Fabrication and optimization of homojunction photoanodes-based dye-sensitized solar cells

Today, when fossil resources are exhausted and energy needs increase day by day, interest in new energy sources and renewable energy resources has increased considerably. Furthermore, the growing global population, industrialization, and the negative effects of human hunger are manifesting themselves as an increase in greenhouse gas emissions, global warming, water pollution, and air pollution. Although the yields of existing solar cells are modest, the poisonous gases and production costs during production are a large dead end. At this point, third-generation solar cells grow. These batteries have a low recycling cost, and the cost is quite promising in terms of performance. Painted solar cells, one of the third-generation solar cell technologies, stand out with a low cost, low toxicity, and a simple production process. In the thesis study, the blocking layer and the key parameters affecting dye-sensitized solar cells efficiency, including porous TiO2 and electrolyte, were studied. A strategy has been developed to increase the open circuit voltage and short circuit current together. A blocking layer has been produced using TiCl3-based solutions optimized for production parameters. The efficiency is optimized with electrolytes used frequently in the literature for the final cell. Initially obtained, the battery's JSC value was approximately 10 percent, the VOC value was approximately 20 percent, and total cell performance was increased by approximately 80 percent to 8.03 percent. As a result, dye-sensitized solar cells are a promising renewable energy technology with great potential to reduce production costs and increase the efficiency of solar batteries. With ongoing research and development, dye-sensitized solar cells can eventually become the most cost-effective solar cells available on the market.