Comparison of the DSSC Efficiency on Synthetic N3 Dyes

Abstract

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.

A Varied Alkyl Chains of Ruthenium(II) Complexes for Dye Sensitized Solar Cells (DSSCs)

“…The complexes were synthesized form one-pot reaction via the ligands exchange between Ru-cymene, N,N ligands, 2,2'-bipyridine-4,4'-dicarboxylic acid (dcbpy) and NH 4 SCN in DMF, respectively [9,10]. The crude reactions were dissolved in tetrabutyl ammonium base and purified on Sephadex LH-20 with methanol as an eluent (Scheme 1).…”

Investigating the Effects of Fluorine Substituents on Organic Dyes in Dye-Sensitized Solar Cells

“…The dyes of the DSSC play an important role in the efficiency of the solar cells and all the dyes should have photophysical and electrochemical properties such as luminescent, covering the ultraviolet-visible spectra to the near-infrared region, and hydrophobic properties to enhance the stability of the solar cells (14). Two types of dyes can be used as an active layer in DSSC; the first type is an organometallic dye, such as Ru-family complexes (N3, N719, and C101), (15)(16)(17) These have many advantages such as stability in the oxide state, gave instance charge transfer from metal to the ligand in the visible region and effective charge injection to the nanosemiconductor layer. The limitation of the organometallic dye is related to the cost of novel metal, low extinction coefficients, and decomposition or isomerization during purification (18,19).…”

“…Five dyes with different fluoro substitutions (13)(14)(15)(16)(17) were prepared according to Scheme 1. These dyes were synthesized by using two simple steps involving the Suzuki cross-coupling reaction the and Knoevenagel condensation reaction.…”

“…The first step was represented by a Suzuki cross-coupling reaction between 4-Bromo-N, N-dimethylaniline, and boronic acid derivatives (1-5) by using Pd(dppf)Cl2 as a catalyst and this reaction gave a good yield (~ 60%-70%). The next step was obtained with a Knoevenagel condensation reaction to prepare the final compound (13)(14)(15)(16)(17). The reaction was performed between aldehyde derivatives (7)(8)(9)(10)(11) and cyanoacetic acid with a small amount of piperidine as a catalyst and the yields of final products were rounded between ~ 62%-78%.…”

“…Shows the optical and theoretical parameters of the dyes(13)(14)(15)(16)(17). Maximum of absorption in THF (1 × 10 -4 M), b extinction coefficient, c optical energy gap, and d theoretical calculation.…”