SOLAR CELL

摘要

A solar cell includes: a semiconductor substrate having a light-receiving surface and a back surface; a first-conductivity-type first semiconductor layer on the back surface; a second-conductivity-type second semiconductor layer on the back surface; a first electrode electrically connected to the first semiconductor layer; a second electrode electrically connected to the second semiconductor layer; and an insulating layer in a boundary region between a first-conductivity-type region of the first semiconductor layer and a second-conductivity-type region of the second semiconductor layer. The insulating layer has an inclined side surface adjacent the second-conductivity-type region inclined such that the thickness of the insulating layer decreases with decreasing distance from the second-conductivity-type region. The width of the inclined surface in a direction perpendicular to the thickness direction of the insulating layer and toward the second-conductivity-type region is 10 to 300 times the thickness of the insulating layer in a region excluding the inclined surface.

主权项

1. A solar cell, comprising:
a semiconductor substrate of one of a first conductivity type and a second conductivity type having a light receiving surface and a back surface; a first semiconductor layer of the first conductivity type on the back surface; a second semiconductor layer of the second conductivity type on the back surface; a first electrode electrically connected to the first semiconductor layer; a second electrode electrically connected to the second semiconductor layer; and an insulating layer in a boundary region between a first conductivity type region of the first semiconductor layer and a second conductivity type region of the second semiconductor layer, wherein a side of the insulating layer adjacent the second conductivity type region has an inclined surface inclined such that a thickness of the insulating layer decreases with decreasing distance from the second conductivity type region, and a width of the inclined surface in a direction perpendicular to a thickness direction of the insulating layer and toward the second conductivity type region is 10 to 300 times a thickness of the insulating layer in a region excluding the inclined surface.