The essence of the rapid development of photovoltaic industry is the reduction of kilowatt-hour cost. In the past ten years, the photovoltaic industry has undergone mono-polycrystalline transformation, introduced diamond wire cutting, double-sided technology, half-sheet technology, multi-main gate technology, gradually larger size, and other technological innovations, all of which are essentially to reduce the kilowatt-hour cost.
In the future, the component size will be limited and gradually stable. To further reduce the KWH cost, improving the battery efficiency will become the main way.
After 5 years of development, #P-type #PERC battery has gradually approached the theoretical efficiency limit. At present, the mass production efficiency of the production line is about 23%, and the theoretical limit efficiency is 24.5%. The future improvement space is limited, and it is extremely difficult to improve.
#N-type #TOPCon technology has up to 28.7% efficiency ceiling, has a huge potential for development, and N-type TOPCon technology has low attenuation, low power temperature coefficient, high double-sided rate, high low light response ability and other excellent characteristics, is the "14th Five-Year plan" photovoltaic industry development of the core technical route. At present, the mainstream manufacturers began to focus on the layout of the technical route.
Recently, the conversion efficiency of 182N-type high-efficiency monocrystalline silicon cell (TOPCon) independently developed by Zhejiang Jinkosolar Co., Ltd #jinkosolar. has been certified by the third party test of the Chinese Academy of Econometric Sciences. The conversion efficiency of the full-area cell reaches 26.1%, which again sets a new record for the conversion efficiency of large-area N-type single crystal passivation contact (TOPCon) cells of 182 and above size #182cells.
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