Patent ID: 9490379
Filing Date: 2016-11-08
CPC Classification: H01L,Y02E,Y02P

Claim Text:
1. A thin film solar cell comprising: a substrate; an inorganic insulating layer disposed on the substrate and having a plurality of first unevenness on an etched surface that includes a plurality of grooves, and a substantially flat surface opposite to the etched surface; a first electrode disposed on the inorganic insulating layer and having a plurality of second unevenness, wherein the grooves of the inorganic insulating layer are entirely filled with the first electrode, and wherein a size including a depth of the plurality of grooves of the inorganic insulating layer and a thickness of the first electrode are such that the plurality of second unevenness are self-textured by a crystallinity of the first electrode that is in a substantially diagonal direction within the grooves and in a substantially lateral side direction in terms of a crystal structure above the grooves, and that a frequency of peaks of the self-textured second unevenness is greater than that of the first unevenness; an absorbing layer disposed on the first electrode; and a second electrode disposed on the absorbing layer.