What is the photovoltaic effect?

The photovoltaic effect is a process that generates voltage or electric current in a photovoltaic cell when it is exposed to sunlight. It is this effect that makes solar panels useful, as it is how the cells within the panel convert sunlight to electrical energy. The photovoltaic effect was first discovered in 1839 by Edmond Becquerel.

How does a solar PV system work?

Solar PV panels – convert sunlight into electricity. Inverter – this might be fitted in the loft and converts the electricity from the panels into the form of electricity which is used in the home. Generation meter – records the amount of electricity generated by the solar PV system.

Where does the photovoltaic effect occur?

The photovoltaic effect occurs in solar cells. These solar cells are composed of two different types of semiconductors - a p-type and an n-type - that are joined together to create a p-n junction. To read the background on what these semiconductors are and what the junction is, click here.

How do solar panels work?

Solar panels work by converting the light radiation from the sun to Direct Current (DC) electricity through a reaction inside the silicon layers of the solar panel. The sun’s energy is absorbed by PV cells, which creates electrical charges that move in a current. We will look at the following vital aspects of solar panels in this discussion:

Why are solar panels afected by shading?

The performance of a solar PV system is afected by shading of the solar panels. This could be from trees or bushes, dirt or leaves on the solar panels, or shadows from chimneys or other buildings.

What are PV panels & how do they work?

PV panels convert the sun’s rays into electricity, which can be used immediately or stored in batteries for later use. This eliminates the need to purchase expensive utility-supplied electricity from traditional sources like coal-fired power plants and nuclear facilities.