Title:
PHOTOVOLTAIC THIN-FILM SOLAR MODULES AND METHOD FOR PRODUCING SUCH THIN-FILM SOLAR MODULES
Document Type and Number:
WIPO Patent Application WO/2013/152965
Kind Code:
A3
Abstract:
The invention relates to a photovoltaic thin-film solar module, in particular a thin-film solar module having a chalcopyrite or kesterite semiconductor absorber layer. A rear electrode layer (4), an electrically conductive barrier layer (6), an ohmic contact layer (8), a semiconductor absorber layer (10), buffer layers (12, 14) and a front electrode layer (10) are provided on a glass substrate (2). A series connection of thin-film solar cells within a module is achieved in a production method according to the invention in that the separation trenches (16, 20, 24) are inserted only after the complete application of the layers (4, 6, 8, 10, 12, 14, 22) of the thin-film solar module. The separation trench (16) is filled with insulating material (18). The separation trench (20) is subsequently filled with a highly conductive material and an electrically conductive bridge (28) is arranged for the serial electrical connection of the front electrode layer (22) of a solar cell with the rear electrode (4, 6, 8) of an adjacent solar cell. By means of the method according to the invention, the cellular and modular format can be varied in wide ranges also in mass production and corrosion in the separation trenches is prevented by the application of the semiconductor absorber layer.
Inventors:
PROBST VOLKER (DE)
Application Number:
PCT/EP2013/056767
Publication Date:
August 07, 2014
Filing Date:
March 28, 2013
Export Citation:
Assignee:
BOSCH GMBH ROBERT (DE)
International Classes:
H01L27/142; H01L31/032; H01L31/0392; H01L31/0749
Domestic Patent References:
| WO2011032717A2 | 2011-03-24 |
Foreign References:
| GB2483922A | 2012-03-28 | |||
| US20110240118A1 | 2011-10-06 | |||
| US20100015752A1 | 2010-01-21 | |||
| EP2284892A1 | 2011-02-16 | |||
| DE4442824C1 | 1996-01-25 | |||
| EP1710844A1 | 2006-10-11 |
Other References:
PATRICK BLÖSCH ET AL: "Comparative Study of Different Back-Contact Designs for High-Efficiency CIGS Solar Cells on Stainless Steel Foils", IEEE JOURNAL OF PHOTOVOLTAICS, I E E E, US, vol. 1, no. 2, 1 October 2011 (2011-10-01), pages 194 - 199, XP011390833, ISSN: 2156-3381, DOI: 10.1109/JPHOTOV.2011.2166589
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