EP 4430673 A1 20240918 - SOLAR CELL AND METHOD FOR THE PRODUCTION OF A SOLAR CELL
Title (en)
SOLAR CELL AND METHOD FOR THE PRODUCTION OF A SOLAR CELL
Title (de)
SOLARZELLE UND VERFAHREN ZUR HERSTELLUNG EINER SOLARZELLE
Title (fr)
CELLULE SOLAIRE ET PROCÉDÉ DE FABRICATION DE CELLULE SOLAIRE
Publication
Application
Priority
- DE 102021129460 A 20211111
- DE 2022100843 W 20221111
Abstract (en)
[origin: WO2023083418A1] The invention relates to a solar cell comprising - a substrate (1) having a front side (11) and a rear side (12) and a plurality of edges (13) extending between the front side (11) and rear side (2), - a conductive front-side layer (2), which is arranged on a surface of the front side (11), - a front-side electrode (14), which is arranged on the front side (11) and is electrically connected to the conductive front-side layer (2), - a highly doped rear-side layer (7), which is arranged on a surface of the rear side (12), - a tunnel layer (4), which is arranged on the highly doped rear-side layer (7), - a conductive rear-side layer (5), which is arranged on the highly doped rear-side layer (7) and the tunnel layer (4), - a rear-side electrode (15), which is arranged on the rear side (12) and is electrically connected to the conductive rear-side layer (5), - an insulation portion (16), which is formed adjacent to the surface of the front side (11) and on the edges (13) adjacent to the surface of the front side (11). A a rear-side layer assembly, comprising the highly doped rear-side layer (7), the tunnel layer (4) and the conductive rear-side layer (5), is recessed in the insulation portion (16) so that electrical contact between the highly doped rear-side layer (7) and the conductive front-side layer (2) is structurally prevented. The invention also relates to a method for producing a solar cell from a solar cell semi-finished product that is subjected to a plurality of etching steps in order to produce the insulation portion (16).
IPC 8 full level
H01L 31/0747 (2012.01); H01L 31/18 (2006.01)
CPC (source: EP)
H01L 31/0747 (2013.01); H01L 31/1804 (2013.01); H01L 31/186 (2013.01)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
DE 102021129460 A1 20230511; CN 118679579 A 20240920; EP 4430673 A1 20240918; WO 2023083418 A1 20230519
DOCDB simple family (application)
DE 102021129460 A 20211111; CN 202280088030 A 20221111; DE 2022100843 W 20221111; EP 22829668 A 20221111