A new 1H-pyridin-(2E)-ylidene ruthenium complex as sensitizer for a dye-sensitized solar cell

Sahin C., Varlikl C., ZAFER C. , Shi Q., Douthwaite R. E.

JOURNAL OF COORDINATION CHEMISTRY, vol.66, no.8, pp.1384-1395, 2013 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 66 Issue: 8
  • Publication Date: 2013
  • Doi Number: 10.1080/00958972.2013.782486
  • Page Numbers: pp.1384-1395


The new heteroleptic ruthenium(II) complex containing a 1H-pyridin-(2E)-ylidene (PYE) ligand was synthesized and characterized using UV/Vis, FTIR, and NMR spectroscopies, mass spectrometry, elemental analysis, and cyclic voltammetry. The photovoltaic performance of the ruthenium complex as a charge transfer photosensitizer in nc-titanium dioxide based dye-sensitized solar cell was studied and compared with cis-bis(isothiocyanato)(2,2-bipyridyl-4,4-dicarboxylato)(2,2-bipyridyl-4,4-di-nonyl)ruthenium(II) (Z907) under standard AM 1.5 sunlight. The complex CS90 gave a photocurrent density of 1.80mAcm(-2), 400mV open-circuit potential, and 0.58 fill factor yielding an efficiency of 0.42% where the reference Z907 yielded an efficiency of 4.12%. The decrease in conversion efficiency observed for CS90 is attributed to a steric interaction between PYE and the TiO2 surface that prevents optimum binding and also restricts ligand dynamics that are associated with oxidation state changes.