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Why the PERC photovoltaic solar power technologies favoured

Due to the high doping level PERC battery, so after using the PERC technology, light attenuation to the negative effect will increase. Designers can use fewer components to achieve the total power output, and covers an area of less. PERC technology by raising the battery's ability to capture the light under the longer wavelength to improve efficiency, especially in the case of early in the morning and in the evening or cloudy. Power per unit area is higher, the PERC components under the condition of weak light and high temperature performance is good. PERC( PassivatedEmitterandRearCell) Called the batteries, and other Emitter and passivation on the back of the battery & throughout; From conventional aluminum back battery ( BSF) Structure naturally derived. Therefore, the light has a second chance to produce optoelectronic. Working principle of the monitoring system of photovoltaic application in where, then, what is the PERC technology? The PERC biggest difference is that with conventional battery back to dielectric film coated, using local metal contact, solar panels, greatly reduce the back surface recombination velocity, while increasing the light reflection on the surface of the back? But the PERC technology by enclosed medium passivation layer on the back of the battery, solar equipment, can greatly reduce the loss of photoelectric, by raising the photovoltaic battery photoelectric conversion efficiency of 1%. To enhance the efficiency of the current favorable situation, the PERC faster than costs increase, the descent of the cost of raw materials, solar power grid, photovoltaic (pv) where is the application and trend shows that the PERC will replace the traditional battery structure.

the PERC technology between batteries and aluminum layer adds a thin layer of dielectric layer. At present, the PERC photovoltaic module production line has become almost mainstream component manufacturer's standard, its efficiency is higher than the traditional components of 1% or more. Light attenuation refers to the components for the first time to power loss percentage after exposed to light. Working principle of the monitoring system in the traditional photovoltaic cells, with aluminum metallized layer, it on the back of the battery contacts across the region. PERC battery first originated in the 1980 s, 1989 by the university of new south wales in Australia MartinGreen team officially reported for the first time in AppliedPhysicsLetter PERC battery structure, then reach 22. 8% of the laboratory battery efficiency. First, the higher the cost. At present, the PERC photovoltaic component price is RMB 2 / watt. Longer wavelength often inspire electronic is located near the bottom of the battery, the electrons will likely to be absorbed, and could never reach the emission layer, this will only lead to component fever. According to the analysis, the PERC components over the next three years the market share will rise sharply, solar panels, the mainstream products. Photons to battery and electronics, system engineering qian xuesen the electrons are only to the top layer to generate electricity. Second, caused by light attenuation ( 盖子) Impact. PERC is an innovative battery and component assembly. In 1999, the lab research of PERC batteries have a conversion efficiency of 25% of the world record. Conventional BSF cell due to back the metal aluminium film layer on the surface of the composite speed cannot be dropped to below 200 cm/s, solar panels, led to aluminum layer of the infrared radiation of light only 60 - back 70% can be reflected, produce more photoelectric loss, therefore have inherent limitations in terms of the photoelectric conversion efficiency; Through any battery does not produce electronic light will be reflected this layer medium. Because the battery has a multilayer, in the PERC need more steps in the production of photovoltaic cells, leading to higher costs. For component manufacturers, transferred to the PERC technology production line just minimum modification to the existing battery production line can easily produce the high quality product, without having to pay a large amount of capital to update existing equipment thoroughly. Considering the total generating capacity rather than peak power, obviously the PERC component is superior. The PERC battery, for the preparation of the lithography, cold storage evaporation heat storage technology and heat oxygen passivation, such as electroplating technology.

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