SYNTHESIS OF FE3O4/ZNO FROM ZINC DROSS AS ACTIVE MATERIAL FOR DYE SENSITIZED SOLAR CELL APPLICATION

• Main Author: Listianto Raharjo, Mohammad
• Format: Theses
• Language: Indonesia
• Subjects: Teknik (Rekayasa, enjinering dan kegiatan berkaitan)
• Online Access: https://digilib.itb.ac.id/gdl/view/67953
• Institution: Institut Teknologi Bandung

The increasing demand for electrical energy and environmental issue has led to an increasing the use of renewable and environment friendly electrical energy sources. One of them is the sunlight utilization. Energy from the sunlight can be converted into electrical energy using solar cell devices. The most widely used is silicon-based solar cells with the disadvantage of high material processing cost. Many research with the aim ofsolving this problem resulting in low-cost solar cell technology, one of which is dye sensitized solar cell (DSSC) with ZnO-based semiconductor. The high band gap causes ZnO as a photoactive electrode to operate only in the visible light region. with a high band gap (?3,3eV), ZnO can only absorb light in the ultraviolet region. Fe3O4/ZnO material derived from zinc dross, the galvanization industrial waste, has a lower band gap so it can absorb visible light better than pure ZnO. XRD characterization results showed that Fe3O4/ZnO could be synthesized from zinc dross precursor by hydrometallurgical method. The SEM images showed an increase in particle size due to agglomeration after calcination process. The performance test of solar cells showed an increase in efficiency in solar cells with photoactive material Fe3O4/ZnO from zinc dross compared to pure ZnO. In addition, the presence of dye increases the efficiency and the calcination process reduces the efficiency of the solar cells is also discussed in this study.