The purpose of this experiment was to understand A. the relationship between light intensity (how close we held the flashlight) and voltage output and B. the relationship between the wavelength of light (different colors) and the voltage output of the cell. We used a program to measure the voltage for about 30 seconds and we averaged those results for each round.
First, we compared the effect of the distance of the flashlight to the voltage output. The first measurement we did was holding the flashlight right on the solar cell (0 CM distance) where we got the highest voltage output. Next we continued to measure the voltage by holding the flashlight 2 centimeters further from the solar cell each experiment.
With these results we were able to confirm that the higher the intensity (the closer we held the flashlight) the higher the voltage output. As intensity was lowered so was the voltage output.
Next, we compared the effect of having different wavelengths; by putting different colored film filters on the solar cell and holding the flashlight directly on it (with 0 cm distance). Again, we held the flashlight on each different film for about 30 seconds where the program calculated results and we used the average for each color to compare.
With these results we noticed that the pink color filter was the one that resulted in the highest voltage. The next highest voltage was the blue. I am surprised that pink is the highest and red is the lowest, since the two colors are so similar. I would expect these two colors to be close in the amount of voltage output.