Double-sided solar cell and manufacturing method therefor

A preparation method for a double-sided solar cell, comprising the following steps:

• preparing a semi-finished product of the double-sided solar cell, the semi-finished product comprising:
• a silicon wafer;
• and a P-type doped layer, a front passivation layer, and a front anti-reflection layer that are sequentially formed on a front surface of the silicon wafer;
• providing an opening corresponding to a front finger on a front surface of the semi-finished product, the opening extending through the front anti-reflection layer and the front passivation layer in sequence and exposing a surface of the P-type doped layer;
• and
• coating a non-fire-through paste in contact with the P-type doped layer through the opening, sintering the paste to form the front finger, wherein an aluminum pin in the front finger is pinned into the silicon wafer,
• wherein the non-fire-through paste comprises a silver-aluminum paste containing a glass powder with a mass content greater than 0.8% and no more than 1.5%.