Why the PERC photovoltaic solar photovoltaic application technology popular?

Because the battery has a multilayer, solar photovoltaic web, photovoltaic (pv) grid, in the PERC need more steps in the production of photovoltaic cells, leading to higher costs. PERC is an innovative battery and component assembly. Second, caused by light attenuation ( 盖子) Impact. Specifically, CGNPC 603 mw, guangzhou development of 410 mw, 345 mw in energy saving, solar panels can how much money a jin group, 220 mw, the people vote for a 200 mw, 190 mw hubei energy group, huaneng 180 mw photovoltaic solar net news: at present, the system engineering 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. Therefore, the light has a second chance to produce optoelectronic. Among them, the solar net, EPC project owner units is given priority to with soe/state, this also reflected from the side, in project bidding and parity, the state-owned enterprises has become the absolute main force.

conventional BSF cell due to the back surface of the metal aluminium film layer in the composite speed cannot be dropped to below 200 cm/s, which arrived in 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; Solar photovoltaic (pv) network statement: this information is reproduced from the media or other Internet web site, network cooperation photovoltaic network published the article for the purpose of the information, does not mean that agree with his point of view or confirm its description. Through any battery does not produce electronic light will be reflected this layer medium. But the PERC technology by enclosed medium passivation layer on the back of the battery, can greatly reduce the loss of photoelectric, by raising the photovoltaic battery photoelectric conversion efficiency of 1% or so. 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. Designers can use fewer components to achieve the total power output, and covers an area of less. For component manufacturers, transferred to the PERC technology production line just minimum modification to the existing battery production line, solar portal, you can easily produce the high quality product, solar power network, without having to pay a large amount of capital to update existing equipment thoroughly. Due to the high doping level PERC battery, so after using the PERC technology, light attenuation to the negative effect will increase. The PERC biggest difference is that with conventional battery back to dielectric film coated, using local metal contact, greatly reduce the back surface recombination velocity, while increasing the back surface of the light reflection. Power per unit area is higher, the PERC components under the condition of weak light and high temperature performance is good. So, what is the PERC technology? In traditional photovoltaic cells, aluminum metallized layer, it on the back of the battery contacts across the region. To enhance the efficiency of the current favorable situation, the PERC increased faster than the cost, the cost of raw materials is declining, and the trend shows that the PERC will replace the traditional battery structure. The article content is for reference only. Light attenuation refers to the components for the first time to power loss percentage after exposed to light. World famous energy-saving building the PERC cells originating 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. 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. PERC battery, for the preparation of the photolithography, evaporation, photovoltaic components heat oxygen passivation, such as electroplating technology. Photons to battery and electronics, the electrons are only to the top layer to generate electricity.

in 1999, the laboratory research of PERC batteries have a conversion efficiency of 25% of the world record. First, the higher the cost. PERC technology between batteries and aluminum layer adds a thin layer of dielectric layer. According to the analysis, the PERC components over the next three years the market share will rise sharply, the mainstream products. 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. Do cabinet diagonal technique this paper statistics September to today's release of a total of 2. 85 gw pv power plant EPC and 1. 9 gw component bid opening information. Considering the total generating capacity rather than peak power, obviously the PERC component is superior. Systems engineering at present, the price of the PERC pv modules for around 2 yuan per watt.