Patent ID: 11791425

Abstract:
A preparation method for a solar cell back electrode and an application thereof are provided. The method comprises setting a back electrode barrier layer and using back-side silver paste in coordination. The back electrode barrier layer comprises the following components: 20 to 80 parts by weight of metal nitride powder, nitrogen-silicon compound powder, oxide powder or low-melting-point metal powder in total; 0.5 to 5 parts by weight of lead-free glass powder; 10 to 40 parts by weight of organic carrier; and 0.1 to 1 part by weight of organic additives. The back-side silver paste comprises the following components: 5 to 60 parts by weight of hollow spherical silver powder; 5 to 30 parts by weight of flaky silver powder; 0.5 to 5 parts by weight of lead-free glass powder; 10 to 50 part by weight of organic binder; and 0.1 to 1 part by weight of organic additives.