The effect of immersion temperature using chlorophyll sensitizer (Amaranthus hybridus L.) on the performance of dye-sensitized solar cells

摘要

This article investigated the effect of immersion temperature on the TiO_2 film using chlorophyll extract for dye-sensitized solar cells (DSSC). The chlorophyll was extracted from spinach leaves with ethanol solvent. The solution of spinach extract was used for the immersion process on the TiO_2 film. The immersion temperatures were varied of 283 K, 303 K and 323 K. The optical properties of TiO_2/dye films were analyzed by UV-Vis and Fourier Transform Infrared (FTIR) spectrophotometers. The DSSCs performance were characterized by I-V meter. The highest absorbance was revealed from the immersion temperature of 303 K. Characteristic of FTIR spectra resulted a maximum transmittance of 67.2% at the frequency peak of 3341 cm~(-1). Additionally, these results directly proportional with the maximum performance of DSSC at immersion temperature of 303 K. The best performance of DSSCs was obtained the V_(oc), I_(sc), and conversion efficiency values of 0.43 V, 0.16 mA and 0.04%, respectively.