History, Development and Future of Photovoltaic Technology
According to the size and diameter of silicon wafers on the market, there are eight types in total, namely: M0, M1, M2, M4, G1, M6, M10, and G12. The margins are 156mm, 156.75mm, and 156.75mm. mm, 161.7mm, 158.75mm, 166mm, 182mm, 210mm.
From the technology and cost control, the increased the size of silicon wafer can reduce the electric cost and the cutting times, dilute the non-silicon cost of the cell, and thereby reduce the manufacturing expense of silicon wafer, which is in line with the development trend of reducing cost and improving efficiency of the photovoltaic industry.
Monocrystalline silicon wafers become the mainstream of the market.
At the same time, the wafer thinning trend is also accelerating.
The principle of photovoltaic cell technology, that is, the photovoltaic effect, that is, due to light, a potential difference is generated between different parts of the semiconductor material, forming a voltage, and then forming a current circuit. It is the basis of photovoltaic power generation technology that converts solar light energy into electrical energy, converts photons into electrons, and converts light energy into electrical energy.
The development of photovoltaic industry battery technology has gone through multiple stages. The key to iterative development of battery technology in the future is also to start with improving photoelectric conversion efficiency and reducing optical and electrical loss rates.
From 2005 to 2018, BSF batteries, that is, aluminum back field batteries, were the mainstream first-generation photovoltaic battery technology.
Since 2016, the market share of the second-generation monocrystalline P-type PERC and PERC+ cells has gradually increased, and they have become mainstream products with economical efficiency in the market.
In the future, our attention will gradually turn to N-type battery technologies represented by TOPCon, HJT, and IBC, which will gradually become the mainstream development direction of the industry's next-generation high-efficiency crystalline silicon batteries.
