A solar cell converts sunlight into electricity by using the energy from sunlight to “break away” negative charges, or electrons, in the silicon. The electrons are then collected as electricity. However, shining light on a plain piece of silicon doesn’t generate electricity, as the electrons that are released from the light do. .
The most commonly used atom to form the p-type part of the silicon, with less negative charge than plain silicon, is boron. Boron is a great atom to use as it has the exact number of electrons needed for the task. It can also be distributed very uniformly through the. .
We investigated whether solar cells made with gallium-doped silicon really are more stable than solar cells made with boron-doped silicon. To find out,. .
Boron isn’t the only element we can use to make p-type silicon. A quick perusal of the periodic table shows a whole column of elements that have one. [pdf]
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