Patent ID: 7863078

Claim:
A method for making an anti-reflection film of a solar cell comprising the steps of: providing a laminate comprising: a ceramic substrate; a titanium-based compound film coated on the ceramic substrate; a p + type poly-silicon back surface field coated on the titanium-based compound film in a high-temperature atmospheric pressure chemical vapor deposition system; a p âˆ’ type poly-silicon light-soaking film coated on the p + type poly-silicon back surface field in the high-temperature atmospheric pressure chemical vapor deposition system; and an n + type poly-silicon emitter coated on the p âˆ’ type poly-silicon light-soaking film; passivating the laminate with SiCNO:Ar plasma in a plasma-enhanced vapor deposition device, thus filling the dangling bonds of the silicon atoms at the surface of the n + type poly-silicon emitter, the dangling bonds of the silicon grains at the grain boundaries of the p âˆ’ type poly-silicon light-soaking film and the dangling bonds of the silicon atoms in the p + type poly-silicon back surface field; and coating the n + type poly-silicon emitter with an anti-reflection film of SiCN/SiO 2 .