Photovoltaic (pv) power generation principle, advantages and disadvantages of is what?

Photovoltaic power generation is a kind of green cleaning power, village district ecological environment is weak, a photovoltaic power generation is maintaining the village environment, more promoted the green agriculture production and the construction of the beautiful village. Income from household photovoltaic power station construction, is still an

photovoltaic power generation is a driving force of the green cleaning. The ecological environment of the village is very fragile. The development of photovoltaic power generation not only protect the environment of the village, and also promoted the construction of green agricultural production and beautiful village. Increase revenue both domestic photovoltaic power station construction and development of other forms of photovoltaic power station, can get subsidies, increase their income. To help the poor photovoltaic simple operation, stable income. For poor rural families have no Labour force, they have a stable source of income. Alleviate human against photovoltaic agricultural greenhouse light complementary power generation and fish projects using agricultural greenhouse roof and the surface of the water, do not take up the ground, don't change of land use nature, thus saving land resources. Can change a huge increase in population and the amount of effective arable land, play a positive role. Pv projects, on the other hand, on the basis of the original agriculture plough, land quality is good, is advantageous to the development of modern agriculture projects, develop modern agriculture and agribusiness is beneficial to the second and third industry and the cohesion of the first industry. And can directly increase the local farmers' economic income. The invention of the sensitive environmental sensitive to create a suitable for different crop growth environment. In different light transmittance of solar panels installed on agricultural greenhouses, can meet the demand of different crops daylighting, can cultivate organic agricultural products, precious trees and various high value-added crops, can complete the anti-season cultivation and a fine. Satisfied with the agricultural power roof power generation using can satisfy the power demand of agricultural greenhouse, such as temperature control, irrigation, lighting, etc. And it also can be used to power interconnection to the grid, so as to complete earnings and earnings is created for the contribution to the company. Open up new ways of agricultural compared with traditional agriculture, pay more attention to scientific and technological elements of investment, pay more attention to management, pay more attention to the improvement of quality of workers. As a new form of agricultural production and operation, with the promotion and application of agricultural science and technology in the region of the securities market, through the completion of agricultural science and technology and agricultural industrialization, it will become the regional pillar industries of agriculture and increase farmers' income. Beautiful new rural photovoltaic power generation is a driving force of the green cleaning. The ecological environment of the village is very fragile. The development of photovoltaic power generation not only protect the environment of the village, and also promoted the construction of green agricultural production and beautiful village. Photovoltaic power generation is the main principle of the photoelectric effect of the semiconductor. When photons illuminate metal, its energy can be absorbed by the electrons in a metal completely. Electronic absorption energy is enough big, can overcome the internal force of the metal work, and escape from the metal surface become photoelectron. The silicon atoms has four external electronic. If pure silicon doped with five external electron atoms, such as phosphorous, it becomes a kind of n-type semiconductor. If pure silicon doping has three external electron atoms, such as boron atoms, p-type semiconductors are formed. When the P and N together, contact surface will form a potential difference, become a solar cell. When sun exposure to the p-n junction, hole empty from polar mobile P to N poles, electrons to move from the N pole area to polar form the current P.