The photovoltaic energy group led by the researcher Han Peide of the Institute of Semiconductors of the Chinese Academy of Sciences, with the support of national vertical funding and self-financing, aimed at the needs of photovoltaic enterprises. , The local back-side doping technology and other advantages, developed a solar cell with a high efficiency of 20.0% 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 the Chinese Academy of Metrology.
Driven by the photovoltaic movement with Chinese characteristics, monocrystalline silicon / polycrystalline silicon solar cells will enter the third-generation battery category described by Martin A. Green as the first-generation battery identity (end of this year) (that is, photoelectric conversion efficiency ≥20%, Electricity cost ≤.5 / W, manufacturing cost ≤ $ 100 / m2), the dominant position of monocrystalline silicon / polycrystalline silicon solar cells in photovoltaic energy will remain unchanged for a long time. Because of this, improving the efficiency of monocrystalline silicon cells, forming independent intellectual property rights, and leading the development of photovoltaic enterprises are of even greater strategic significance.
In response to the current photovoltaic trough industry situation, the research group proposed the twelve-word policy of "improving efficiency, re-detection, reducing costs, and promoting application" as a guide for the group's daily work, and strive to take a R & D path that integrates with the needs of enterprises . The next step will continue to improve battery efficiency, meanwhile conduct pilot tests on existing technologies, and promote and apply them on production lines.
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