a solar panel is made up of individual solar cells, when light hits these cells one layer of the silicon become s positive and the other becomes negative, why will this create and electrical field.
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Hey Tim, I’m not sure the phrase you are looking for is, “Electric Field.” Specifically, a solar, or photovoltaic cell works by using two layers of silicone glued together with a conductive epoxy. One layer is doped with boron, the other with phosphorous. When the photons strike the cell, a reaction occurs that forces free electrons from one layer onto the other, and a voltage is induced. This voltage, which is always 1/2 volt, is much like the voltage that is stored in a capacitor. A field is induced in a conductor when you have current flow. Of course if you connect a completed panel to a load and put it in the sun, current will flow out of each cell and through the wiring to the load, but the action, or photovoltiac effect, only applies to the reaction that creates a voltage, or potential between the two layers of silicone.
If you want more on this, check out the Solar Energy International website at Solarenergy.org. Take care Tim, Rudydoo