不同粒径球形银粉互配应用对PERC背面银浆性能的影响OA

Photovoltaic silver paste requires more efficient performance to meet the continuous demand for cost reduction and efficiency improvement in the industry.This article mainly attempts to adjust the sintered state of silver paste by doping spherical silver powders with different particle sizes,without changing the type and content of organic carrier and glass frit,in order to optimize the conductivity of PERC rear-side silver paste and its adhesion to solar cells.The research results indicate that due to the relatively higher activity of small-particle-size silver powder,replacing 20%of large-particle-size silver powder in the formulation can enhance the sintering activity of silver paste,yielding denser silver electrodes after sintering.Its adhesion and conductivity can be optimized simultaneously.However,a further increase in the proportion of small-particle-size silver powder will lead to an overall deterioration of adhesion after sintering.