Pengaruh Agen Pengikat Silang dan Waktu Polimerisasi Poli Asam Tanat pada Efisiensi Dye Sensitized Solar Cell (DSSC)

Abstract

Dye sensitized solar cell (DSSC) is a device that can convert light energy into electrical energy. The research of DSSC continues to look for DSSC with high efficiency values. The efficiency of DSSC is influenced by many things, one of them is the ability of the dye to absorb light energy.The dye used in this research was poly tannic acid obtained from the polymerization process of tannic acid. This polymerization was carried out to improve the ability of the dye to absorb sunlight. The polymerization of tannic acid was carried out using a crosslinking agent (TMPGDE) by varying the polymerization time and the crosslinking agent. TiO2 / Cu paste was made using the sol gel method and coated on ITO glass using the doctor blade method. The layer was immersed in dye while the counter electrode was made with a candle flame. DSSC was assembled to form a sandwich structure and electrolyte was dropped in the gap of the two electrodes. DSSC measured the voltage generated with a multimeter.The results of the UV-Vis analysis on the polymerized dye showed a bathochromic shift and an increase in the absorbance value. The results of FTIR analysis on polymerized dyes appeared ether groups in the range 1050-1250cm-1. The presence of this ether group indicates the formation of tannic acid poly. The highest DSSC efficiency found from the polymerized dye was 7.69% with a polymerization time of 14 hours and the volume of crosslinking agent (TMPGDE) 115µL.