Turning Sun Energy into Solar Power with Pv Cells

For the past years, pv cells are being applied for solar powered calculators as well as in space prior to that. Because of the never ending discovery, pv cells are being applied in different ways today which includes powering houses. the discovery of pv cells to turn sunlight into solar powered energy, it is being applied for solar powered calculators and even in space. Currently pv cells are being applied in different ways, which includes powering houses. It is fascinating to understand the way pv cells work.

The pv cells themselves are built from a special type of material referred to as semiconductor. Silicon is frequently applied. When light hits this substance, the semiconductor takes in some of the energy.

Pv Cells work when sufficient enough energy from the sun push some electrons loose and go in similar course in the semiconductor and generates an electrical current. The next thing is by using contacts which have been attached to the pv cells and run a circuit from the top contacts, through the item to be powered, and back to the lower contacts.

Silicon is regarded as being impure as it does not allow a lot movement of electrons when in natural crystalline state. Since there are four places for electrons that could be filled, all the silicon atoms is unstable on its own. Yet, every single silicon atom is generally locked up with each other by sharing electrons on the outer balance.

A procedure known as doping or mixing is really important for the silicon material to be more conductive. It is being dope or mix in with other substance. Phosporous is applied to come up with an N-type silicon. N-type silicon has five electrons in its outer ring, so when it mates up with the silicon atoms surrounding it, there’s one free electron per phosphorous atom.

P-type silicon however is created when silicon is mixed with boron. Given that it merely has three electrons in its outer shell. It leaves a hole, which is a place where an electron can jump in for every single atom of baron. Making use of both P-type and N-type silicon is key to utilizing silicon in pv cells.

The 2 types of silicon are setup side-by-side. At first, the electrons and holes close to the shared border fill in extremely fast. Then, equilibrium is reached when the electrons can no longer interact in that way.

An electric field is created separating the two halves. In this field, it is easy for electrons to go from the P-side to the N-side. Electrons on the N-side cannot make it over to the P-side. This creates a one-way flow of electrons.

Photons are units of energy from the sun. Photons keep the energy flowing by clashing with the atoms of the solar cell and releasing electrons and holes. Electric current is then established by the motion of electrons from hole to hole. The field created at the site of the N-type and P-type silicon junction helps to make the voltage that wraps up the power picture.

Making use of the sun’s energy by using pv cells is still fairly new. Apart from solar energy, pv cells are being applied in more and more applications, both residential and commercial. The procedure involved in pv cells are reasonably easy to fully grasp by anyone that can spend some time to understand about them. The use of pv cells puts solar powered energy within reach.

Michael Porterfield is an expert blogger and writer who specialises in renewable energy, thermodynamics, solar panels as well as other latest sources of energy for a better life. Visit Solar Energy Power, Alternative Source of Energy

Posted under Renewable Energy

This post was written by editor on April 17, 2012

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