Title:
PROCESS FOR THE PRODUCTION OF A MWT SILICON SOLAR CELL
Document Type and Number:
WIPO Patent Application WO/2011/081808
Kind Code:
A3
Abstract:
A process for the production of a MWT silicon solar cell comprising the steps: (1) providing a p-type silicon wafer with (i) holes forming vias between the front-side and the back-side of the wafer and (ii) an n-type emitter extending over the entire front-side and the inside of the holes, (2) applying a conductive metal paste to the holes of the silicon wafer to provide at least the inside of the holes with a metallization, (3) drying the applied conductive metal paste, and (4) firing the dried conductive metal paste, whereby the wafer reaches a peak temperature of 700 to 900°C, wherein the conductive metal paste has no or only poor fire-through capability and comprises (a) at least one particulate electrically conductive metal selected from the group consisting of silver, copper and nickel and (b) an organic vehicle.
Inventors:
HANG KENNETH WARREN (US)
LAUDISIO GIOVANNA (GB)
PRINCE ALISTAIR GRAEME (GB)
YOUNG RICHARD JOHN SHEFFIELD (GB)
LAUDISIO GIOVANNA (GB)
PRINCE ALISTAIR GRAEME (GB)
YOUNG RICHARD JOHN SHEFFIELD (GB)
Application Number:
PCT/US2010/059433
Publication Date:
June 21, 2012
Filing Date:
December 08, 2010
Export Citation:
Assignee:
DU PONT (US)
HANG KENNETH WARREN (US)
LAUDISIO GIOVANNA (GB)
PRINCE ALISTAIR GRAEME (GB)
YOUNG RICHARD JOHN SHEFFIELD (GB)
HANG KENNETH WARREN (US)
LAUDISIO GIOVANNA (GB)
PRINCE ALISTAIR GRAEME (GB)
YOUNG RICHARD JOHN SHEFFIELD (GB)
International Classes:
H01L31/0224; H01B1/22
Domestic Patent References:
| WO2006029250A2 | 2006-03-16 |
Foreign References:
| US20050172996A1 | 2005-08-11 | |||
| US20050172998A1 | 2005-08-11 | |||
| US20090101872A1 | 2009-04-23 | |||
| EP1713092A2 | 2006-10-18 |
Other References:
HILALI ET AL: "Bow in screen-printed back-contact industrial silicon solar cells", SOLAR ENERGY MATERIALS AND SOLAR CELLS, ELSEVIER SCIENCE PUBLISHERS, AMSTERDAM, NL, vol. 91, no. 13, 5 June 2007 (2007-06-05), pages 1228 - 1233, XP022104554, ISSN: 0927-0248
SMITH D D ET AL: "REVIEW OF BACK CONTACT SILICON SOLAR CELLS FOR LOW COST APPLICATION", 16TH. E.C. PHOTOVOLTAIC SOLAR ENERGY CONFERENCE. GLASCOW, UNITED KINGDOM, MAY 1 - 5, 2000; [PROCEEDINGS OF THE INTERNATIONAL PHOTOVOLTAIC SOLAR ENERGY CONFERENCE], LONDON : JAMES & JAMES LTD, GB, vol. CONF. 16, 1 May 2000 (2000-05-01), pages 1104 - 1107, XP001138830, ISBN: 978-1-902916-18-7
SMITH D D ET AL: "REVIEW OF BACK CONTACT SILICON SOLAR CELLS FOR LOW COST APPLICATION", 16TH. E.C. PHOTOVOLTAIC SOLAR ENERGY CONFERENCE. GLASCOW, UNITED KINGDOM, MAY 1 - 5, 2000; [PROCEEDINGS OF THE INTERNATIONAL PHOTOVOLTAIC SOLAR ENERGY CONFERENCE], LONDON : JAMES & JAMES LTD, GB, vol. CONF. 16, 1 May 2000 (2000-05-01), pages 1104 - 1107, XP001138830, ISBN: 978-1-902916-18-7
Attorney, Agent or Firm:
CARTY, Sherry (Legal Patent Records Center4417 Lancaster Pik, Wilmington Delaware, US)
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