Abstract
The invention of chemically flexible solar cells, known as dye-sensitive solar cells (DSSC), has led to cheaper, more ecologically friendly, yet inefficient solar cells. The poor link between the semiconductor and the substrate, which impacts the DSSC electrons' mobility, is the root reason of the low efficiency. TiCl4 pre-coatings have been used in many studies on semiconductor engineering to boost electron mobility. In order to lower the internal resistance in the DSSC, it is known that using TiCl4 pre-coating affects the mechanical strength between the semiconductor and the substrate. TiCl4 pre-coating can be done by immersing FTO glass, where semiconductors have deposited, in the TiCl4 solution. This study examines how the TiCl4 pre-coating time in the production of TiO2 semiconductors affects DSSC performance. To reveal the effects on alterations in the semiconductor morphology of TiO2, immersion times in the TiCl4 treatment were set to 10, 20, 30, 40, 50, and 60mins. The results show that TiO2 nanoparticles with a 60min TiCl4 treatment had better connectivity between individual particles than those with shorter treatments. The performance metrics like open circuit photovoltage (Voc), short-circuit photocurrent density (Jsc), and fill factor (FF), and efficiency (η) were 0.569 V, 7,616 mA/cm2, 43.3%, and 2.208%, respectively.
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