公开(公告)号：US20240282868A1

公开(公告)日：2024-08-22

申请号：US18581681

申请日：2024-02-20

Applicant: HANWHA Q CELLS GMBH ,  CE Cell Engineering GmbH

Inventor： Florian STENZEL ,  Ansgar METTE ,  Stefan HOERNLEIN ,  Martin SCHAPER ,  Axel SCHWABEDISSEN ,  Janko CIESLAK ,  Eckehard HOFMUELLER ,  Stefan STOECKEL ,  Eve KRASSOWSKI

IPC: H01L31/0224 ,  H01L31/16

CPC classification number: H01L31/022433 ,  H01L31/022441 ,  H01L31/165

Abstract: A device for improving the ohmic contact between a front side contact and a doped layer of a wafer solar cell that includes a front side, a rear side and a rear side contact. The front side and/or the rear side contact are strips or grids. The device includes: a contacting unit for contacting the front or rear side contact; a further contacting unit for contacting the other contact; a voltage source having one pole for connection to the contact unit and another pole for connection to the further contacting unit; and a point light source to illuminate the front or rear side. The further contacting unit includes: an optically transparent material, coated using an optically transparent, electrically conductive layer; or an optically transparent material having microscopically-thin wires; or an optically transparent, electrically conductive material having microscopically-thin wires; or a mesh or a network made up of microscopically-thin wires.

公开(公告)号：US20240282869A1

公开(公告)日：2024-08-22

申请号：US18581071

申请日：2024-02-19

Applicant: HANWHA Q CELLS GMBH ,  CE Cell Engineering GmbH

Inventor： Florian STENZEL ,  Ansgar METTE ,  Stefan HOERNLEIN ,  Martin SCHAPER ,  Axel SCHWABEDISSEN ,  Janko CIESLAK ,  Eckehard HOFMUELLER ,  Stefan STOECKEL ,  Eve KRASSOWSKI

IPC: H01L31/0224 ,  H01L31/18

CPC classification number: H01L31/022441 ,  H01L31/188

Abstract: A device for improving ohmic contact between a front contact and a doped layer of a wafer solar cell having a front, a back, the front contact, the doped layer and a back contact. The front and back contacts are strip-shaped or grid-shaped. The device having: two contacting apparatuses for electrically contacting the front and back contacts; a voltage source having a pole for electrical connection to one contacting apparatus and a pole for connection to the other contacting apparatus; and two point light sources to illuminate the front and the back. The contacting apparatuses each have: an optically-transparent material coated with an optically-transparent, electrically-conductive layer; an optically-transparent material having microscopically-thin, electrically-conductive wires integrated into a surface of the optically-transparent material; an optically-transparent, electrically-conductive material having microscopically-thin, electrically-conductive wires integrated into a surface of the optically-transparent, electrically-conductive material; or, a braid or a network of microscopically-thin, electrically-conductive wires.

公开(公告)号：US20240284689A1

公开(公告)日：2024-08-22

申请号：US18581168

申请日：2024-02-19

Applicant: HANWHA Q CELLS GMBH ,  CE Cell Engineering GmbH

Inventor： Florian STENZEL ,  Ansgar METTE ,  Stefan HOERNLEIN ,  Martin SCHAPER ,  Axel SCHWABEDISSEN ,  Janko CIESLAK ,  Eckehard HOFMUELLER ,  Stefan STOECKEL ,  Eve KRASSOWSKI

IPC: H10K39/12 ,  H10K39/15

CPC classification number: H10K39/12 ,  H10K39/15

Abstract: A method for improving contact resistance of a multi-junction solar cell having a front and a back and multiple subcells, including: a) delivering the solar cell with front and back contacts in grid, strip or transparent form; b) contact-connecting one region of the back contact to a contact device connected to one pole of a voltage source, and the front contact or another region of the back contact, which is electrically insulated from the region, to another contact device, which is connected to the other pole of the voltage source; c) applying a voltage against the forward direction of the solar cell to the contacts, the voltage smaller than a solar cell breakdown voltage; d) guiding a point light source over the solar cell, a subregion of the front or back being illuminated, inducing current in the subregion, and illuminating the subregion with light beams of different wavelengths.

