Solar cell and solar cell module

摘要

A solar cell includes a semiconductor substrate, an emitter region positioned at the semiconductor substrate, a first electrode which is positioned on the semiconductor substrate and is connected to the emitter region, a second electrode which is positioned on the semiconductor substrate and is connected to the semiconductor substrate, and a second electrode current collector which is positioned on the semiconductor substrate and is connected to the second electrode. An overlap distance between the second electrode and the second electrode current collector in a first direction corresponding to an extension direction of a conductive film positioned on the second electrode current collector is less than an overlap distance between the second electrode and the second electrode current collector in a second direction crossing the first direction.

主权项

1. A solar cell comprising:
a semiconductor substrate; an emitter region which is positioned at the semiconductor substrate and forms a p-n junction along with the semiconductor substrate; a first electrode which is positioned on the semiconductor substrate and is connected to the emitter region; a second electrode which is positioned on the semiconductor substrate and is connected to the semiconductor substrate; and a second electrode current collector which is positioned on the semiconductor substrate and is connected to the second electrode, wherein the second electrode current collector includes a plurality of conductors which are separated from one another and parallel to one another along a first direction which is an extension direction of a conductive film positioned on the second electrode current collector, wherein the second electrode has a plurality of openings in which a portion of each of the plurality of conductors is exposed, wherein the conductive film is positioned on the plurality of conductors exposed through the plurality of openings of the second electrode, wherein edge portions of each of the plurality of conductors including a plurality of first portions parallel to the first direction and a plurality of second portions parallel to a second direction crossing the first direction, and wherein at least one of the plurality of second portions does not overlap with a portion of the second electrode parallel to the second direction and are not separated from one another, and a side surface of the second portion and a side surface of the second electrode contact each other.