Optical properties of dye DN-F05 as a good sensitizer

Abstract

This research studied the effect of adding synthetic dye DN-F05 (red dye) to electrical and optical properties. Dye-Sensitized Solar Cell (DSSC) sandwich components are consist of FTO/TiO<sub>2</sub>-Dye-elektrolit-Platina/FTO. In this study, the working electrodes were made by Titanium dioxide (TiO2) which was deposited on FTO glass and then annealed at 450<sup>o</sup>C for 30 minutes. The dye concentration DN-F05 was made with a mass of 0.001 gr, then will be stirred for 2 hours into 5 ml of ethanol at a temperature of 40<sup>o</sup>C. In this study the spin coating method is used with a rotational speed of 1000 rpm for 20 seconds. Characterization of optical properties was carried out using a UV-VIS spectrophotometer to determine the absorbance curve of dye and to get Gap energy. The peak absorbance value was obtained at wavelengths between 400-700 nm. This proved that the addition of DN-F05 dye concentration has a major influence on the optical properties.

Performance analysis of Ag metal hybridized into dye LEG4 as photoanode

“…The addition of too large Ag increases the conductivity of a material, if it is associated with the energy gap, the conductor material has a small energy gap. This applies to several metals, one of which is Ag, when the conductivity of a material is higher, the conduction band and the valence band will overlap other so that it will affect the efficiency of a material [4,5].…”

“…Previous studies also reported that Dye has an important role in determining the performance of DSSC where dye acts as a photon absorber that causes electron excitation [4]. In addition, a good dye is one that has a wavelength range of 400-600 nm (visible light), capable of helping maximum photon absorption [4]. In their research [6] stated that the synthetic dye LEG4 has an absorption wavelength range between 320 nm -350 nm and 520 -580 nm.…”

“…The anatase TiO2 type is used because it provides a larger surface area than the rutile type. Therefore, a sensitizer with dye molecules that can be absorbed and can assist the excitation of the absorbed electrons from photons is needed [4]. Previous studies also reported that Dye has an important role in determining the performance of DSSC where dye acts as a photon absorber that causes electron excitation [4].…”

“…Therefore, a sensitizer with dye molecules that can be absorbed and can assist the excitation of the absorbed electrons from photons is needed [4]. Previous studies also reported that Dye has an important role in determining the performance of DSSC where dye acts as a photon absorber that causes electron excitation [4]. In addition, a good dye is one that has a wavelength range of 400-600 nm (visible light), capable of helping maximum photon absorption [4].…”

“…The various studies have been carried out to increase the efficiency of DSSC, one of which is by modifying the TiO2 semiconductor material, namely, by metal insertion. The size of TiO2 nanoparticles is about 21 nm and has a fairly large and porous surface area, it is very possible for metal insertion to increase efficiency value [4]. One of the metals that has been used for the manufacture of DSSC is Au metal but because Au has a high commercial value, silver (Ag) is used in this study [5].…”