CD Skripsi
Optimasi Waktu Penumbuhan Nanorod Zno Yang Didoping Titanium (Ti) Untuk Meningkatkan Efisiensi Dye-Sensitized Solar Cells (Dssc)
This study aims to fabricate Dye-Sensitized Solar Cells (DSSC) based on ZnO nanorods by enhancing their efficiency through titanium (Ti) doping in the active ZnO material. It also investigates the effect of varying the growth time of ZnO nanorods on DSSC efficiency. Ti-doped ZnO nanorods were successfully synthesized using a seed-mediated hydrothermal method with variations in growth time. The synthesized products were analyzed using UV-Vis spectroscopy, XRD, FESEM, EDX, and efficiency measurements, which were systematically presented. The UV-Vis characterization results showed the strongest absorption of the samples occurred in the ultraviolet spectrum at wavelengths of 300–370 nm. The highest absorption, 1.50 a.u. was observed in the sample with a growth time of 8 hours. XRD characterization results revealed diffraction peaks at 2θ angles of 31.74°, 34.46°, 36.29°, 47.57°, and 56.69°, corresponding to the crystal planes (010), (002), (011), (012), and (110), indicating that the sample has a hexagonal wurtzite structure. FESEM images showed that the ZnO nanorods have a hexagonal cross-section. EDX characterization revealed the weight and atomic percentages of Ti were 0.18% and 0.15%, respectively.
I-V cell characterization demonstrated an improvement in DSSC efficiency from undoped ZnO to Ti-doped ZnO. The efficiency of undoped ZnO was 0.012%, while Ti-doped ZnO showed increased efficiency, with the optimum efficiency of 0.802% achieved by the sample with a growth time of 8 hours.
Keywords: DSSC, ZnO nanorods, titanium doping, seed-mediated hydothermal
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