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EANS-News: PVA TePla AG
MultiCrystallizer: New System Development for the Solar Industry

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Wettenberg (euro adhoc) - (Wettenberg, June 16, 2011) - PVA TePla AG,
Wettenberg, a manufacturer of silicon crystallization systems as well as vacuum
and high-temperature systems, is now marketing a further development of the
MultiCrystallizer crystal-growing system, generation G5, for higher loads. The
product is named MultiCrystallizer VGF732Si HC.

The MultiCrystallizer is a vacuum furnace for directional solidification (based
on the vertical gradient freeze process) of multicrystalline silicon ingots for
the production of wafers for the photovoltaic industry. 

The new HC version, generation G5, uses higher crucibles (G5: 480 - 520 mm
crucible height; old standard: 420 mm) to enable greater loads of silicon up to
a maximum weight of 560 kg. 

The furnace has a unique temperature control system with a heating zone that,
thanks to its outstanding level of temperature homogeneity, ensures columnar
solidification even on the ingot exterior. This creates perfect conditions for
optimal crystallization of higher ingots and means that the same quality can be
achieved as with the previous crucible standard of 420 mm. The cell efficiencies
achieved are an average of 0.4 percentage points above the industry standard,
while the ingot yield is 75% (usable brick material as a proportion of total
ingot material). 

The higher load also means that optimal brick heights of 250 mm can be achieved
in a 480 mm crucible. This brick height makes wafer-cutting as efficient as
possible and means that the process is extremely cost-effective for customers. 

Not only that, the MultiCrystallizer VGF732Si HC is especially suited to the
mono-like process due to its independently controllable heating and cooling
zones. A stable crystallization front throughout the crystallization process
enables faults to be avoided and ensures that the mono-like structure remains
properly intact.

You can obtain further information from:
Roger Pingel
PVA TePla AG
Phone: +49(0)641/68690-151 
Roger.pingel@pvatepla.com   
www.pvatepla.com


Further inquiry note:
Dr. Gert Fisahn
Telefon: +49(0)641 68690-400
E-Mail:  gert.fisahn@pvatepla.com

end of announcement                               euro adhoc 
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company:     PVA TePla AG
             Im Westpark 10-12
             D-35435 Wettenberg
phone:       +49(0)641 68690-0
FAX:         +49(0)641 68690-800
mail:         ir@pvatepla.com
WWW:         http://www.pvatepla.com
sector:      Misc. Industrials
ISIN:        DE0007461006
indexes:     CDAX
stockmarkets: regulated dealing/prime standard: Frankfurt, free trade: Berlin,
             Hamburg, Stuttgart, Düsseldorf, Hannover, München 
language: English

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