Abstract: A bifacial solar cell includes a silicon substrate; an emitter layer; a plurality of first electrodes locally on the emitter layer; a first aluminum oxide layer on the emitter layer; a first silicon oxide layer between the first aluminum oxide layer and the emitter layer; a first anti-reflection layer on the first aluminum oxide layer; a back surface field layer on the silicon substrate; a second aluminum oxide layer on the silicon substrate; a second silicon oxide layer between the second aluminum oxide layer and the silicon substrate; a second anti-reflection layer on the second aluminum oxide layer; and a plurality of second electrodes respectively on the back surface field layers through the second anti-reflection layer, the second aluminum oxide layer and the second silicon oxide layer.

Abstract: A bifacial solar cell includes a silicon substrate; an emitter layer; a plurality of first electrodes locally on the emitter layer; a first aluminum oxide layer on the emitter layer; a first silicon oxide layer between the first aluminum oxide layer and the emitter layer; a first anti-reflection layer on the first aluminum oxide layer; a back surface field layer on the silicon substrate; a second aluminum oxide layer on the silicon substrate; a second silicon oxide layer between the second aluminum oxide layer and the silicon substrate; a second anti-reflection layer on the second aluminum oxide layer; and a plurality of second electrodes respectively on the back surface field layers through the second anti-reflection layer, the second aluminum oxide layer and the second silicon oxide layer.

Abstract: A method for manufacturing a solar cell according to an embodiment of the invention includes forming an emitter layer having an emitter dopant of a second conductive type opposite to a first conductive type on a first surface on a semiconductor substrate; forming a passivation layer including a first dopant of the first conductive type on a second surface of the semiconductor substrate; forming a back surface field layer including a first portion on the second surface by locally heating a portion of the passivation layer using a laser; and forming an electrode electrically connected to the first portion of the back surface field layer through an opening of the passivation layer after the first portion of the back surface field layer is formed on the second surface, wherein the back surface field layer is locally formed between the electrode and the second surface.

Abstract: A method for fabricating a solar cell, includes forming an emitter layer by doping a first impurity having a second conductivity type, opposite a first conductivity type, on a front surface of a substrate having the first conductivity type; forming a back surface field by doping a second impurity having the first conductivity type on a rear surface of the substrate; and forming a plurality of front finger lines in contact with the emitter layer and a plurality of rear finger lines in contact with the back surface field, wherein the emitter layer has a selective emitter structure, the back surface field has a selective back surface field structure, and the number of the plurality of rear finger lines positioned on the rear surface of the substrate is different from the number of the plurality of front finger lines positioned on a front surface of the substrate.

Abstract: A solar cell and a method for manufacturing the same are disclosed. The solar cell includes a substrate, an emitter layer at a front surface of the substrate, a first anti-reflection layer on the emitter layer, a back surface field layer at a back surface of the substrate, and a second anti-reflection layer on the back surface field layer. The first anti-reflection layer and the second anti-reflection layer overlap may each other.

Abstract: A solar cell includes a substrate containing impurities of a first conductive type, an emitter region which is positioned at a first surface of the substrate and contains impurities of a second conductive type opposite the first conductive type to form a p-n junction along with the substrate, an anti-reflection layer positioned on the emitter region, a first electrode which is positioned on the anti-reflection layer and is coupled to the emitter region, and a second electrode which is positioned on a second surface of the substrate and is coupled to the substrate. A first area of the anti-reflection layer, which is positioned under the first electrode, has a plurality of openings. The first electrode couples to the emitter region exposed through the plurality of openings.

Abstract: A bifacial solar cell includes a silicon substrate; an emitter layer; a plurality of first electrodes locally on the emitter layer; a first aluminum oxide layer on the emitter layer; a first silicon oxide layer between the first aluminum oxide layer and the emitter layer; a first anti-reflection layer on the first aluminum oxide layer; a back surface field layer on the silicon substrate; a second aluminum oxide layer on the silicon substrate; a second silicon oxide layer between the second aluminum oxide layer and the silicon substrate; a second anti-reflection layer on the second aluminum oxide layer; and a plurality of second electrodes respectively on the back surface field layers through the second anti-reflection layer, the second aluminum oxide layer and the second silicon oxide layer.

Abstract: A bifacial solar cell includes a substrate of an n-type; an emitter layer positioned on a first surface of the substrate; a plurality of first electrodes locally positioned on the emitter layer and electrically connected to the emitter layer; a first passivation layer positioned on the emitter layer; a silicon oxide layer formed at an interface between the first passivation layer and the emitter layer, the silicon oxide layer having a thickness of about 1 nm to 3 nm; a first anti-reflection layer positioned on the first passivation layer; a plurality of back surface field layers locally positioned on a second surface of the substrate; a plurality of second electrodes respectively positioned on the plurality of back surface field layers and electrically connected to the plurality of back surface field layers; and a second passivation layer positioned on the second surface of the substrate.

Abstract: A method for manufacturing a solar cell includes forming an emitter layer on a first surface of a substrate, forming a back surface field layer on a second surface opposite the first surface of the substrate, forming a first anti-reflection layer on the emitter layer, forming a second anti-reflection layer on the back surface field layer, and forming a plurality of first electrodes each including a first metal seed layer and a first conductive layer on a plurality of first contact regions of the first anti-reflection film and a plurality of second electrodes each including a second metal seed layer and a second conductive layer on a plurality of second contact regions of the second anti-reflection film, the plurality of first contact regions being partially formed at the first anti-reflection layer and each having a first width.

Abstract: A solar cell is provided comprising a substrate, a first insulating layer on a first surface of the substrate, the first insulating layer having a plurality of first openings that expose portions of the substrate, and a plurality of first electrodes electrically connected to the substrate through the first openings, wherein one or more of the first electrodes are configured so that a width of an upper portion located on the first insulating layer is wider than a width of a lower portion located in a corresponding first opening.

