Lg Electronics Inc.

Seongeun Lee

Sungjin Kim

Juhwa Cheong

Minho Choi

Youngsung Yang

Taeyoung Kwon

Haejong Cho

Gyeayoung Kwag

Kyoungsoo Lee

Manhyo Ha

Yongduk Jin

Yiyin Yu

Jonghwan Kim

Ilhyoung Jung

Jeongbeom Nam

Juhwan Yun

Jinah Kim

Younghyun Lee

Jiweon Jeong

Myungjun Shin

Junyong Ahn

Hyunjung Park

Mann Yi

Jeonghyo Kwon

Yangwoo Byun

Younggu Do

A solar cell can include a front passivation region including a plurality of layers formed of different materials from each other and including a first aluminum oxide layer and a first silicon nitride layer, and a back passivation region including a plurality of layers formed of different materials from each other and including a second aluminum oxide layer and a second silicon nitride layer, wherein a thickness of a first silicon nitride layer is greater than a thickness of the first aluminum oxide layer, and a thickness of a second silicon nitride layer is greater than a thickness of the second aluminum oxide layer.

Solar cell

A solar cell includes a photoelectric conversion layer; and a front electrode on the photoelectric conversion layer, wherein the front electrode includes a plurality of first finger electrodes; a plurality of second finger electrodes; a bus electrode directly connected to at least one of the plurality of first finger electrodes; a plurality of connecting electrodes connected to the plurality of second finger electrodes, the plurality of connecting electrodes forming at least one space therebetween; and an auxiliary electrode formed at the at least one space, wherein the auxiliary electrode connects at least two connecting electrodes of the plurality of connecting electrodes.

A solar cell can include a substrate of a first conductive type; an emitter region which is positioned at a front surface of the substrate and has a second conductive type different from the first conductive type; a back surface field region which is positioned at a back surface opposite the front surface of the substrate; a front passivation region including a plurality of layers which are sequentially positioned on the emitter region; a back passivation region including a plurality of layers which are sequentially positioned on the back surface field region; a front electrode part which passes through the front passivation region and is connected to the emitter region, wherein the front electrode part comprises a plurality of front electrodes that are apart from each other and a front bus bar connecting the plurality of front electrodes; a back electrode part which passes through the back passivation region and is connected to the back surface field region, wherein the back electrode part comprises a plurality of back electrodes that are apart from each other and a back bus bar connecting the plurality of back electrodes, wherein the front passivation region includes a first aluminum oxide layer and the back passivation region includes a second aluminum oxide layer.

A solar cell module includes a plurality of solar cells comprising a first solar cell and a second solar cell adjacent to each other; a conductive ribbon, wherein each of the plurality of solar cells comprises: a substrate; an emitter layer of positioned on the substrate; a plurality of finger electrodes formed in a first direction, each finger electrode being electrically connected to the emitter layer; and at least one first collector formed in a second direction crossing the first direction, the at least one first collector being electrically connected to the plurality of finger electrodes, wherein the conductive ribbon is attached to the at least one first collector in the second direction by a conductive adhesive, and wherein the conductive ribbon is attached on a collector region where the at least one first collector is formed and a deletion where the at least one first collector is not formed.

Solar cell and method for manufacturing the same, and solar cell module

A solar cell is discussed, which includes a pair of connecting electrodes having a portion having a width smaller than a width of a plurality of bus bar electrodes, and the pair of connecting electrodes connects a plurality of second finger electrodes to both sides of an end of one of the plurality of bus bar electrodes, respectively, wherein the end of the one of the plurality of bus bar electrodes being positioned in a second direction, wherein an area not including the plurality of second finger electrodes is positioned between the pair of connecting electrodes, and wherein an auxiliary electrode not connected to the plurality of second finger electrodes and having a width smaller than the width of the plurality of bus bar electrodes is disposed in the area not including the plurality of second finger electrodes.

A method for manufacturing a solar cell according to an embodiment of the present invention includes preparing a semiconductor substrate having a first conductivity type dopant; ion-implanting a pre-amorphization elements into a front surface of the semiconductor substrate to form an amorphous layer; and forming an emitter layer by ion-implanting second conductivity type dopant into the front surface of the semiconductor substrate. The method then further includes heat-treating the layers to activate the second conductivity type dopant. The method further includes forming a back surface field layer at a back surface of the semiconductor substrate by ion-implanting a first conductivity type dopant.

