KETEP 세계에너지시장정보

A solar cell, characterized in that it comprises:a semiconductor substrate, wherein the semiconductor substrate comprises a front and a back side of the relative setting;an emitter and a frontal passivation layer positioned at the front side of the semiconductor substrate;tunneling layer, doped conductive layer and backside passivation layer located at the back of the semiconductor substrate, wherein the doped conductive layer comprises a first doped conductive layer corresponding to the metallization region on the back side and a second doped conductive layer corresponding to the non-metallized region on the back surface, the oxygen content of the first doped conductive layer is less than the oxygen content of the second doped conductive layer, the content of oxygen element in the first doped conductive layer is 19%~22%, and the content of oxygen element in the second doped conductive layer is 27%~28%; the first doped conductive layer and the second doped conductive layer are both phosphorus doped layers, and the concentration of phosphorus elements in the first doped conductive layer is greater than the concentration of phosphorus elements in the second doped conductive layer;a front electrode in contact with the emitter and a back electrode in contact with the first doped conductive layer.