Principle of photovoltaic power generation and cutting-edge technology of photovoltaic cells

Cost reduction and efficiency increase in the field of photovoltaic cells is the inherent traction to promote the continuous development of the photovoltaic industry, among which the photovoltaic cell technology change to improve the photoelectric conversion efficiency is one of the key measures to promote cost reduction and efficiency increase.

 

From 2015 to 2020, photovoltaic cells have experienced application technology iterations from BSF to PERC; Since 2021, the new high-efficiency photovoltaic cell technology represented by TOPCon, XBC and HJT has gradually entered the stage of large-scale application. In the process of change of photovoltaic cell technology, equipment is the foundation and core of supporting process and production capacity landing, new equipment technology needs to balance cost, performance and other core elements, so equipment manufacturers need to work closely with downstream customers, according to the characteristics of the new process to provide cost and efficiency of systematic solutions, with high technical and product barriers.

 

For example, in the core process equipment for photovoltaic cells, Laplace uses core technology applications to continue to meet the needs of downstream customers through continuous innovation, including:

(1) The use of gaseous boron source, combined with low pressure atmosphere, high temperature and other characteristics to overcome process problems, take the lead in achieving large-scale production and application of boron diffusion equipment, breaking through the bottleneck of N-type battery mass production process;

(2) Take the lead in the large-scale mass production of photovoltaic LPCVD, which can meet the process requirements of tunneling oxidation of efficient photovoltaic cells and preparation of dopant polycrystalline silicon layer with high quality;

(3) Self-developed horizontal taping process, effectively improve production capacity, meet the production needs of large silicon wafers and thin silicon wafers, and reduce costs.

 

Photovoltaic effect (photovoltaic effect) refers to when the object is exposed to light, because the light energy is absorbed, the electron transition, the charge distribution in the object changes and produces an effect of electromotive force and current.