Solar cell
AssigneeLG Electronics Inc.
InventorsDaehee Jang, Jihoon Ko, Juwan Kang, Jonghwan Kim
Life of this patent
Estimating the term…
Abstract
A solar cell according to an embodiment of the invention includes a substrate configured to have a plurality of via holes and a first conductive type, an emitter layer placed in the substrate and configured to have a second conductive type opposite to the first conductive type, a plurality of first electrodes electrically coupled to the emitter layer, a plurality of current collectors electrically coupled to the first electrodes through the plurality of via holes, and a plurality of second electrodes electrically coupled to the substrate. The plurality of via holes includes at least two via holes having different angles.
Claims8
A method of forming a solar cell, the method comprising:
- forming a plurality of via holes in a substrate of a first conductive type;
- forming an emitter layer at a first surface of the substrate, the emitter layer being a second conductive type opposite to the first conductive type;
- forming a plurality of first electrodes electrically coupled to the emitter layer;
- forming a plurality of current collectors on a second surface of the substrate, the plurality of current collectors being electrically coupled to the plurality of first electrodes through the plurality of via holes;
- and
- forming a plurality of second electrodes electrically coupled to the substrate on the second surface of the substrate,
- wherein the plurality of via holes are formed so that at least two via holes have different angles and the plurality of via holes are formed at respective portions where the plurality of first electrodes and the plurality of current collectors cross each other in the substrate, and the forming of the plurality of via holes is performed by one laser beam irradiation apparatus.
Dependencies are inferred from the claim text.