The Effect of Solar Cell Surface Area when Coated with Titanium on Current Intensity, Voltage and Efficiency

الملخص

The aim of the research is to study the electrical circuit variables and the performance efficiency of solar cells with different surface areas when these cells were coated with titanium solution. The surface area of ​​the first cell was 5.88 cm², the surface area of ​​the second cell was 6.09 cm², and the surface area of ​​the third cell was 7.04 cm². The surfaces of all cells were coated with titanium solution and each one was connected to an electrical circuit containing a rheostat, ammeter and voltmeter. Each cell was illuminated with a light intensity of 0.55 MW/cm2 perpendicular to the surface. The values ​​of the current intensity, voltage and open circuit voltage were recorded. The charge density in the closed circuit and the efficiency of the cell performance were calculated and the average for each variable was taken. The results showed that the cell with an area of ​​5.88 cm² recorded a current intensity of 8.65 mA, the cell with an area of ​​6.09 cm² recorded 7.867 mA, while the cell with an area of ​​7.04 cm² recorded 3.933 mA as the lowest value. The cells of 5.88 cm², 6.09 cm² and 7.04 cm² recorded a voltage of 0.0538 mV, 0.0534 mV and 0.0532 mV respectively. The highest voltage value was recorded by the cell The area was 5.88 cm2, while the lowest value was recorded by the cell with 7.04 cm². The highest open circuit voltage value was 0.0544 mV and was recorded by the 5.88 cm² cell and the lowest value was 0.0541 mV and was recorded by the 7.04 cm² cell. The 6.09 cm² cell recorded 0.0543 mV. The 5.88 cm2 cell recorded the highest charge density value in the closed circuit and was 1.86 coulomb/s. The 6.09 cm² and 7.04 cm² cells recorded 1.62 coulomb/s and 0.70 coulomb/s. The 5.88 cm² cell and the 6.09 cm2 cell showed the highest performance efficiency and were 1434.0 and 1247.0 while the 7.04 cm2 cell showed 0.05370.0 as the lowest efficiency. It is concluded from the study that the cell surface area inversely affects the current intensity, voltage, open circuit voltage and charge density. Closed circuit charge and cell efficiency, further research is recommended to study the effect of coating solar cells with different types of other materials on the circuit parameters and cell efficiency.