The use of 2,6-bis (N-pyrazolyl) pyridine as an efficient dopant in conjugation with poly(ethylene oxide) for nanocrystalline dye-sensitized solar cells

Ganesan, S.; Bhagavathiachari, Muthuraaman; Madhavan, J.; Mathew, Vinod; Maruthamuthu, P.; Suthanthiraraj, S. Austin

doi:10.1016/j.electacta.2008.05.071

Cited by 38 publications

(21 citation statements)

References 24 publications

(24 reference statements)

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“…The original DSSC used an organic liquid electrolyte, which helped to establish a record conversion efficiency [2,3], but also brought about a problem of long-term instability due to the leakage and volatilization of the electrolyte. To solve this problem, many attempts have been made to replace the liquid electrolyte by polymer electrolyte [4], hole-transporting materials [5][6][7], or other solid state ionic conductors [8,9]. However, the conversion efficiencies of these DSSCs using the solid electrolytes were considerably smaller, obviously due to lower ionic conductivity of the solid electrolytes and imperfect contact at the electrolytes/electrodes interface [10].…”

Section: Introductionmentioning

confidence: 98%

An efficient and nonflammable organic phosphate electrolyte for dye-sensitized solar cells

Jiang

Cao

et al. 2009

J Appl Electrochem

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A new fire-retardant, diethyl ethyl phosphate (DEEP), was tested as a nonflammable electrolyte solvent for dye-sensitized solar cells (DSSCs). Electrochemical measurements demonstrated that the DEEP electrolyte has a wide potential window ([5 V), sufficient ionic conductivity (3.5 9 10 -3 S cm -1 at 25°C), and electrochemical activity for the I À =I À 3 redox couple. The DEEP-based DSSCs exhibited an open circuit voltage of 0.72 V, short circuit photocurrent of 10.45 mA cm -2 , and a light-to-electricity conversion efficiency of 4.53%, which are almost the same as those observed from the DSSCs using currently optimized organic carbonate electrolytes. Meanwhile, the longterm stability of the DSSCs was greatly improved with the use of the DEEP electrolyte, showing a potential application of this new electrolyte for the construction of efficient, stable, and nonflammable DSSCs.

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Section: Introductionmentioning

confidence: 98%

An efficient and nonflammable organic phosphate electrolyte for dye-sensitized solar cells

Jiang

Cao

et al. 2009

J Appl Electrochem

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“…Here the molecular iodine forms a chargetransfer complex with lone pair of electrons in PYR which enhances the open-circuit voltage and short-circuit current density of the solar cell [15][16] . In general PVDF is a semicrystalline polymer and incorporation of pyrazole (PYR) into blended polymer electrolyte complex produces immense structural changes within the polymer electrolyte whereas pyrazole being a pyridine derivative has more number of nitrogen atoms which can easily interact with I 2 thereby decreasing the sublimation of I 2 to a significant extent 17 . An optimum performance of 5.5% efficiency is obtained for the solar cell device assembled with the blended polymer electrolyte sample containing x = 0.016 PYR.…”

Section: Conductivity Datamentioning

confidence: 99%

Performance Characteristics of Pyrazole as an Effective Dopant in a Blended Polymer Electrolyte for Nanocrystalline Dye-Sensitized Solar Cell Applications

Amudha¹,

Suthanthiraraj²,

Maruthamuthu³

2013

Chem Sci Trans

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Thin films of nanocomposite blended solid polymer electrolyte consisting of polymethyl methacrylate (PMMA)/polyvinylidene fluoride (PVDF), potassium iodide (KI) and iodine (I 2 ) as redox couple and pyrazole (PYR) as dopant were prepared using solution casting technique. The consequences of inclusion of PYR within PMMA/PVDF/KI/I 2 were investigated in terms of photovoltaic performance of the cell whereas the PYR impregnated polymer electrolyte solution when introduced into dye-sensitized solar cells (DSSCs) exhibited an overall energy-conversion efficiency of 5.5% at room temperature under AM1.5 illumination.

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“…In this case, however, L 27 improves the DSC performance by reducing the polymer crystallinity, and by interacting with the TiO 2 electrode 15 surface rather than the soluble ruthenium complex dye. 126,127 Electropolymerisation of [Ru(terpy)(L 24 )][PF 6 ] 2 yields a luminescent, semiconducting polymer film whose broad visible absorption may make it suitable for photovoltaic applications. 30 A [ReBr(CO 3 )] adduct of a related dithienyl-3-bpp derivative, whose 20 3-bpp fragment is only bidentate, is also strongly emissive.…”

Section: F-block Complexesmentioning

confidence: 99%

Recent advances in the synthesis and applications of 2,6-dipyrazolylpyridine derivatives and their complexes

Halcrow

2014

New J. Chem.

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Developments in the chemistry of 2,6-di(pyrazol-1-yl)pyridine (1-bpp) and 2,6-di(pyrazol-3-yl)pyridine (3-bpp), their derivatives and their complexes are surveyed, with emphasis on the last eight years. Particular advances include the synthesis of multi-functional spin-crossover switches; the incorporation of emissive f-element podand centres into biomedical sensors; the self-assembly of a variety of functional soft materials and surface structures; and, the use of 3-bpp complexes in catalysis.

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The use of 2,6-bis (N-pyrazolyl) pyridine as an efficient dopant in conjugation with poly(ethylene oxide) for nanocrystalline dye-sensitized solar cells

Cited by 38 publications

References 24 publications

An efficient and nonflammable organic phosphate electrolyte for dye-sensitized solar cells

An efficient and nonflammable organic phosphate electrolyte for dye-sensitized solar cells

Performance Characteristics of Pyrazole as an Effective Dopant in a Blended Polymer Electrolyte for Nanocrystalline Dye-Sensitized Solar Cell Applications

Recent advances in the synthesis and applications of 2,6-dipyrazolylpyridine derivatives and their complexes

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