STUDY OF ELECTRONIC JUNCTION IN SOLID ELECTROLYTE DSSC WITH N-I-P STRUCTURE OF TIO2-DYE-EB/KI/I2
Polyaniline is a hole transport material and p-type semiconductor which has the potential of replacing the liquid electrolyte in DSSC as a solid electrolyte. In the present study, the use of solid electrolyte is aimed to address some of the deficiencies that are common in a liquid electrolyte such a...
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| Format: | Final Project |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/33683 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Polyaniline is a hole transport material and p-type semiconductor which has the potential of replacing the liquid electrolyte in DSSC as a solid electrolyte. In the present study, the use of solid electrolyte is aimed to address some of the deficiencies that are common in a liquid electrolyte such as leaks of solvent, solvent evaporation, dye desorption from TiO2, electrode corrosion, and overcome the limitations of conventional DSSC caused by the low diffusion rate of redox couple ions. The solid electrolyte of polyaniline synthesized through oxidative polymerization of aniline with ammonium persulfate initiator, which is then doped with KI/I2. Characterizations of the solid electrolyte material polyaniline was using AC Impedance Spectroscopy, Infrared Spectroscopy, UV-Vis Spectroscopy and Raman Spectroscopy. DSSC fabrication consists of five phases, namely the manufacture of TiO 2 thin film as a working electrode, adsorption Dye (purple cabbage extract and N719) on TiO2 thin films, manufacturing ES thin film as the counter electrode, electrolyte deposition above TiO2-Dye thin films and the assembly of the two electrodes with electrolyte in between. DSSC characterizations were carry out using a solar simulator and AC impedance spectroscopy. Modification of polyaniline doped KI/I2 gave the effect to conductivity, photon absorption and chemical structure. DSSC systems that have been successfully fabricated shown photocurrent, using either natural purple cabbage extract or synthetic Dye N719. The photocurrent response generated by DSSC systems influenced by contact between two electrodes. Device DSSC system with solid electrolyte given heat treatment at various temperatures of 20, 50, 75, 100 and 150 °C for 30 minutes gave an optimum cell efficiency at 75 °C, This cell shows a decline in efficiency 8.65 x 10-4 (%) min-1 under exposure of solar simulator radiation for 60 minutes |
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