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http://dx.doi.org/10.4313/JKEM.2016.29.3.192

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

Jung, Hye-In (Department of Chemistry, The Catholic University of Korea)
An, Byeong-Kwan (Department of Chemistry, The Catholic University of Korea)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.29, no.3, 2016 , pp. 192-197 More about this Journal
Abstract
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%.
Keywords
Ruthenium complex; 4-picolinic acid; DSSCs (dye-sensitized solar cells); $TiO_2$ (titanium dioxides);
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