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Solar Energy Science Fair Project

Comparing Solar Cells

Comparing Solar Cells | Science Fair Projects | STEM Projects
Are you curious about which type of solar cell is more efficient? Let's find out by comparing a dye-sensitized solar cell and a silicon based solar cell. We'll measure the open circuit voltage and short circuit current of each cell to see which one produces more power.


The hypothesis is that silicon based solar cells are more efficient than normal silicon based solar cells, and are therefore able to produce more power, with the same amount of light.

Method & Materials

You will assemble a dye-sensitized solar cell, measure the open circuit voltage and short circuit current, and then repeat the measurements with a silicon based solar cell.
You will need two glass plates, a digital multimeter, an ammeter, ethanol, an eye dropper, titanium dioxide solution, raspberry juice, a pencil, iodide solution, tissue paper, a small plate, two jumper wires with crocodile clips, two binder clips, and a silicon solar cell from an old calculator.


The results show that the silicon based solar cell has a higher open circuit voltage and short circuit current compared to the dye-sensitized solar cell. This proves that the hypothesis is true and that silicon based solar cells are more efficient than normal silicon based solar cells.

Why do this project?

This science project is interesting because it compares two types of solar cells to see which one is more efficient. It also uses simple materials that are easy to find and inexpensive.

Also Consider

Experiment variations include using different fruit juices such as blueberry or cranberry juice, and repeating the experiment using a larger glass slide.

Full project details

You can find additional information and details for this science fair project here. Have fun exploring!

Related videos

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