Patent ID: 9000291
Filing Date: 2015-04-07
Classification: H01L,Y02E

Abstract:
1. A solar cell, comprising: a first conductive type substrate; an emitter layer of a second conductive type opposite the first conductive type, the emitter layer and the substrate forming a p-n junction, the emitter layer being positioned on a first surface of the substrate; a plurality of first electrodes electrically connected to the emitter layer; at least one current collector connected to the plurality of first electrodes; and a second electrode electrically connected to the substrate, the second electrode being positioned on a second surface of the substrate opposite the first surface of the substrate, wherein each of the plurality of first electrodes comprises a first electrode layer and a second electrode layer positioned on an upper part and lateral surfaces of the first electrode layer, each of the at least one current collector comprises a first current collector layer and at least one second current collector layer positioned on the first current collector layer, the first current collector layer includes a plurality of first portions and the at least one second current collector layer is positioned on the plurality of first portions, the at least one second current collector layer is positioned between adjacent ones of the plurality of first portions, on upper parts of the plurality of first portions, and on lateral surfaces of the plurality of first portions positioned at edges of the at least one first current collector layer, and the plurality of first portions are positioned to be spaced apart from each other within the at least one second current collector layer.