PV also known as solar cells, convert sunlight directly into electricity. Therefore, the PV is characterized by convert a large number of absorbed light on the Earth from solar radiation to electrical energy.

1. Photocell is a light irradiation under the force of semiconductor components. There are many different types of light batteries, used a battery-ray selenium, silicon photovoltaic cells and curing thallium, silver sulfide, such as batteries. The main instrument for the automation and remote telemetry connection. Some of PV solar energy can be directly into electrical energy, which is also called the PV solar cells. Solar energy as widely used in the way of man-made satellite, a lighthouse, weather station etc.

2. Photocell is a special kind of semiconductor diodes, visible light can be converted into direct current. Some light battery can be light and infrared light into direct current. PV solar power system is an integral part of the solar power system to replace the present power in the area of energy is an increasingly important position. PV is the first to use the doped silicon oxide to produce, doping is designed to influence or e-hole. Other materials, such as the CIS, CdTe and GaAs, also has been used as a development of the PV material. There are two basic types of semiconductor materials were called positive-type (or P type) and negative-type (or N type). In a PV cell, these materials put together by thin, and they called the PN junction of the actual festival. In this way the structure, PN section exposed to visible light, ultraviolet or infrared light, when the PN-ray irradiation to the festival, in the PN section of the produce on both sides of the voltage, so connected to the P and N-type material on the electrode material There will be between the current through. A PV cell can be connected together to form the solar module, or ranks of the panel. Can be used to generate electricity is PV cell photoelectric Voltmeter. Photoelectric volts of one of the major advantages is no pollution, only the sun and the device can work. Another advantage is that solar energy is limitless. Once Voltmeter photovoltaic system installed, it can offer in the next few years to provide energy without having to spend, and need only minimal maintenance. In 1839, Antoine Stone - Becquerel to create the first light of the battery. Becquerel is a cylindrical batteries containing lead nitrate solution, a solution of lead anode and a cathode copper oxide. Such a battery by sunlight, it will supply current. In 1875, Werner technicians Germany - Siemens is the first made of selenium photocell and proposed for the determination of the amount of light. Siemens is based on the PV in 1873 the British found Smith's "photoelectric effect". LH Adams in 1876 pointed out that the role of selenium in the light, not only the emergence of resistance change, but under certain conditions there force, which found that the "barrier effect." Barrier effect become the basic principles of PV. PV is widely used in automatic control technology, information and electronic measurement techniques. About the performance of these components since 1950, as a result of advances in semiconductor technology development has been significantly improved.

From "light" to achieve "energy" that is the more practical method.

PV (Solar Cell) structure Single PV

PV as the "Sandwich (Sandwich)", is outside the two-layer security , in the middle of the floor is the main, from Silicon (Silicon) composition of the material. Silicon atoms in the "outer orbit around the electronic (Orbit electron)" relatively loose, easily "hit (Bombard)" out. It silica and the use of "Semiconductor (transistor)" to consider the same. Then, "Si" are everywhere, and cheap, and "Properties" stable. Light  (Light) from "Photon (Photon)" continuously since the sun (Sun) to radio. There are white, "red, orange, yellow, green, blue, indigo, violet," 7-color frequency (Frequency) "optical components (component light)". Present-day business, "photocell" rely on "red light frequency." The battery light on the surface, so that only "red light", he will be reflective light out. "Sub-red light (Red light Frequency)" "Si" in the "e-track (Orbit Electron)" released by the wire lead to a converter (Inverter *), the direct current into alternating current (Alternating Current). This AC power supply and power companies, "lighting" and "hot water" and "cooking", and so on ... to use.

"Rectifier (Rectifier)" on the device, and so on. Rectifier can be direct current into alternating current. Each day, "lead to" not use up all the electricity and sell back to power companies. No electricity at night, the power companies to buy! In this way, with the roof, "photocell" in the family, the monthly payment of only limited electricity. Home negative be greatly reduced.