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US 2016/0240704 A1Published application
Solar cell
AssigneeLG Innotek Co., Ltd.
InventorMyung Seok Shim
Life of this patent
Estimating the term…
Abstract
A solar cell according to an embodiment comprises: a support substrate; a rear electrode layer formed on the support substrate; a first through groove formed on the rear electrode layer; an optical absorption layer formed on the rear electrode layer; and a front electrode layer formed on the optical absorption layer, wherein the average surface roughness (Ra1) of the support substrate, which is exposed by the first through groove, is in a range of 28 nm to 100 nm.
Claims19
A solar cell comprising:
- a support substrate;
- a rear electrode layer on the support substrate;
- a first through groove on the rear electrode layer;
- an optical absorption layer on the rear electrode layer;
- and
- a front electrode layer on the optical absorption layer, wherein the support substrate exposed through the first through groove has average surface roughness (Ra1) in a range of 28 nm to 100 nm.
3 more elements
A solar cell comprising:
- a support substrate;
- a rear electrode layer on the support substrate;
- a first through groove on the rear electrode layer;
- an optical absorption layer on the rear electrode layer;
- and
- a front electrode layer on the optical absorption layer,
- wherein the rear electrode layer comprises:
- a first contact surface at which a top surface of the rear electrode layer makes contact with the optical absorption layer;
- and
- a second contact surface at which a lateral side of the rear electrode layer exposed through the first through groove makes contact with the optical absorption layer, and
- wherein the support substrate comprises a third contact surface at which a top surface of the support substrate exposed through the first through groove makes contact with the optical absorption layer;
- and
- average surface roughness of the first contact surface, average surface roughness of the second contact surface, and average surface roughness of the third contact surface are in a range of 28 nm to 100 nm.
10 more elements
Dependencies are inferred from the claim text.