Solar cell and method for manufacturing the same

摘要

A solar cell includes a substrate, a selective emitter region which is positioned at the substrate and includes a lightly doped region and a heavily doped region, a first dielectric layer which is positioned on the selective emitter region and includes a plurality of first openings, which are separated from one another, and a plurality of second openings positioned around the plurality of first openings, a first electrode connected to the selective emitter region through the plurality of first openings and the plurality of second openings, and a second electrode which is positioned on the substrate and is connected to the substrate. The plurality of first openings and the plurality of second openings each have a different plane shape. The plane shape of the first opening has a line shape, and the plane shape of the second opening has a dot shape.

主权项

1. A solar cell comprising:
a substrate; a selective emitter region positioned at the substrate, the selective emitter region including a lightly doped region and a heavily doped region; a first dielectric layer positioned on the selective emitter region, the first dielectric layer including a plurality of first openings, which are separated from one another, and a plurality of second openings positioned around the plurality of first openings; a plurality of first finger electrodes separated from one another and extending parallel to one another; and a second electrode which is positioned on the substrate and is connected to the substrate, wherein the plurality of first openings and the plurality of second openings each have a different plane shape, wherein each first finger electrode of the plurality of first finger electrodes is connected to the selective emitter region through the plurality of first openings and the plurality of second openings, wherein the plurality of second openings are associated with and positioned on both sides of each one of the plurality of first openings, wherein the selective emitter region has a substantially flat surface and a textured surface, and wherein each of the first openings of the plurality of first openings is positioned on the substantially flat surface of the selective emitter region, and each of the second openings of the plurality of second openings is positioned on the textured surface of the selective emitter region.