High performance dye-sensitized solar cells containing 1-methyl-3-propyl imidazolinium iodide-effect of additives and solvents
Journal
Journal of Electroanalytical Chemistry
Journal Volume
633
Journal Issue
1
Pages
146-152
Date Issued
2009
Author(s)
Abstract
In this work, the influences of redox electrolyte, additives and solvents on the photovoltaic performance of dye-sensitized solar cells (DSSCs) containing 1-methyl-3-propyl-imidazolinium iodide (MPII) as the electrolyte were investigated. An optimum conductivity of 20.31 mS cm-1 for 0.6 M MPII in acetonitrile (AN) was found out from the conductivity measurement. Diffusion coefficient of I3- and photocurrent density (JSC) of the DSSC varied with concentration of I2. Among the different inorganic and organic iodides as additives, the DSSC showed high performance with lithium iodide (LiI) and tetrabutylammonium iodide (TBAI), respectively. The performance of the DSSCs with different solvents was studied. From the EIS studies, it was inferred that the poor conversion efficiencies of the DSSCs were associated with high charge transfer resistance, noted along the TiO2/solvent interface. A high conversion efficiency of 6.7% (JSC of 14.8 mA cm-2, VOC of 0.74 V, fill factor (FF) 0.62 under one sun (AM 1.5)) was obtained for the DSSC containing the electrolyte composition of 0.6 M of MPII/0.2 M of LiI/0.06 M of I2/0.5 M of TBP in AN along with the incorporation of light scattering particles (TiO2 of 300 nm). © 2009 Elsevier B.V. All rights reserved.
Subjects
1-Methyl-3-propyl imidazolinium iodide; Additives and solvents; Dye-sensitized solar cell; Redox behavior
SDGs
Other Subjects
Acetonitrile; Cell membranes; Charge transfer; Conversion efficiency; Electrolysis; Electrolytes; Ion exchange; Photoelectrochemical cells; Photovoltaic cells; Solar power generation; Solvents; 1-Methyl-3-propyl imidazolinium iodide; Charge transfer resistance; Concentration of; Conductivity measurements; Different solvents; Diffusion Coefficients; Dye-sensitized solar cell; Dye-sensitized solar cells; EIS studies; Electrolyte compositions; Fill factor; High conversion efficiency; Imidazolinium; Lithium iodide; Photocurrent density; Photovoltaic performance; Redox behavior; Redox electrolytes; Scattering particles; Tetrabutylammonium; TiO; Solar cells
Type
journal article