Patent ID: 11961924
Assignee: ZHEJIANG JINKO SOLAR CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 16:
17. A solar cell, comprising:
a silicon substrate having a first surface and a second surface opposite to each other; and
at least one first electrode,
the at least one first electrode comprises a first electrode arranged on the second surface of the silicon substrate and electrically connected to the silicon substrate, wherein the first electrode on the second surface of the silicon substrate includes, along a thickness direction of the silicon substrate, a first conductive layer, a second conductive layer, and a first transport layer, the first transport layer is located between the first conductive layer and the second conductive layer, and the first transport layer is made of a semiconductor material and configured to electrically connect the first conductive layer with the second conductive layer,
wherein, along a direction away from the silicon substrate, the second surface is successively provided with a tunneling layer, a doped conductive layer, and a second passivation film,
wherein the first electrode on the second surface of the silicon substrate is arranged on one side of the second passivation film away from the tunneling layer, penetrates through the second passivation film, and is electrically connected to the doped conductive layer, and
wherein the silicon substrate, the first transport layer of the first electrode on the second surface of the silicon substrate, and the doped conductive layer have a same doping polarity.