Synthesis And Photovoltaic Properties Of Triphenylamine Dyes And Cobalt Complex

With the development and progress of society, the demand for energy is also growing. Due to excessive exploitation of traditional energy and waste of resources, the energy crisis has restricted the development of the modern world economy. Solar energy is a green energy and safety, no pollution. Solar cell (Solar cells) is a kind of light energy into electrical energy of optical devices. And the dye-sensitized solar cell (Dye-sensitized solar cells, DSSC) the characteristics of low price, fast preparation, long service life, paid attention to by scientists, is regarded as one of the most promising solar cell.In this paper, three aniline as starting material, through NBS bromination, Suzuki, Stille, Vilsmeier and Knoevenagel condensation reactions, two with cyanoacetic acid as electron acceptor sensitizing dyes were synthesized (XS51-52), with three aniline dye is the first power supply group, Hexyloxy benzene second power supply group, using thiophene and thiophene (EDOT) epoxy for conjugated bridge. Synthesis of2,2’-bipyridine (bpy),1,10-phenanthroline (phen) and pyrazole (PZ) cobalt electrolyte ligand connected, the two kinds of dyes and the two electrolyte ligands and their intermediates were hydrogen spectrum and carbon spectrum characterization. The synthetic dye and electrolyte applied to dye-sensitized solar cells, a detailed study on the optical properties, electrochemical properties and photovoltaic performance.Dye XS51and XS52have two peaks in300nm-500nm,600nm has the obvious fluorescence emission spectra. The electrochemical performance test of two kinds of dyes and their display, titanium dioxide level matched with sensitizer under. Results of research, the photovoltaic performance of dye-sensitized solar cells of dye XS51and based on XS52, in the same electrolyte, dye XS52EDOT as the short circuit current density dye XS51conjugated bridge and open-circuit voltage than the EDOT-thiophene is higher, this may be due to both conjugated thiophene ring torsion angle is different.2,2’-bipyridine-pyrazole (bpy-pz) cobalt electrolyte synthesis of the open circuit voltage up to853mV, but the short circuit current is not high, this may be with electrolyte levels. In order to phenanthroline as ligand cobalt electrolyte, the total photoelectric dye XS51conversion efficiency reached4.34%; the short-circuit current density (Jsc) of7.55mA cm-2, open circuit voltage (Voc) for833mV, the fill factor (FF)0.67.