Module fabrication of solar cells with low resistivity electrodes

摘要

One embodiment of the present invention provides a solar module. The solar module includes a front-side cover, a back-side cover, and a plurality of solar cells situated between the front- and back-side covers. A respective solar cell includes a multi-layer semiconductor structure, a front-side electrode situated above the multi-layer semiconductor structure, and a back-side electrode situated below the multi-layer semiconductor structure. Each of the front-side and the back-side electrodes comprises a metal grid. A respective metal grid comprises a plurality of finger lines and a single busbar coupled to the finger lines. The single busbar is configured to collect current from the finger lines.

主权项

1. A solar module, comprising:
a plurality of connected solar cells, wherein a respective solar cell comprises:
a multi-layer semiconductor structure that has a first-polarity surface and a second-polarity surface, wherein the second polarity is opposite to the first polarity;a first electrode on the first-polarity surface; anda second electrode on the second-polarity surface;wherein the first and second electrodes each comprise a plurality of finger lines and a busbar coupled to the finger lines; andwherein the first-polarity surface and second-polarity surface each have only an area near one edge covered by the busbar.