Thin film type solar cell and method for manufacturing the same

摘要

A thin film type solar cell and a method for manufacturing the same is disclosed, wherein the method comprises sequentially depositing a front electrode layer and a semiconductor layer on a substrate; forming a first separating channel by removing predetermined portions of the front electrode layer and the semiconductor layer; forming a contact portion and a second separating channel by removing predetermined portions of the semiconductor layer; forming a first insulating layer in the first separating channel; and forming a plurality of rear electrodes at fixed intervals by each second separating channel interposed in-between, wherein each rear electrode is electrically connected with the front electrode layer through the contact portion. The present invention needs only one cleaning process after carrying out the laser-scribing process, whereby the yield can be improved owing to the simplified manufacturing process. According to the present invention, there is no need to alternately load the substrate to the vacuum-deposition apparatus and the laser-scribing apparatus, whereby the apparatus structure is simple and the manufacturing time is decreased, thereby resulting in the improved yield.

主权项

1. A method for manufacturing a thin film type solar cell comprising:
sequentially depositing a front electrode layer and a semiconductor layer on a substrate; forming a first separating channel by removing predetermined portions of the front electrode layer and the semiconductor layer; forming one or more contact portions and one or more second separating channels by removing predetermined portions of the semiconductor layer such that a separating portion of the semiconductor layer remains between each contact portion and an adjacent second separating channel; after forming the first separating channel, the contact portion(s) and the second separating channel(s), forming a first insulating layer in the first separating channel; forming a second insulating layer in the second separating channel; and after forming the first and second insulating layers, printing a plurality of rear electrodes over the first separating channel and contact portion(s) and not over the one or more second separating channels, wherein each rear electrode is electrically connected with the front electrode layer through a corresponding contact portion, wherein the first insulating layer is configured to block each rear electrode from contacting the front electrode layer through the first separating channel.