Photovoltaic Energy Group led by Han Peide, a researcher at the Institute of Semiconductors, Chinese Academy of Sciences, with the support of national vertical funds and self-raised funds, aimed at the needs of photovoltaic companies. After years of hard work, they integrated incident light reduction technologies, passivation technologies, and selective emitters. With the advantages of technology and partial backside doping technology, a solar cell with a high efficiency of 20.0% was developed on a single crystal silicon substrate (short circuit current density JSC=43.9mA/cm2, open circuit voltage VOC=602mV, fill factor FF=0.758), And certified by China Institute of Metrology. With the promotion of photovoltaic movement with Chinese characteristics, monocrystalline silicon/polycrystalline silicon solar cells will enter the third-generation battery category described by Martin A. Green (the end of the year) as the first generation battery (ie, the photoelectric conversion efficiency is ≥20%, Power costs ≤ $0.5/W, manufacturing costs ≤ $100/m2, and the dominant position of monocrystalline/polycrystalline silicon solar cells in photovoltaic energy will remain unchanged for a long time. For this reason, it is of great strategic importance to increase the efficiency of single-crystal silicon cells, form independent intellectual property rights, and lead PV companies to move forward. In response to the current situation in the photovoltaic industry, the research group proposed the "Twelve-word approach to efficiency, re-inspection, cost reduction, and application promotion" as a daily work guide for the group and strived to develop a research and development road that combined with the company's needs. . The next step will continue to improve battery efficiency, while conducting pilot tests on existing technologies and promoting and applying them on the production line. Fake Razor Wire,Cheap Fake Razor Wire,Razor Wire Shunxing Hardware Wire Mesh Co., Ltd. , http://www.rywiremesh.com