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Title:
SOLAR CELL
Document Type and Number:
WIPO Patent Application WO/2011/134700
Kind Code:
A3
Abstract:
The invention relates to a solar cell comprising: a passivation layer sequence provided with a plurality of island-shaped recesses in which the passivation layers are completely removed, on the second main surface; a thin first metal layer arranged on the passivation sequence layer and in the recesses on the substrate surface; a thin dielectric cover layer covering the first metal layer and comprising a first regular arrangement of narrow linear openings and a second regular arrangement of essentially wider linear or elongate island-shaped openings, the first and the second opening arrangements being aligned at an angle, in particular perpendicular to each other. Said solar cell also comprises a second metal layer which is highly conductive and can be soldered on the open surface in the openings of the first and second opening arrangements, said second metal layer making contact with the first metal layer.

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Inventors:
KROKOSZINSKI HANS-JOACHIM (DE)
Application Number:
PCT/EP2011/052954
Publication Date:
June 07, 2012
Filing Date:
March 01, 2011
Export Citation:
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Assignee:
BOSCH GMBH ROBERT (DE)
KROKOSZINSKI HANS-JOACHIM (DE)
International Classes:
H01L31/18; H01L31/0224
Foreign References:
US6337283B12002-01-08
US20090283143A12009-11-19
US20100055822A12010-03-04
Other References:
VERLINDEN P ET AL: "Multilevel metallization for large area point-contact solar cells", PROCEEDINGS OF THE 20TH IEEE PHOTOVOLTAIC SPEC. CONF., 26 September 1988 (1988-09-26) - 30 September 1988 (1988-09-30), Las Vegas, pages 532 - 537, XP010750466, DOI: 10.1109/PVSC.1988.105759
ANSGAR METTE: "New Concepts for Front Side Metallization of Industrial Silicon Solar Cells", 26 November 2007 (2007-11-26), XP055020426, Retrieved from the Internet [retrieved on 20120228]
Attorney, Agent or Firm:
ROBERT BOSCH GMBH (Stuttgart, DE)
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