The Basic Technology Of Solar Panels
With the advent of the Feed In Tariff, people in the UK are able to invest in the latest green technology. One part of the scheme is payment for generating electricity from photovoltaic (PV) solar panels. This technology is rapidly changing and becoming affordable for energy needs. Let's look at this technology.
Electricity in the home is AC or alternating current. The PV cells are semiconductors that produce DC or direct current electricity. The system will require a converter so the generated power can be used in the home.
The amount of energy needed will determine the amount or array of sections a home will need. A small condominium with one person will require just a few sections compared to a large residence with a family of four who may need an array of twenty or more PV sections.
A conventional PV cell is made up of an extremely thin layer of phosphorus-doped silicon (n-type) that is layered onto the top of thicker boron-doped silicon (p-type). The electrical field is generated where these two silicon layers connect. This area is called the P-N junction. As the sunlight hits the surface electrons are stimulated and are directed to an electrical load.
The output of a PV panel depends on its efficiency, size, and how much sunlight strikes its surface. Maximum sun exposure is the reason that a south-facing roof area is needed to install the system. Pay attention to trees, buildings, or other structures that may shade the roof area. Any infringement on the sun's rays will decrease the efficiency of the unit.
The PV solar panels of today are reliable and safe. The product also has a very low failure rate with a life expectancy average of twenty-five years. The FIT scheme pays tariffs for this period. With higher demand and more consumption, sun energy will only get better. Search the web for more information.