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What is the solar photovoltaic
The sun is a natural source of energy. Every living thing has the ability to function, and even then it's survival, is due to the energy from the sun directly or indirectly. Our earth is from the sun is about one hundred million miles. It intercepts radiant energy less to be hardly worthy of belief (about 10 million in three), a little energy is so small, in fact, than the whole world at present existing power generation capacity is one hundred thousand times as big as the. At present all over the world, especially the developed industrial countries began to feel energy shortage, therefore, people turn to solar energy, in order to solve the energy crisis. (solar http://www.hulaoguan.com)
Unlimited supply of solar energy every day, but also a huge number. If used in large power plant, reducing the greenhouse effect, some energy experts and environmental experts believe that, for the satisfaction of human future energy needs, thermal effect of solar energy is much smaller than any other alternative heat effect. As a kind of no environmental pollution, and inexhaustible new energy, it is everywhere. Especially in the power supply capacity, some experts believe that solar power will eventually be in power supply accounted for 20%.
Solar energy is a kind of radiant energy, solar power generation means -- to convert sunlight directly into electricity, it must depend on the energy converter can convert into electric energy. Energy directly into electrical energy conversion process precisely should be called the photovoltaic effect. Do not need to use any other mechanical components, light energy is the electronic semiconductor devices, so they generate electricity. This transforms light energy into electrical energy is the energy converter, solar cell. The solar cell is also the same with the transistor, is composed of semiconductor components. It is the main material of silicon, there are also some other alloy. For high purity silicon solar cell manufacturing, after purification treatment of special production. Solar cell as long as the sun or light, will be able to transform the solar energy into electric energy, so the current from one side to the other side, generally can issue the equivalent of the received 10~20% electricity to light. In general, the light is stronger, the more electricity generated. In order to make solar panels to minimize light reflection, to convert light energy into electric energy, generally in the above covered it on a layer can prevent light reflection film, so that the surface of solar panels is purple. Its working principle is based on the semiconductor pn junction photovoltaic effect. The so-called photovoltaic effect is when an object is affected by light, an effect of the charge distribution inside the object changes arising from electric potential and current. When the PN junction solar light or other light semiconductor pn junction, will appear in the both sides voltage (called photovoltage). This phenomenon is known as the photovoltaic effect. The short circuit current of PN junction, will produce.
Solar power has the advantages of: solar cell can be set up when not in use in the roof space,, no noise, long service life, and once set almost do not need to be adjusted. Now as long as the roof lined with solar cells, can realize home electricity self-sufficiency. The main use of the solar energy is no longer a small scale, by its very nature, is a professional. It from the military field, communication field to the city construction field has played an important role in. Venezuela also launched low-cost solar car, European scientists have developed a solar light can be worn on the body of the. At present, the use of solar energy has a huge space for development, the technology has the potential to achieve a breakthrough in a short period of time. It has been in many developed countries as an important part of its energy strategy. (solar http://www.hulaoguan.com)