N719 Dye

Product Code M2003A1
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Di-tetrabutylammonium cis-bis(isothiocyanato)bis(2,2′-bipyridyl-4,4′-dicarboxylato)ruthenium(II), N719 dye, is the ammonium salt of N3 dye. With changes to increase cell voltage and solubility in polar solvents comparing with N3 dye, N719 dye is also one of the most common high performance dyes that are developed for DSSC solar cells.

N719 dye has the following features:

  • Amphiphilic
  • Increased electrostatic binding onto the TiO2 surface at lower pH values
  • Incresed stability
  • Increased oxidation potential leading to deeper HOMO energy levels and enhanced stability

General Information

Full name Di-tetrabutylammonium cis-bis(isothiocyanato)bis(2,2′-bipyridyl-4,4′-dicarboxylato)ruthenium(II)
Synonyms N719 standard Dye
Chemical formula C58H86N8O8RuS2
Molecular weight 1188.55
CAS number 207347-46-4
HOMO / LUMO HOMO = -6.01 eV, LUMO = -3.64 eV [1]
Solubility Ethanol or acetonitrile/tert-butanol (1:1, v:v)
Classification / Family Transition metal complex, Ruthenium complex, Bipyridyl ligands, Energy materials, Dye-sensitized solar cell (DSSC) materials, Donor materials, OPV materials.
n719 dye
Chemical structure of N719 Dye; Chemical formula: C58H86N8O8RuS2

Product Details

Purity  >97%
Melting point 250 - 260 °C
Appearance Brownish-red (maroon) crystalline powder

MSDS Documentation

N719 Dye MSDSN719 Dye MSDS Sheet

Literature and Reviews

  1. All-solid-state dye-sensitized solar cells with high efficiency, I. Chung et al., Nature, 485, 486–489 (2012); doi:10.1038/nature11067.
  2. Amphiphilic Ruthenium Sensitizers and Their Applications in Dye-Sensitized Solar Cells, C. Klein et al., Inorg. Chem., 43 (14), 4216–4226 (2004); DOI: 10.1021/ic049906m.
  3. Energy barrier at the N719-dye/CsSnI3 interface for photogenerated holes in dye-sensitized solar cells, J. Zhang et al., Sci. Reports 4, 6954 (2014); doi:10.1038/srep06954.
  4. Effect of dye concentration on electron injection efficiency in nanocrystalline TiO2 films sensitized with N719 dye, R. Katoh et al., Chem. Phys. Lett., 511 (4-6), 336-339 (2011); doi:10.1016/j.cplett.2011.06.046.

To the best of our knowledge the technical information provided here is accurate. However, Ossila assume no liability for the accuracy of this information. The values provided here are typical at the time of manufacture and may vary over time and from batch to batch.