Patent ID: 9583648
Date: 2017-02-28
CPC Classifications: H01L,Y02E

Claim:
1. A solar cell comprising: a substrate of a first conductive type; a plurality of first electrodes positioned on one surface of the substrate in parallel with one another, the plurality of first electrodes being extended in a first direction with a first width, and a distance between two adjacent first electrodes of the plurality of first electrodes having a first distance; a plurality of second electrodes extended in a second direction crossing the first direction and connected to the first electrodes, and each of the plurality of second electrodes having a second width; and a plurality of first surface field regions doped with impurities of the first conductive type at a concentration higher than the substrate, the first surface field regions extending in the first direction with a third width wider than the first width, and a distance between two adjacent first surface field regions of the plurality of first surface field regions having a second distance less than the first distance, wherein the first surface field regions include discontinuous regions having an impurity concentration lower than an impurity concentration of the first surface field regions, the discontinuous regions being positioned at crossings of the first electrodes and the second electrodes and extending in the first direction, and an extended width of the discontinuous regions is greater than the second width of the second electrodes.