Zhongdian Photovoltaic Battery Conversion Efficiency reaches 20.44%
China National Electric (Nanjing) Photovoltaic Co., Ltd. as the main undertaking unit of the national 863 project in the field of energy photovoltaic industry major project "the efficiency of more than 20% based on high-performance back-field and back passivation technology of crystal silicon battery industrialization of key technologies and demonstration production line "The overall goal is to master the complete sets of major processes and core equipment technologies for crystalline silicon solar cells with an efficiency of more than 20%, build an efficient crystalline silicon solar cell demonstration production line with independent intellectual property rights, and form a batch product." Recently, the project's battery conversion The efficiency achieved a new high, reaching 20.44%.
According to the research team's introduction, the conversion efficiency of the battery is tested in the company. The calibration standard is the standard of the Fraunhofer ISE (Fraunhofer ISE). The project is currently in preparation for mass production. The efficiency of 20.44% is just a start. It is expected that the efficiency of the battery will enter a period of rapid growth in the next three months.
This kind of battery uses a brand-new battery structure design, uses the ordinary solar grade silicon slice, on the basis of the ordinary battery production line, only has increased two kinds of equipments to be able to complete the production. This product adopts the traditional screen printing technology and realizes the basic requirements of high efficiency, high stability and high power output of crystalline silicon solar cells without using higher-level silicon wafers. The technology's component products enable customers to save costs and reduce the use of space, especially for applications such as building integrated roofs.
CLP's 863 project plans to produce more than 20% of the battery's conversion efficiency by the end of 2014, reduce the cost of power generation, and increase the cost competitiveness of photovoltaic power generation and conventional thermal power. This is of great significance for firmly grasping the commanding position of the future energy industry, forming core competitiveness in domestic and foreign markets, and promoting the rapid and healthy development of the country's new energy.
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