公开(公告)号：US20240282870A1

公开(公告)日：2024-08-22

申请号：US18581984

申请日：2024-02-20

Applicant: HANWHA Q CELLS GMBH

Inventor： Florian STENZEL ,  Ansgar METTE ,  Stefan HOERNLEIN ,  Martin SCHAPER ,  Axel SCHWABEDISSEN ,  Janko CIESLAK ,  Eckehard HOFMUELLER ,  Stefan STOECKEL ,  Eve KRASSOWSKI

IPC: H01L31/0224 ,  H01L31/0687

CPC classification number: H01L31/022458 ,  H01L31/022433 ,  H01L31/0687

Abstract: A method for improving the ohmic contact between a front contact grid and a doped layer of a wafer solar cell, including: providing the wafer solar cell; electrically contacting the front contact grid with a contacting device electrically connected to a pole of a voltage source; electrically contacting another contacting device electrically connected to the other pole of the voltage source with a back contact grid of the cell; applying a voltage directed against the forward direction of the cell to the front contact grid and the back contact grid with the voltage source, wherein the voltage is smaller than a breakdown voltage of cell; guiding a point light source over the sun-averted back side of the cell while the voltage is applied, wherein a partial region of the sun-averted back side is illuminated such that a current flow is induced in, and acts on, the partial region.

公开(公告)号：US20180261703A1

公开(公告)日：2018-09-13

申请号：US15761395

申请日：2016-08-09

Applicant: HANWHA Q CELLS GMBH

Inventor： Peter ENGELHART ,  Ansgar METTE ,  Florian STENZEL

IPC: H01L31/0224 ,  H01L31/0216 ,  H01L31/18

CPC classification number: H01L31/022425 ,  H01L31/02167 ,  H01L31/1868 ,  Y02E10/50 ,  Y02P70/521

Abstract: A solar cell comprising: a semiconductor substrate; a metallization paste on a surface of the semiconductor substrate; and a tunneling layer between the substrate surface and the metallization paste.

公开(公告)号：US20250048773A1

公开(公告)日：2025-02-06

申请号：US18716724

申请日：2022-12-08

Applicant: HANWHA Q CELLS GMBH

Inventor： Ansgar METTE ,  Fabian FERTIG ,  Stefan HÖRNLEIN

IPC: H01L31/18

Abstract: A system for stabilizing and/or improving an efficiency of a solar cell having a front-side front contact and a rear-side rear contact. The system includes: an illumination unit that is designed to locally illuminate the solar cell; a voltage source having two contacting apparatuses, wherein one contacting apparatus is designed to be connected to the front contact of the solar cell, and the other contacting apparatus is designed to be connected to the rear contact of the solar cell in such a way that a current flow is induced in the reverse direction of the solar cell. The system also includes a heating apparatus which is designed and configured to heat the solar cell during a current flow induced in the reverse direction.

公开(公告)号：US20240379895A1

公开(公告)日：2024-11-14

申请号：US18688921

申请日：2022-09-08

Applicant: HANWHA Q CELLS GMBH

Inventor： Ansgar METTE ,  Martin SCHAPER ,  Stefan HÖRNLEIN ,  Michael QUINQUE ,  Tino WIECZOREK

IPC: H01L31/18

Abstract: A system for electrically contacting wafer solar cells with a front-face electrode, including: an upper contact device for electrically contacting the front-face electrode of the wafer solar cell, —a lower contact device for electrically contacting the rear-face electrode of the wafer solar cell, and an electric voltage source for applying a defined voltage to the wafer solar cell and regulating the flow of current between the upper and lower contact devices. The upper contact device and the lower contact device are designed to additionally mechanically convey the wafer solar cell along an in-line transport direction for an in-line production line for wafer solar cells while contacting the wafer solar cell.