Solar cell

摘要

A solar cell includes a photoelectric conversion layer and a front electrode on the photoelectric conversion layer. The front electrode includes a bus bar electrode; at least one first finger electrode directly connected to the bus bar electrode; a plurality of connecting electrodes extending from the bus bar electrode and having a width smaller than a width of the bus bar electrode, wherein the plurality of connecting electrodes includes portions that are spaced apart from each other to form a space therebetween; at least one second finger electrode connected to at least one of the plurality of connecting electrodes; and an auxiliary electrode formed at the space between the portions of the plurality of connecting electrodes.

主权项

1. A solar cell comprising:
a photoelectric conversion layer; and a front electrode on the photoelectric conversion layer, wherein the front electrode comprises: a bus bar electrode; at least one first finger electrode directly connected to the bus bar electrode; a plurality of connecting electrodes extending from one end of the bus bar electrode and having a width smaller than a width of the bus bar electrode, wherein the plurality of connecting electrodes includes portions that are spaced apart from each other to form a space therebetween; at least one second finger electrode connected to at least one of the plurality of connecting electrodes; an auxiliary electrode formed at the space between the portions of the plurality of connecting electrodes; and a ribbon on the bus bar electrode, wherein the plurality of connecting electrodes and the auxiliary electrode are positioned near one end of the ribbon, are positioned in a longitudinal direction of the ribbon, and extend adjacent to an edge of the photoelectric conversion layer parallel to the at least one first finger electrode or the at least one second finger electrode at a space between the one end of the ribbon and the edge of the photoelectric conversion layer, wherein the at least one second finger electrode comprises a plurality of second finger electrodes connected to one of the plurality of connecting electrodes, wherein the plurality of connecting electrodes have a cross section varying at intersections of the plurality of connecting electrodes and the plurality of second finger electrodes so that the cross section gradually decreases as a distance from the bus bar electrode increases and as a distance from the edge of the photoelectric conversion layer decreases, and wherein the auxiliary electrode extends in a direction crossing the at least one first finger electrode or the at least one second finger electrode.