The current new energy photovoltaic power generation will cause pollution?

Light pollution problems put forward by the international astronomical community in the early 1930 s, they think that light pollution is city outdoor lighting makes the sky shine for astronomical observations of the negative impact. Countries such as Britain and America later called 'interference light', in Japan, known as 'light pollution

light pollution problem is put forward by international astronomers in the early 1930 s. They think that light pollution is the negative effect on the astronomical observation, this is caused by urban outdoor lighting empty sky glow. Later, Britain, the United States and other countries is called 'interference light', the Japanese called it 'light damage'. Light pollution is the waste gas, waste water, waste residue and noise after a new kind of environmental pollution, including the white light pollution, artificial daytime pollution and light pollution. Photovoltaic power generation is the use of the photovoltaic effect of semiconductor interface technology converts light energy into electrical energy. It is mainly composed of solar panels, Module) , controller and inverter. Main part is made up of electronic components. Solar cells in series after encapsulation protects form a large area of solar cells, modules, photovoltaic power generation device is composed of power controller with other parts. 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 sunlight to pn junction, an empty hole from polar mobile P to N poles, electrons from N polar moved to P polar, form a current. Photovoltaic power generation, therefore, no light pollution, but due to power generation such as photovoltaic equipment cost is high, the environmental protection, photovoltaic power generation has not yet been widely used in all countries.