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Pengaruh Waktu Annealing Lapisan Tipis ZnO Terhadap Efisiensi Sel Surya Dye Sensitized Solar Cells (DSSC)
Abstract
Telah diteliti pengaruh lama annealing lapisan tipis ZnO terhadap efisiensi Dye Sensitized Solar Cells. Lapisan ZnO yang ditumbuhkan kemudian di-annealing menggunakan furnace. Annealing dilakukan pada temperatur 450o C dengan durasi 1 - 5 jam. Lapisan ZnO yang terbentuk dikarakterisasi menggunakan I-V Test, UV-VIS, dan XRD. Karakterisasi I-V menunjukkan bahwa efisiensi tertinggi 1,98% didapatkan pada sampel yang di-annealing selama 5 jam yang menghasilkan Voc 263 mV, Isc 0,274 mA, Pmax 27,05 μW, dan Fill Factor (FF) 0,37 ketika diiluminasi dengan intensitas cahaya 300 lux. Energi gap yang didapatkan dari karakterisasi UV-VIS sebesar 3,37 – 3,49 eV, sesuai dengan energi gap lapisan ZnO. Karakterisasi XRD menunjukkan bahwa struktur yang dihasilkan pada waktu annealing 2 jam adalah cubic dan pada waktu annealing 5 jam adalah hexagonal. Efisiensi tertinggi dihasilkan pada elektroda kerja lapisan ZnO yaitu sebesar 1,98% pada annealing 5 jam sedangkan efisien terendah 0,69% yaitu pada annealing 1 jam. Hasil ini menunjukkan bahwa lama waktu annealing mempengaruhi efisiensi DSSC.
The effect of annealing time on ZnO thin film of the Efficiency of Dye- Sensitized Solar Cell has been investigated. The grown ZnO films were annealed in a furnace for 1 - 5 hours at a temperature of 450oC. The deposited ZnO films were characterized using the I-V test, UV-VIS, and XRD. The I-V test shows that the highest of efficiency value of 1.98% was obtained for the sample annealed 5 hours with Voc 263 mV, Isc 0,274 mA, Pmax 27,05 μW, and Fill Factor (FF) was 0,37 when illuminated with 300 lux light intensity. The bandgap width obtained from UV-Vis spectra is 3,37 – 3,49 eV, which agrees with the energy gap of ZnO film. The XRD characterization indicated that the ZnO annealed for 2 hours has a cubic structure, while that was annealed for 5 hours is hexagonal. The highest efficiency of DSSC with ZnO electrode layer was 1.98% obtained for the sample annealed for 5 hours, whereas the lowest efficiency 0.69% was obtained for the sample annealed for 1 hour. This result indicates that longer annealing time increases the efficiency of DSSC
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DOI: https://doi.org/10.25077/jfu.10.1.90-95.2021
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