Abstract: A method for fabricating a solar cell, includes forming an emitter layer by doping a first impurity having a second conductivity type, opposite a first conductivity type, on a front surface of a substrate having the first conductivity type; forming a back surface field by doping a second impurity having the first conductivity type on a rear surface of the substrate; and forming a plurality of front finger lines in contact with the emitter layer and a plurality of rear finger lines in contact with the back surface field, wherein the emitter layer has a selective emitter structure, the back surface field has a selective back surface field structure, and the number of the plurality of rear finger lines positioned on the rear surface of the substrate is different from the number of the plurality of front finger lines positioned on a front surface of the substrate.

Abstract: Discussed is a solar cell including a substrate having a first conductivity type; an emitter layer including a plurality of finger lines connected with an emitter layer; a plurality of rear finger lines connected with a back surface field, wherein the emitter layer includes first areas in contact with the plurality of front finger lines and second areas positioned between the plurality of front finger lines and having a lower doping concentration than that of the first areas, the back surface field includes areas in contact with the plurality of rear finger lines, and the number of the plurality of rear finger lines positioned on a rear surface of the substrate and the number of the plurality of front finger lines positioned on a front surface of the substrate are different.

Abstract: A solar cell and a method for manufacturing the same are disclosed. The solar cell may include a substrate, an emitter layer positioned at a first surface of the substrate, a first anti-reflection layer that is positioned on a surface of the emitter layer and may include a plurality of first contact lines exposing a portion of the emitter layer, a first electrode that is electrically connected to the emitter layer exposed through the plurality of first contact lines and may include a plating layer directly contacting the emitter layer, and a second electrode positioned on a second surface of the substrate.

Abstract: A method for manufacturing a solar cell includes forming an emitter layer on a first surface of a substrate, forming a back surface field layer on a second surface opposite the first surface of the substrate, forming a first anti-reflection layer on the emitter layer, forming a second anti-reflection layer on the back surface field layer, and forming a plurality of first electrodes each including a first metal seed layer and a first conductive layer on a plurality of first contact regions of the first anti-reflection film and a plurality of second electrodes each including a second metal seed layer and a second conductive layer on a plurality of second contact regions of the second anti-reflection film, the plurality of first contact regions being partially formed at the first anti-reflection layer and each having a first width.

Abstract: A solar cell and a method for manufacturing the same are disclosed. The solar cell includes a substrate, an emitter region positioned at one surface of the substrate, a first insulating layer including a lower layer positioned on the emitter region and an upper layer positioned on the lower layer, and a first electrode which is formed of a first conductive paste and is electrically connected to the emitter region. The first insulating layer includes a plurality of first contact holes, and a portion of the first electrode is filled in the plurality of first contact holes.

Abstract: A solar cell and a method for manufacturing the same are discussed. The solar cell may include a substrate, an emitter layer positioned at a first surface of the substrate, a first anti-reflection layer that is positioned on a surface of the emitter layer and may include a plurality of first contact lines exposing a portion of the emitter layer, a first electrode that is electrically connected to the emitter layer exposed through the plurality of first contact lines and may include a plating layer directly contacting the emitter layer, and a second electrode positioned on a second surface of the substrate.

Abstract: A bifacial solar cell includes a substrate of an n-type; an emitter layer positioned on a first surface of the substrate; a plurality of first electrodes locally positioned on the emitter layer and electrically connected to the emitter layer; a first passivation layer positioned on the emitter layer; a silicon oxide layer formed at an interface between the first passivation layer and the emitter layer, the silicon oxide layer having a thickness of about 1 nm to 3 nm; a first anti-reflection layer positioned on the first passivation layer; a plurality of back surface field layers locally positioned on a second surface of the substrate; a plurality of second electrodes respectively positioned on the plurality of back surface field layers and electrically connected to the plurality of back surface field layers; and a second passivation layer positioned on the second surface of the substrate.

Abstract: A solar cell includes a substrate of a first conductive type, an emitter layer, of a second conductive type opposite the first conductive type, positioned at one surface of the substrate, a first electrode electrically connected to the emitter layer, a first protective layer positioned on a front surface of the emitter layer where the first electrode is not positioned, a back surface field layer positioned at another surface of the substrate, a second electrode electrically connected to the back surface field layer, and a second protective layer positioned on a back surface of the substrate where the second electrode is not positioned. Each of the first and second protective layers is formed of a material having fixed charges of the first conductive type.

Abstract: A solar cell is formed to have a silicon semiconductor substrate of a first conductive type; an emitter layer having a second conductive type opposite the first conductive type and formed on a first surface of the silicon semiconductor substrate; a back surface field layer having the first conductive type and formed on a second surface of the silicon semiconductor substrate opposite to the first surface; and wherein the emitter layer includes at least a first shallow doping area and the back surface field layer includes at least a second shallow doping area, and wherein a thickness of the first shallow doping area of the emitter layer is different from a thickness of the second shallow doping area of the back surface field layer.

Abstract: A solar cell according to an embodiment of the invention includes a substrate of a first conductive type, an emitter region of a second conductive type opposite the first conductive type, which is positioned at the substrate, an anti-reflection layer including a first opening exposing the emitter region and a plurality of second openings which expose the emitter region and are separated from one another, a first electrode which is positioned on a first portion of the emitter region exposed through the first opening and is connected to the first portion, a first bus bar which is positioned on a second portion of the emitter region exposed through the plurality of second openings and is connected to the second portion and the first electrode, and a second electrode which is positioned on the substrate and is connected to the substrate.