Solar colored lights

Solar panels are what kind, when it comes to solar street light panels, we think of is most easily monocrystalline silicon panels and polycrystalline silicon panels, it is more commonly used. So is there any other types, we take a look at. A, monocrystalline silicon solar



solar cell' Solar cell is also known as 'solar cells' or 'cell', is a kind of electricity generation by using sunlight directly photoelectric semiconductor wafer. 】 Panels are what kind, said to solar street light panels, everybody is the most easy to think of monocrystalline silicon panels and polycrystalline silicon panels, it is more commonly used. So is there any other types, we take a look at.

a, monocrystalline silicon solar cells Monocrystalline silicon solar cells, and is of high purity silicon rods for raw materials of solar cells, and is the fastest development of a solar cell. 】

photoelectric conversion efficiency of monocrystalline silicon solar cells' The photoelectric conversion efficiency, namely the incident monochromatic photons - Electronic conversion efficiency ( 单色入射光子- - Electron conversion efficiency, abbreviations IPCE) , defined as the unit of time in the internal and external circuit and per unit time the number of the electrons produced can be the ratio of the number of photons incident monochromatic Np. The mathematical expression formula, IPCE = 1240 Isc/( l Pin) Isc, l and Pin, the use of units of mu A cm - respectively 2, the nm and W m - 2. 】 About 15%, the highest of 24%, this is all kinds of solar cells photoelectric conversion efficiency highest, but the production cost is very big, it is not widely used.

2, polycrystalline silicon solar cell' Polycrystalline silicon solar cells, monocrystalline cells with high conversion efficiency and long life and material preparation technology of amorphous silicon thin-film batteries relative to simplify the advantages of a new generation of battery, its conversion efficiency of 17 - general 18%, slightly lower than that of single crystal silicon solar cell, there is no obvious efficiency decline, and possibly on the cheap substrate material preparation, the cost is far lower than the single crystal silicon battery, and efficiency higher than that of amorphous silicon thin-film batteries. 】

polysilicon solar cell' One of the solar cell. 】 The making craft of with monocrystalline silicon solar cell' Monocrystalline silicon solar cell is the fastest development of a solar cell, its composition and production process has to finalize the design, the products have been widely used in space and ground facilities. 】 About the same, but the polycrystalline silicon solar battery photoelectric conversion efficiency is to reduce a lot, the photoelectric conversion efficiency is about 12% less. In terms of production cost is cheaper than monocrystalline silicon solar cells, the material is simple, save power consumption, the total production cost is low, so get a lot of development.

3, amorphous silicon solar cells which is a new thin-film solar cells appear early 【 Solar cells can effectively absorb solar energy and convert it into a power semiconductor components. 】 Processes, its advantage is greatly simplified, silicon material consumption are rare. But the biggest drawback is main problems of crystalline silicon solar cell is a photoelectric conversion efficiency is lower light pole offer, the current international advanced level to reach 10%, and unstable, the longer the time, conversion efficiency, the greater the attenuation.