N-type cell technology can be subdivided into heterojunction (HJT), TOPCon, IBC and other technology types. Currently, PV cell manufacturers mostly choose TOPCon or HJT to pursue mass production. The theoretical efficiency of N-type TOPCon cells can reach 28.7%, and the theoretical efficiency of heterojunction cells can reach 27.5%.
The theoretical efficiency of N-type TOPCon cells can reach 28.7%, and the theoretical efficiency of heterojunction cells can reach 27.5%. TOPCon technology is a technology based on the “N-type cell” process, and continues to develop the “tunneling through oxide layer passivation contact”.
N-type cells have many advantages, including high conversion efficiency, high bifacial rate, low temperature coefficient, no light decay, good weak light effect, and longer carrier life. N-type cell technology can be subdivided into heterojunction (HJT), TOPCon, IBC and other technology types.
This is the fundamental difference between N-type cells and P-type cells, and because of this, the open-circuit voltage and short-circuit current of N-type cells are greatly improved, resulting in higher cell conversion efficiency.
The difference between p-type and n-type crystalline solar cells The raw material that precedes the the pulling and cutting of silicon wafers is the same for both p and n-type cells. This raw silicon feedstock is “grown” into ingots ( Czochralski process) or cast as bricks and then thinly sliced. These wafers form the basis of a solar cell.
There are a number of organisations all over the world that manufacture n-type cells and modules, such as SunPower, Yingli, Panasonic, photovoltaic global solutions (PVGS), Lucky-Goldstar (LG), and Neo-solar-power [3, 44 – 48].
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