Method for manufacturing a solar cell

A solar cell module includes a plurality of solar cells each including a substrate, an emitter region positioned at a back surface of the substrate, first electrodes electrically connected to the emitter region, second electrodes electrically connected to the substrate, a first current collector positioned at ends of the first electrodes, and a second current collector at ends of the second electrodes, and a first connector connecting a first current collector of a first solar cell of the plurality of solar cells to a second current collector of a second solar cell adjacent to the first solar cell. The first current collector of the first solar cell and the second current collector of the second solar cell each have a different polarity.

Solar cell module

A solar cell is discussed. The solar cell includes a substrate of a first conductive type, an emitter region which is positioned at a front surface of the substrate and has a second conductive type different from the first conductive type, a front passivation region including a plurality of layers which are sequentially positioned on the emitter region, a back passivation region which is positioned on a back surface opposite the front surface of the substrate and includes three layers, a plurality of front electrodes which pass through the front passivation region and are connected to the emitter region, and at least one back electrode which passes through the back passivation region and is connected to the substrate.

A method for manufacturing a solar cell includes preparing a semiconductor substrate having a first conductivity type dopant; ion-implanting a pre-amorphization elements into a front surface of the semiconductor substrate to form an amorphous layer; and forming an emitter layer by ion-implanting second conductivity type dopant into the front surface of the semiconductor substrate. The method then further includes heat-treating the layers to activate the second conductivity type dopant. The method further includes forming a back surface field layer at a back surface of the semiconductor substrate by ion-implanting a first conductivity type dopant.

Solar cell and method for manufacturing with pre-amorphization implant to form emitter

A solar cell can include a substrate of a first conductive type; an emitter layer of a second conductive type opposite the first conductive type, and positioned on the substrate; a plurality of finger electrodes formed in a first direction, each finger electrode being electrically connected to the emitter layer; a plurality of first collector regions; a plurality of first electrodes positioned in a plurality of first collector regions and extending in the first direction from the plurality of finger electrodes; a plurality of second electrodes positioned in the plurality of first collector regions and formed in a perpendicular direction crossing the first direction; a plurality of third electrodes positioned in the plurality of first collector regions, connecting two neighboring first electrodes of the plurality of first electrodes and formed in the perpendicular direction; and a plurality of deletions positioned in the plurality of first collector regions. Furthermore, one of the plurality of second electrodes is positioned between a pair of the plurality of first electrodes.

A method of manufacturing a solar cell includes forming jagged portions non-uniformly on a surface of a substrate, forming a first type semiconductor and a second type semiconductor in the substrate, forming a first electrode to contact the first type semiconductor, and forming a second electrode to contact the second type semiconductor. An etchant used in a wet etching process in manufacturing the solar cell includes about 0.5 wt % to 10 wt % of HF, about 30 wt % to 60 wt % of HNO, and up to about 30 wt % of acetic acid based on total weight of the etchant.

Solar cell and method for manufacturing the same

A solar cell includes a photoelectric conversion layer and a front electrode on the photoelectric conversion layer. The front electrode includes a bus bar electrode; at least one first finger electrode directly connected to the bus bar electrode; a plurality of connecting electrodes extending from the bus bar electrode and having a width smaller than a width of the bus bar electrode, wherein the plurality of connecting electrodes includes portions that are spaced apart from each other to form a space therebetween; at least one second finger electrode connected to at least one of the plurality of connecting electrodes; and an auxiliary electrode formed at the space between the portions of the plurality of connecting electrodes.

A charge transferor of a solar cell, which collects and transfer charges generated from a semiconductor substrate, includes at least one electrode collecting the charges; and at least one collector transferring the charges collected by the at least one electrode, the at least one collector being included in at least one collector region on the substrate, wherein the at least one collector region in a first direction comprises at least one deletion portion where the at least one collector is not formed.

A bifacial solar cell is discussed. The bifacial solar cell includes a substrate, a p-type doped region positioned at a first surface of the substrate, a P-type electrode part electrically connected to the p-type doped region, an n-type doped region positioned at a second surface of the substrate, and an N-type electrode part electrically connected to the n-type doped region. The P-type electrode part is formed of a first inorganic solid powder including a first powder, which contains silver (Ag) and has an average diameter of about 0.2 &#x3bc;m to 1 &#x3bc;m, and a second powder, which contains a group III element and has an average diameter of about 1 &#x3bc;m to 5 &#x3bc;m. The N-type electrode part is formed of a second inorganic solid powder including only the first powder.

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Seoul, South Korea

Seongeun Lee