CD Skripsi
Pengaruh Penambahan Silika Sebagai Penghambur Terhadap Efisiensi Dye Sensitized Solar Cells Berbasis Material Aktif Zno
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ABSTRACT
Dye Sensitized Solar Cells (DSSC) is one type of alternative solar cells to produce a low cost solar cells with high efficiency. The modifications were carried out in this research by adding Silica (SiO2) with variations in size (nano silica and micro silica) to the active material of ZnO and various precursors (Zinc Acetate Dihydrate and Zinc Nitrate Hexahydrate). The method used in the synthesis of ZnO was the hydrothermal method, while the method used in the manufacture of silica was by precipitation and mechanical methods. DSSC fabrication was made with a sandwich structure with a coating on the working electrode using the Doctor Blade method. The synthesis results were analyzed using Particle Size Analyzer (PSA), UV-Vis Spectroscopy, X-Ray Diffraction (XRD), Scanning Electron Microscope (SEM), Energy Dispersive X-Ray (EDX), and I-V characterization. PSA testing proved the size of Nano SiO2 is smaller than its of Micro SiO2. The UV-Vis absorption spectra showed strong absorption of the sample occurred in the wavelength range of 200-372 nm with the optimum absorption was produced by the Micro SiO2/ZnO sample (ZAD precursor) of 8.56 a.u. which has the lowest band gap energy of 2.75 eV. The crystal structure in the form of hexagonal wurtzite with the highest peak intensity was found at the crystal plane (011) in Micro SiO2/ZnO (ZAD Precursor). SEM photograph showed surface morphology in the form of nanoparticles and nanoflowers. The EDX spectrum proved that the samples contained O, Si, and Zn. The highest DSSC efficiency in the ZAD precursor occurred in the Micro SiO2/ZnO sample (ZAD precursor) which was 0.149%, while the best DSSC efficiency using the ZNH precursor in the Micro SiO2/ZnO sample (ZNH precursor) was 0.159%.
Keywords: ZnO, SiO2, hydrothermal method, characterization of materials, DSSC
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