Photovoltaic cells are semiconductor sheets that use solar energy to generate electricity. As long as certain lighting conditions are met, the cell can output voltage and generate current in the presence of a loop.

The cell is the core factor that determines the overall performance of the module, and its importance to photovoltaic power generation is self-evident: the most important indicator of a photovoltaic module is the power generation, and the power generation system of the module is made of photovoltaic cells in series and parallel. From a principle point of view, the photoelectric conversion rate of the cell directly determines the overall power generation of the module.

The existing technical routes of photovoltaic cells are many and complex. In addition to the mainstream monocrystalline silicon PERC cells, BSF cells using the previous generation cell technology are also used to a certain extent. The new generation of N-type cells is also rapidly emerging and is considered to be expected to replace PERC cells. become the next mainstream product.

Doping other elements in the semiconductor silicon increases a large number of free electrons, so that the semiconductor mainly relies on electrons to conduct electricity. Such products are called electronic semiconductors, or N-type semiconductors. Photovoltaic cells using such semiconductors are called N-type cells.

At present, monocrystalline PERC products, as the mainstream photovoltaic cells, have mature production technology, high production capacity, and photoelectric conversion efficiency of up to 23%. Compared with the previous generation of BSF cells, they have obvious advantages and are the most cost-effective battery technology route. But the problem with PERC cells is that their efficiency has approached the theoretical limit of 24.5%, and the room for future optimization is very limited. This is one of the main reasons why the industry is starting to look for the next generation of batteries.