A solar cell, comprising: a substrate of a first conductive type; an emitter layer of a second conductive type opposite the first conductive type on the substrate; a first electrode electrically connected to the emitter layer; a first electrode current collector connected to the first electrode and extended in a direction crossing the first electrode; a passivation layer on the substrate; a second electrode conductive layer; at least one back surface field layer; and a second electrode current collector opposite the first electrode current collector with the substrate interposed between the second electrode current collector and the first electrode current collector, and electrically connected to the second electrode conductive layer, wherein the second electrode conductive layer at least partially overlaps with the second electrode current collector, characterized in that the second electrode conductive layer is on the passivation layer, the second electrode conductive layer including at least one second electrode electrically connected to the substrate through the passivation layer; in that a top surface of the at least one second electrode is in direct physical contact with the at least one back surface field layer, wherein the back surface field layer is provided only between the at least one second electrode and the substrate; and in that the second electrode current collector is on the passivation layer, wherein a top surface of the second electrode current collector is in direct physical contact with the passivation layer, and wherein an overlap size of the second electrode conductive layer and the second electrode current collector is 0.1 mm to 1 mm. a substrate of a first conductive type; an emitter layer of a second conductive type opposite the first conductive type on the substrate; a first electrode electrically connected to the emitter layer; a first electrode current collector connected to the first electrode and extended in a direction crossing the first electrode; a passivation layer on the substrate; a second electrode conductive layer; at least one back surface field layer; and a second electrode current collector opposite the first electrode current collector with the substrate interposed between the second electrode current collector and the first electrode current collector, and electrically connected to the second electrode conductive layer, wherein the second electrode conductive layer at least partially overlaps with the second electrode current collector, characterized in that the second electrode conductive layer is on the passivation layer, the second electrode conductive layer including at least one second electrode electrically connected to the substrate through the passivation layer; in that a top surface of the at least one second electrode is in direct physical contact with the at least one back surface field layer, wherein the back surface field layer is provided only between the at least one second electrode and the substrate; and in that the second electrode current collector is on the passivation layer, wherein a top surface of the second electrode current collector is in direct physical contact with the passivation layer, and wherein an overlap size of the second electrode conductive layer and the second electrode current collector is 0.1 mm to 1 mm.