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1. (WO2018041301) PHOTOVOLTAIC MODULE WITH STACKED SOLAR CELLS CONNECTED UP IN SERIES IN INTEGRATED FASHION, AND METHOD FOR THE MANUFACTURE THEREOF

Pub. No.:    WO/2018/041301    International Application No.:    PCT/DE2017/100724
Publication Date: Fri Mar 09 00:59:59 CET 2018 International Filing Date: Wed Aug 30 01:59:59 CEST 2017
IPC: H01L 31/078
H01L 31/0463
H01L 31/0465
Applicants: HELMHOLTZ-ZENTRUM BERLIN FÜR MATERIALIEN UND ENERGIE GMBH
Inventors: KIRNER, Simon
RING, Sven
STANNOWSKI, Bernd
SCHLATMANN, Rutger
Title: PHOTOVOLTAIC MODULE WITH STACKED SOLAR CELLS CONNECTED UP IN SERIES IN INTEGRATED FASHION, AND METHOD FOR THE MANUFACTURE THEREOF
Abstract:
A photovoltaic module with strip-shaped stacked solar cells that are connected up in series in integrated fashion, arranged in substrate configuration on a glass substrate (1) and each have a crystalline silicon bottom cell and at least one further subcell (7). The p- and n-doped areas (3, 4) of the bottom cells are arranged next to one another on the incident-light side and the p- and n-doped areas of the subcells are arranged above one another. The bottom cells are configured so as to be contact-connected on one side and one of the two doped areas of the bottom cells has a highly electrically conductive layer (5) arranged on it that forms the absorber contact of the bottom cells and at the same time the rear contact of the stacked solar cells, the absorber contact having first isolating trenches (T0) between the strip-shaped bottom cells arranged next to one another. An electrically insulating layer (6) is applied over the extent of the highly conductive layer and has second isolating trenches (TK) between the bottom cells, which are configured with a parallel offset in the first isolating trenches. The subcells have an extensive transparent front contact (8) arranged on them with third isolating trenches (TZ) that are configured in parallel with and offset from the first and second isolating trenches and filled with the material of the front contact layer.