Synthesis and Characterization of an Organometallic Ruthenium Complex Bearing 4-Picolinic Acid Ligands for Dye-Sensitized Solar Cells (DSSCs)

피콜리닉산 리간드를 갖는 염료감응형 태양전지용 루테늄 염료 합성과 특성분석

  • Received : 2016.01.25
  • Accepted : 2016.02.23
  • Published : 2016.03.01


A novel heteroleptic ruthenium(II) complex bearing a 4-picolinic acid unit as anchoring ligands (trans-dithiocyanato bis(4-picolinic acid)ruthenium(II) (trans-H1)) was synthesized and its chemical structure was identified by $^1H$-NMR, FT-IR and mass spectroscopy. The optical, thermal, electrochemical and dye adsorption properties of trans-H1 dye were investigated and compared with those of the gold standard ruthenium complex, Ru(4,4'-dicarboxy-2,2'-bipyridine)$_2cis(NCS)_2$ (N3). DSSCs based on trans-H1 dyes were examined under the illumination of AM 1.5 G, $100mWcm^{-2}$ and exhibited typical photovoltaic properties with an open-circuit voltage ($V_{OC}$) of 0.46 V, a short-circuit current ($J_{SC}$) of $4.10mA{\cdot}cm^{-2}$, a fill factor (FF) of 60.4%, and a conversion efficiency (PCE) of 1.14%.


Ruthenium complex;4-picolinic acid;DSSCs (dye-sensitized solar cells);$TiO_2$ (titanium dioxides)


  1. B. O'Regan and M. Gratzel, Nature, 353, 737 (1991). [DOI:]
  2. N. Robertson, Angew. Chem. Int. Ed., 45, 2338 (2006). [DOI:]
  3. M. K. Nazeeruddin, A. Kay, I. Rodicio, R. Humphry- Baker, E. Mueller, P. Liska, N. Vlachopoulos, and M. Graetzel, J. Am. Chem. Soc., 115, 6382 (1993). [DOI:]
  4. M. Gratzel, Platinum Metals Rev., 38, 151 (1994).
  5. P. Xie and F. Guo, Curr. Org. Chem., 11, 1272 (2007). [DOI:]
  6. B. K. An, P. L. Burn, and P. Meredith, Chem. Mater.. 21, 3315 (2009). [DOI:]
  7. J. C. Benjamin, J. Thomas, and S. W. Peter, Inorg. Chem. 34, 593 (1995). [DOI:]
  8. J. G. Malecki, M. Jaworska, R. Kruszynski and R. Gil-bortnowska, Polyhedron, 24, 1445 (2005). [DOI:]
  9. J. G. Malecki, B. Machura, A. Switlicka, T. Gron, and M. Balanda, Polyhedron, 30, 746 (2011). [DOI:]


Supported by : 한국연구재단, 가톨릭대학교