Patent ID: 11973151
Assignee: TONGWEI SOLAR (MEISHAN) CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 12:
13. The method according to claim 12, wherein the forming the front and back electrodes by screen printing comprises:
printing a layer of low-temperature conductive silver paste on the TCO conductive layers of the front and back surfaces by screen printing, respectively, and then sintering the layers of low-temperature conductive silver paste at a low temperature of 150° C. to 300° C. to form ohmic contact, wherein an Ag grid line has a thickness of 5 μm to 50 μm, a width of 20 μm to 60 μm, and a pitch of 1 mm to 5 mm.