THE EFFECT OF DYE COFFEE SYNTHESIS ON TEMPERATURE CALCINATION TOWARD SEMICONDUCTOR PARTICLE OF ZnO - TiO2 USING SOL-GEL - SPIN COATING MATERIALS AS A SOLAR CELL Abdul Rais
Physics Department, Universiyas Negeri Medan
Abstract
A synthesis was fabricated from ZnO, TiO2, and C5H12O using thin films, KCl, and HCl electrolyte solutions as precursors. The process of making ZnO-TiO2 used the Hot Plate Stirrer Sol-Gel equipment. The results of the ZnO-TiO2 layering with FTO thin films were furnaced with calcination temperatures: 4000C, 5000C, and 6000C. Each sample was characterized by XRD, Scanning Electron Microscopy (SEM), UV-vis. and FTIR. XRD analysis characterization on TiO2 + Arabica coffee with a calcination temperature of 500o C had the highest point of 1035 as the integrated int (counts) and 100 as the intensity (counts). And the highest crystal size in ZnO + Robusta coffee is 500 C with a value of = 446. 846 Ao and the crystal size is 44.68 nm. The photon energy is found in ZnO + Robusta coffee at 400o C with a value of 3.75. 10-9 eV. The result of the SEM - EDX test, were found in ZnO + Arabica coffee at 400o C with a value of 91.57. The results of the FTIR test on ZnO + Robusta coffee 400o C have the highest transmittance value and wavelength with 3800 transmittances. 19 Ao (cm-1) and IV meters for DSSC current and voltage measurement. The results of the UV-Vis Spectrophotometer showed the ZnO-TiO2 solution dye in the visible light absorption region. The variation of the hydrolysis temperature showed that the heating of the ZnO-TiO2 affected the solar cell performance, where a temperature of 400 C has the highest efficiency value when compared to the calcination temperature of 500o C and 600o C. In this case, it influences the current and voltage or power generated. The result can provide a current of 2.5 - 4.5 mA and a maximum voltage of 3.8 eV - 8.5 eV.
Keywords: ZnO-TiO2, Dye coffee, Synthesis, C5 H12 O, Dehydrolysis, Thin Films FTO
