| By now you would have heard about photovoltaic | | | | This barrier works until the sunlight affects the solar cell |
| solar panels. This is the element in a solar panel which | | | | and produces more electrons. These electrons |
| generates electricity. This is based on a particular | | | | created with the help of sunlight are filled with lots of |
| phenomenon whereby electrons are agitated by the | | | | energy and they are capable of breaking the barrier |
| suns rays. The phenomenon is known as the | | | | between the junctions. After this the electrons again |
| photovoltaic effect. In this phenomenon some materials | | | | start passing across the junctions. This is the process |
| tend to produce certain amount of electric currents | | | | through which the photovoltaic solar panels work. |
| when they get exposed to some light. The source | | | | The photovoltaic solar panels can easily become your |
| used for this purpose is usually sunlight. | | | | solar power generator. You can use solar energy for |
| The process was developed and discovered by a | | | | various purposes. You might have learned a lot about |
| scientist Edmund Becquerel. This was in the year 1839. | | | | solar energy and its uses in high school. This used to |
| The photovoltaic solar panels include a series of PN | | | | be an important chapter in physics. This is why almost |
| junctions that are semiconductors by nature. These | | | | all of us know about building solar panels. The sunlight |
| junctions have two parts. One part is deficient in | | | | actually contains photons. |
| electrons and the other part is rich in electrons. There | | | | These photons are usually filled with energy. This |
| is a photovoltaic cell present in your DIY solar panel. | | | | energy actually hit the solar cells and then they get |
| This cell is designed in such a way that it creates an | | | | absorbed. There are various uses of the solar panels. |
| electric field. | | | | You can even reduce your electricity bill with the help |
| The electric field is created across the present junction | | | | of these solar panels. You either need to purchase a |
| that is between the two parts of the crystal. At this | | | | solar panel for yourself or you can even build them at |
| point of time the electrons present in the cell moves | | | | home. |
| from the electron rich part to the electron deficient | | | | You can even use the system to charge batteries and |
| part. The two sides of the crystal are known as the p | | | | even for powering the motor. All these things become |
| type and the n type. There is a barrier between these | | | | easy with the photovoltaic solar panels. These panels |
| two sides. This barrier prevents more electrons from | | | | might look very simple but they are usually a little |
| moving across the two sides of the crystal. | | | | complex when they are operated. |