Title:
PHOTOVOLTAIC CELL WITH POROUS SEMICONDUCTOR REGIONS FOR ANCHORING CONTACT TERMINALS, ELECTROLITIC AND ETCHING MODULES, AND RELATED PRODUCTION LINE
Document Type and Number:
WIPO Patent Application WO/2011/110682
Kind Code:
A3
Abstract:
A photovoltaic cell (100) is proposed. The photovoltaic cell includes a substrate (105; 105') of semiconductor material, and a plurality of contact terminals (Tf,Tb) each one arranged on a corresponding contact area (122) of the substrate for collecting electric charges being generated in the substrate by the light. For at least one of the contact areas, the substrate includes at least one porous semiconductor region (125) extending from the contact area into the substrate for anchoring the whole corresponding contact terminal on the substrate. In the solution according to an embodiment of the invention, each porous semiconductor region has a porosity decreasing moving away from the contact area inwards the substrate. An etching module (400) and an electrolytic module (700;700';800;800') for processing photovoltaic cells, a production line (900) for producing photovoltaic cells, and a process for producing photovoltaic cells are also proposed.
Inventors:
BALUCANI MARCO (IT)
Application Number:
PCT/EP2011/053739
Publication Date:
March 08, 2012
Filing Date:
March 11, 2011
Export Citation:
Assignee:
RISE TECHNOLOGY S R L (IT)
BALUCANI MARCO (IT)
BALUCANI MARCO (IT)
International Classes:
H01L31/18; C25D7/12; C25D17/00; C25F7/00; H01L21/285; H01L21/67; H01L31/0224
Domestic Patent References:
| WO2005076347A1 | 2005-08-18 |
Foreign References:
| US20060260932A1 | 2006-11-23 | |||
| EP1612845A2 | 2006-01-04 | |||
| US3162589A | 1964-12-22 |
Attorney, Agent or Firm:
PEZZOLI, Ennio et al. (Via Settembrini 40, Milano, IT)
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