In this work, high-performance dye-sensitized solar cells (DSSCs) based on new low-cost visible nickel complex dye (VisDye), TiO 2 nanoparticle/nanotube composites electrodes, carbon nanoparticles counter electrodes, and ionic liquids electrolytes have been fabricated. The electronic structure, optical spectroscopy, and electrochemical properties of the VisDye were studied. Experimental results indicate that it is beneficial to improve the electron transport and power conversion efficiency using the nickel complex VisDye and TiO 2 nanoparticle/nanotube composites. Under optimized conditions, the solar energy conversion efficiencies were measured. The short-circuit current density (J SC ), the open-circuit voltage (V OC ), the fill factor (FF), and the overall efficiency (h) of the DSSCs are 10.01 mA/cm 2 , 516 mV, 0.68, and 3.52%, respectively. This study demonstrates that the combination of new VisDye with TiO 2 nanoparticle/ nanotube composites electrodes and carbon nanoparticles counter electrodes provide a way to fabricate highly efficient dye-sensitized solar cells in low-cost production.
Key indicators: single-crystal X-ray study; T = 294 K; mean (C-C) = 0.005 Å; R factor = 0.033; wR factor = 0.082; data-to-parameter ratio = 15.7.In the title compound, [LaCl 3 (C 12 H 8 N 2 ) 2 (C 3 H 7 NO)]Á-2C 3 H 7 NO, the La III ion is eight-coordinated by four N donors from two 1,10-phenanthroline ligands, one O atom from one N,N-dimethylformamide molecule and three chloride anions. In the crystal structure, the La III mononuclear units are linked to form a chain along the a axis by weak C-HÁ Á ÁCl hydrogen bonds. The chains are crosslinked to form a two-dimensional network parallel to the ab plane bystacking interactions between the phen rings [centroid-centroid seperations range from 3.589 (2) to 3.708 (2) Å ]. 157
In the title centrosymmetric binuclear AgI complex, [Ag2(NO3)2(C12H10N4)2], each AgI center is coordinated by one pyridine and one benzotriazole N-donor atom of two inversion-related 2-(3-pyridylmethyl)-2H-benzotriazole (L) ligands, and an O atom of a coordinated NO3
− anion in a distorted T-shaped geometry. This forms a unique box-like cyclic dimer with an intramolecular non-bonding Ag⋯Ag separation of 6.327 (2) Å. Weak intermolecular Ag⋯O(nitrate) interactions [2.728 (4) and 2.646 (3) Å] link the binuclear units, forming a two-dimensional network parallel to (100). Intermolecular C—H⋯O hydrogen-bonding interactions, involving the L ligands and the coordinated NO3
− anions, link the sheets, forming a three-dimensional framework.
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