dye Sensitized ◽  
Imidazole Ligand ◽  
Sensitized Solar Cells

In this study, tris-heteroleptic Ru(ii) sensitizers denoted as SD-15 and SD-16 with a 4,4′,5,5′-tetramethyl-1H,1′H-2,2′-bis-imidazole moiety as the ancillary ligand were designed, synthesized and characterized.

scholarly journals Bis-tridentate Ru(ii) sensitizers with a spatially encumbered 2,6-dipyrazolylpyridine ancillary ligand for dye-sensitized solar cells

RSC Advances ◽  
2017 ◽  
Vol 7 (67) ◽  
pp. 42013-42023 ◽  
Author(s):  
Ting-Kuang Chang ◽  
Yun Chi
Keyword(s):  
Solar Cells ◽  
Dye Sensitized Solar Cells ◽  
Charge Recombination ◽  
Ancillary Ligand ◽  
Dye Sensitized ◽  
Dye Loading ◽  
Sensitized Solar Cells

The sensitizer TF-tBu_C3F7 has shown the highest overall efficiencies of JSC = 18.47 mA cm−2, VOC = 767 mV, FF = 0.71 and PCE = 10.05% under simulated one sun irradiation, due to the fine balance between dye loading and reduced charge recombination.

Imine–carbene-based ruthenium complexes for dye-sensitized solar cells: the effect of isomeric mixture on the photovoltaic performance

2020 ◽  
Vol 44 (47) ◽  
pp. 20568-20573
Author(s):  
Yogesh S. Tingare ◽  
Chaochin Su ◽  
Ming-Tai Shen ◽  
Sheng-Han Tsai ◽  
Shih-Yu Ho ◽  
...  
Keyword(s):  
Solar Cells ◽  
Photovoltaic Performance ◽  
Dye Sensitized Solar Cells ◽  
Ruthenium Complexes ◽  
Ancillary Ligand ◽  
Isomeric Mixture ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

New isomeric sensitizers containing an imine–carbene (IC)-based ancillary ligand, isomers IC101 and IC102, were designed for application in dye-sensitized solar cells (DSSCs).

Influence of brominated-TPA-stilbazole based ancillary ligand on the photocurrent and photovoltage in dye-sensitized solar cells

2018 ◽  
Vol 150 ◽  
pp. 347-353 ◽  
Author(s):  
Saba Ashraf ◽  
Rui Su ◽  
Javeed Akhtar ◽  
Humaira M. Siddiqi ◽  
Ahmed El-Shafei
Keyword(s):  
Solar Cells ◽  
Dye Sensitized Solar Cells ◽  
Ancillary Ligand ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

scholarly journals Synthesis and Study of the Physical and Photovoltaic Properties of Novel Heteroleptic Ruthenium(II) Complexes Ligated with Highly π-Conjugated Bipyridine Ancillary and Phenanthroline Anchoring Ligand for Dye-Sensitized Solar Cells

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Hyejeong Lee ◽  
Jinhyung Seo ◽  
Mingyeong Jeong ◽  
Seo Yeong Na ◽  
Byoungchoo Park ◽  
...  
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Methoxy Group ◽  
Power Conversion ◽  
Dye Sensitized Solar Cells ◽  
Ancillary Ligand ◽  
Photovoltaic Properties ◽  
Ancillary Ligands ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Six new heteroleptic ruthenium(II) complexes (JM1–JM6), each bearing a highly π-conjugated bipyridine ancillary ligand (a methoxy-substituted analog (L1) and a phenanthroline-type anchoring ligand (L2) (dcphen or dcvphen; [Ru(L)2(NCS)2][TBA]2; L1 = 4,4′-bis{2-(3,4-dimethoxyphenyl)ethenyl}-2,2′-bipyridine (dmpbpy), 4,4′-bis{2-(1,1′-biphenyl)-4-ylethenyl}-2,2′-bipyridine (bpbpy), or 4,4′-bis{2-(4′-methoxy-[1,1′-biphenyl]-4-ylethenyl}-2,2′-bipyridine (mbpbpy); L2 = 4,7-dicarboxy-1,10-phenanthroline (dcphen) or 4,7-bis(E-carboxyvinyl)-1,10-phenanthroline (dcvphen)) were synthesized, and their physical and photovoltaic properties were investigated. Various dye-sensitized solar cells (DSSCs) were fabricated using heteroleptic ruthenium(II) complexes. Ruthenium(II) complex JM1, ligated to dmpbpy (ancillary) and dcphen (anchoring) ligands, exhibited the maximum power conversion efficiency (PCE) value of 3.40%, which was approximately 71% of the efficiency exhibited by the commercially available N719-sensitized solar cells. Ruthenium(II) complex JM5, ligated to mbpbpy (ancillary) and dcphen (anchoring) ligands, exhibited the second-best PCE value (2.52%), and ruthenium(II) complex JM3, ligated to bpbpy (ancillary) and dcphen (anchoring) ligands, exhibited a PCE value of 1.45%. It was observed that the PCE values of the DSSCs could be significantly improved by introducing the electron-donating methoxy group at proper positions of the ancillary ligands present in the heteroleptic ruthenium(II) complexes (such as JM1 and JM5).

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