KETEP 세계에너지시장정보

A method for preparing a solar cell, comprising:
providing a substrate with a first conducting layer, the substrate comprising a first surface and a second surface opposite to each other in a thickness direction of the substrate, the first conducting layer being formed on the first surface;
forming a first electrode pattern on a side of the first conducting layer away from the substrate, the first electrode pattern being electrically connected to the first conducting layer, the first electrode pattern comprising a first soldering pattern, the first soldering pattern being configured for soldering to one or more first bus ribbons;
forming a first dielectric layer on a side of the first electrode pattern away from the substrate, and covering the first electrode pattern with the first dielectric layer; and
removing a portion of the first dielectric layer corresponding to the first soldering pattern, and exposing the first soldering pattern;
wherein the solar cell further comprises a second dielectric layer disposed between the first conducting layer and the first electrode pattern, and the first electrode pattern penetrates through the second dielectric layer to be electrically connected to the first conducting layer, wherein the method further comprises:
forming the second dielectric layer on the side of the first conducting layer away from the substrate before forming the first electrode pattern;
forming a first conductive paste pattern on a surface of the second dielectric layer away from the substrate, where the first conductive paste pattern matches the first electrode pattern in shape; and
sintering the first conductive paste pattern, causing the first conductive paste pattern to penetrate through the second dielectric layer, such that an ohmic contact is formed between a conductive material in the first conductive paste pattern and the first conducting layer, thereby forming the first electrode pattern.