Effect of LEG4 concentration as a sensitizer on increasing efficiency in DSSC-based solar cells

This study examined the addition of synthetic dye LEG4 (DN-F05) to electrical properties. The Dye-Sensitized Solar Cell (DSSC) component to be tested is composed of FTO substrates coated by TiO2-Dye-Electrolite-Platina. The working electrode layer is Titanium dioxide (TiO2) which is deposited on the FTO substrate by the spin coating method. In order for this layer to dry it is then annealed in the furnace with a temperature of 450oC for 30 minutes. After that, the layer is soaked in dye. There are three variations of dye concentration LEG4, namely LEG4 (0.02 wt), LEG4 (0.08 wt), and LEG4 (0.1 wt) with ethanol solvent, then rotated on a stirrer hotplate for 2 hours. Another opposing electrode process is made by medically positioning liquid platinum on an FTO substrate. the counter electrode is used as a mediator. Testing the electrical properties using IPCE and I-V Meter. From this work is obtained a good efficiency in line with the decrease in dye mass concentration, i.e. 4.76%, 4.95%, 5.15%, these results are supported by IPCE test.